copper tungsten

copper tungsten
显示标签为“tungsten carbide inserts”的博文。显示所有博文
显示标签为“tungsten carbide inserts”的博文。显示所有博文

2013年8月28日星期三

Tungsten scrap prices continue to safeguard stability

tungsten carbide inserts scrap prices continue to safeguard stability. Current domestic waste tungsten blade purchase price excluding tax mainstream concentrated in 170-172 yuan / kg, imported blade 180-182 yuan / kg, scrap tungsten drill 196-198 yuan / kg. Pure tungsten scrap 210-215 yuan / kg. Grinding material W ≥ 70% ,1.85-1 .95 yuan / kWh; 50% <W <70% ,1.65-1 .85 yuan / kWh; 30% <W <50% ,1.45-1 .6 yuan / kWh; 10% <W < 30% 1.05 - 1.4 yuan / kWh.Tungsten City market is still vulnerable to run, scrap tungsten sluggish market demand, the downstream waiting to see atmosphere, the overall turnover was light, the current business offer mostly remained stable, no significant price cuts will. If no further significant decline tungsten, tungsten scrap market is short-term and more will continue steady run.International market, the overseas tungsten City a steady rise. 21 evening MB Ferrotungsten Rotterdam offer 48-49 USD / kg tungsten, up 0.2 U.S. dollars; quoted in Hong Kong 53-55 USD / kg tungsten, steady; paratungstate European price remained at 410-425 U.S. dollars / metric ton, quoted in Hong Kong 433 - $ 455 / metric ton, steady.
Tungsten ore market volume was light, many businesses wait
Core Tip: tungsten scrap prices continue to firm, but exercise alone more thinly traded; molybdenum market stalemate situation slightly thick, low-cost procurement of raw materials sweaty, molybdenum and stabilize the main; sources of market tight cash resources, vanadium market more price have a larger adjustment phenomenon; scrap titanium sponge titanium and titanium market is affected by the impact of sluggish operation difficult; ferrosilicon prices steady upward, but the steel is not fully launched the tender; currently silico-manganese market is still mainly stable, offer a more stable ; high chrome market still stable, manufacturers offer no noticeable recent fluctuations.

2013年8月26日星期一

Layout is taking shape


Latest data show that crept into the big HUTANG CMN tungsten mine. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. March 2011, Xiamen Rainbow through capital increase registered capital increased to 478 million yuan from the 97.16 million yuan. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. After the capital increase CMN HUTANG tungsten mine in the big accounting for nearly 6% indirect shareholding
As China's tungsten carbide inserts industry leading enterprises, CMN special status, its layout north of Jiangxi Tungsten has coarse shape. Copper Lead Zinc Tin nickel, China Nonferrous network, a small metal, scrap metal.
Statistics show that in 2003 in order to increase their investment CMN way to get a rare earth Jiangxi Tungsten Industry Group 51% stake in the Group has a wholly-owned medium-sized tungsten mine 8; through participation in integrated water resources in northern Jiangxi repair tungsten obtained Xianglushan ore 51% stake; 2007 CMN implemented in cooperation with Guangxi Guangxi Lu Chuan Prospecting System - Bobai tungsten molybdenum exploration projects. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. 2010, CMN has control of 51% stake in Hunan Nonferrous, the realization of Yaogangxian Shizhuyuan, Xintianling other large tungsten ore controlling, controlling more than 90% of the Hunan Province of tungsten ore resources. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. In the field of carbide, CMN Holdings Carbide plant in Nanchang, Hunan Nonferrous controlled by Zhuzhou Cemented Carbide and Zigong Cemented Carbide Carbide two China's largest enterprises. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal. In addition, CMN also holds a 15.58% stake in Xiamen Tungsten, becoming its second largest shareholder. Copper Lead Zinc Tin  nickel, China Nonferrous network, a small metal, scrap metal.
Analysts estimate that CMN tungsten reserves accounted for 30% or more. Copper Lead Zinc Tin nickel, China Nonferrous network, a small metal, scrap metal.
Xiamen Rainbow, CMN so big HUTANG tungsten ore, tungsten ore Xianglushan after the coming years will be faced with another is about to rise in northern Jiangxi large tungsten mine - megaton Fuliang County, Zhu Xi tungsten mine. Copper Lead Zinc Tin nickel, China Nonferrous network, a small metal, scrap metal. Reporters learned that, Jiangxi Bureau of Geology and Mineral Exploration Zhu Creek tungsten mine, and exploration funding sources are state-owned geological exploration fund. Copper Lead Zinc Tin nickel, China Nonferrous network, a small metal, scrap metal. Zhu Xi to be further proven reserves of tungsten ore, mine mining rights or through auction to determine the development side, when the tungsten industry will inevitably put on a big scramble.

2013年8月25日星期日

radioisotopes such as radiation shields and baskets

In aviation and rocket technology, and requires that the machine parts, engines and some instruments of other sectors with high heat intensity, tungsten and other metals to melt (tantalum, niobium, molybdenum, rhenium) used as a heat resistant alloy materials. In aviation and rocket technology, and requires that the machine parts, engines and some instruments of other sectors with high heat intensity, tungsten and other metals to melt (tantalum, niobium, molybdenum, rhenium) used as a heat resistant alloy materials. Tungsten plate, molybdenum plate, tungsten rod, molybdenum rod, tungsten carbide inserts tube, molybdenum tube, tungsten crucible, molybdenum crucible and the high proportion of the contact material manufactured by powder metallurgy alloys tungsten - copper (10% to 40% copper) and tungsten - silver alloy, copper and silver both good electrical conductivity, thermal conductivity and wear resistance of tungsten. Therefore, it becomes manufacture knife switch, circuit breakers, spot welding electrodes and other working parts are very efficient contact material. Content of 90% to 95% tungsten, 1% to 6% nickel, 1% to 4% of a high proportion of copper alloy, and iron and copper (~ 5%) of the alloys used in the manufacture of the rotor gyroscope , aircraft, control the rudder counterweight, radioisotopes such as radiation shields and baskets. Tungsten plate, molybdenum plates, tungsten rods, molybdenum rods, tungsten tube, molybdenum tube, tungsten crucible, molybdenum crucible electric vacuum tungsten filament lighting materials tungsten, tungsten bands and various forging components for the tube production, radio electronics and X-ray technology. Incandescent tungsten filament is the best material and helical filaments. High temperature (2200 ~ 2500 ℃) ensure a high luminous efficiency, and small wire evaporation rate guarantee long life. Tungsten oscillating tube for manufacturing an electronic direct hot cathode and a gate, a cathode and a high voltage rectifier and a variety of electronic instruments indirectly heated cathode heaters. Do X-ray tube with a tungsten and cathode gas discharge tube and a cathode, and the radio equipment and atomic hydrogen welding torch electrode contacts. Tungsten and tungsten rod as a high temperature furnace (up to 3000 ℃) is a heater. Tungsten heater in a hydrogen atmosphere, an inert atmosphere or in vacuum work. Tungsten plate, molybdenum plate, tungsten rod, molybdenum rod, tungsten tube, molybdenum tube, tungsten crucible, molybdenum crucible

improve its strength and improve the low temperature ductility.

Molybdenum alloy, are molybdenum matrix by adding other elements consisting of non-ferrous alloys. Major alloying elements are titanium, zirconium, hafnium, tungsten carbide inserts, and rare earth elements. Titanium, zirconium, hafnium, molybdenum alloy element not only from solid solution strengthening effect, maintaining low alloy ductility, but also form a stable carbide dispersed phase, increase the tensile strength and the recrystallization temperature. Molybdenum alloy has good heat conductivity, and low coefficient of expansion at high temperature (1100 ~ 1650 ℃) has a high strength, easy processing than tungsten. Can be used as a gate and anode tube, electric light support material, as well as for the production of die-casting and extrusion dies, spacecraft parts. Because molybdenum alloy welding low temperature brittleness and fragility, and the high-temperature oxidation, so their development is restricted. Industrial production of molybdenum alloys, molybdenum and titanium zirconium, molybdenum, tungsten and molybdenum, rare earth alloy, used more often is the first class. Molybdenum alloy is the main way to strengthen the solid solution strengthening, precipitation strengthening and work hardening. Can be obtained through the plastic processing molybdenum alloy sheet, strip, foil, tubes, rods, wire and profiles, but also improve its strength and improve the low temperature ductility.
(Figure) molybdenum alloy head (press tool)
Molybdenum-based alloy by adding other elements. The refractory metals, molybdenum and alloys have good thermal conductivity, electrical conductivity and a low coefficient of expansion (similar glass with electron tubes), at high temperature (1100 ~ 1650 ℃) has a high strength, compared with tungsten, easy processing, and thus in the tube (grid and anode), electric light source (supporting material), metal processing tools (die casting and extrusion dies and piercing plug) manufacturing and aerospace industries in the applications. Molybdenum molten glass etching ability, it does not contaminate the glass oxides. Since 1943, molybdenum material has been used in the glass industry for heating electrodes. Mo-30W alloy has excellent anti-corrosion properties of molten zinc, has been successfully applied zinc industry. Molybdenum is also used in the manufacture of sulfuric acid in the production of heat exchangers and valves and other components.

2013年8月23日星期五

Status of tungsten and molybdenum vanadium industry development direction and 12 five analysis


2011 China International tungsten carbide inserts Molybdenum Vanadium Development Forum, China Nonferrous Metals Industry Association vice president Mr. Chinese military literature tungsten and molybdenum vanadium industry status and development direction of Twelfth Five-made reports. At the meeting, he noted that in 2010 the price of tungsten strong performance over 2008 pre-crisis levels. Tungsten concentrate prices throughout the year from 70,000 yuan / ton rose to 108,000 yuan / ton, up 54 percent year on year. Primary smelting products APT Price: from 107,000 yuan / ton rose to 169,000 yuan / ton. Total annual production of tungsten concentrates produced 115,000 tons (equivalent to 65% WO3), equivalent to the amount of 59,000 tons of metal, up 16%, accounting for over 80% of the world total. Tungsten exports recovered significantly, the annual volume of total exports of 22,000 tons of metal, an increase of 74%, back to the 2008's 92%. Chinese molybdenum concentrate production of about 80,000 tons, an increase of 9.6%; continued to hold the first in the world, accounting for 37.4%. In 2010, Chinese exports of 19,500 tons of molybdenum, an increase of 1.35%, molybdenum export volume of 1.7 million tons, down 51.3%, net imports of 2,500 tons. Molybdenum products export structure to achieve a net importer to a net exporter of changes. Vanadium prices rebounded in 2010, but the overall oversupply, or not. China is still the world's largest vanadium producer, in 2010 51.6% of the total world exports in 2010, China exported about 15,000 tons of vanadium products (equivalent V2O5), doubling year on year. Exported 7,045 tons of vanadium pentoxide, an increase of 64%; vanadium iron about 6,000 tons, an increase of 140%; vanadium nitrogen alloy 217 tons, an increase of 146% of domestic consumption in 2010, consumption of about 41,000 tons of vanadium (equivalent to V2O5), an increase of 13%. Vanadium steel industry is a major consumer areas, accounting for about 90% of total consumption of vanadium. Expects the global consumption of tungsten forecast over the next five years the average annual growth of 4% of tungsten demand forecast over the next five years the average annual growth of 6%. Finally, he summed up the tungsten-molybdenum vanadium second five directions: a: rational development and utilization of domestic resources, to prevent excessive consumption of resources; 2: Strengthening rare new materials research and development, accelerate product upgrading; 3: strict control of low-level redundant construction blindly, accelerated growth patterns; 4: to accelerate structural readjustment, promote strategic integration and restructuring, increased industrial concentration; 5: to promote energy conservation and reduce energy consumption; 6: Strengthen integrated resource recycling, the development of recycling economy and green economy; 7: active use of foreign resources, and enhance the resources and support capabilities.

2013年8月21日星期三

Many businesses wait and see APT, tungsten carbide Buyer caution

Currently paratungstate (APT) factory shipments in general, manufacturers are required by the financial constraints affecting cash transactions, the market traded around low levels, the mainstream market quotations for 21.8-22.2 yuan / ton, but the actual transaction basically in the 200,000 yuan / ton the following, and many of the 218,000 yuan / ton.
It is understood that some previous shutdowns APT manufacturer has now gradually resume production, but demand is low, prices upside down, many manufacturers are still temporarily outside offer, APT many businesses see attitude.
Our analysis that the continuing strength of tungsten carbide inserts raw material market, making the APT and other smelters pressure surge, sad day, mainly because of upstream raw materials firm makes high production costs, but the downstream end demand has continued to slump, do not sell on price, subject to the downstream flank, on the demand did not improve when the APT price is hard to a big breakthrough.
Despite the large price increases alloy alloy enterprises, small and medium enterprises alloy prices stabilize, but the downstream consumer business cautious replenishment, demand remained weak, making the raw material of tungsten carbide (WC) manufacturers offer a basic steady, according to research to understand the 325-330 yuan / kg, sold more in the 328 yuan / kg.

Tungsten Tungsten City overall steady weakening demand for light products and other raw materials

 Core Tip: Recently tungsten market overall showed a steady weakening trend, tungsten, APT and other raw products due to demand for light, tungsten carbide powder prices continue to stabilize, tungsten scrap material price highs slightly down; molybdenum price is difficult to continue to rise, market transactions slowed down.
Tungsten market: Recently tungsten City overall trend showed a steady weakening, tungsten carbide inserts, APT and other raw products due to demand for light, businesses own stress and other factors, prices fell, and the market transactions scarce, cash payment. Tungsten carbide powder prices continue to stabilize; scrap tungsten material price fell slightly high, but most businesses offer still strong.
Molybdenum market: the outer disk Molybdenum offer a slight fall situation, end demand is still weak, businesses operating enthusiasm from the previous month decreased. Domestic molybdenum market market trend slightly calm, more difficult product prices continue to rise, the market turnover situation has slowed down. Merchant cash inside too few resources, no cheap Foreign goods to go plans. Short-term market is expected to steady run-based.

the demand side have yet to see significant improvement

Tungsten mining is one of the company's main source of profit, the company has a line of Luo Ning of pit tungsten mine and Yulu Mining stable profit contribution for the company, Yang Chu newly acquired mining has been put into production, is expected to Yang Chu mining capacity continuous release In the next 2-3 years will become a major profit growth point. Yang Chu Mining is expected to reach capacity in 2015, put into operation, Yang Chu tungsten carbide inserts mine with an annual output of about 2,500 tons of tungsten concentrate, is expected to net profit of 87.11 million yuan, 52.26 million yuan profit contribution of equityJiujiang Golden Egret Carbide project is expected to begin in 2014 contribute to the performanceCarbide is the focus of the company's development, but also the strong profitability of a business segment. The company's current production of carbide Xiamen Golden Egret stable earnings, gross margin was stable at 25% -30%, nearly three years net profit of about 1.9 billion yuan. Jiujiang Carbide project is expected to put into operation at the end of 13 years, in 2014 began to contribute to the performance, is expected to put into net profit of about 130 million yuan, 91 million yuan profit contribution of equity.Rare earth permanent magnet profit growth will become another pole3000 tons NdFeB magnets items. Changting Jinlong currently has 3,000 tons of rareearth NdFeB magnet production capacity in 2011, the project started construction in Fujian Changting, as of June 2012 have been completed and put into production, the ongoing production debugging. Although the project put into production, but did not contribute to effective if normal production and operation of the project, the estimated annual contribution to the net profit of 100 billion yuan.Optimistic about the price of tungsten and rare earth pricesOrderly supply of tungsten resources, mainly lies in several large tungsten industry companies, the demand side have yet to see significant improvement. It is expected that as the economy improves, the downstream carbide commissioning of the project, will further boost the demand for tungsten metal. The Minmetals acquisition of other companies in the market price of tungsten concentrates short-term stimulus starts up.Rare earth prices are expected to rise bottomsRare earth prices experienced in 2011 after skyrocketing, from the third quarter of 2011 began to enter the down channel, the downward trend continued throughout the year 2012, to May 2013, the basic price of rare earth rare earth prices close to 2011 before skyrocketing price level. Analysts believe that rare earth prices is to build long-term bottom, but there have been recent signs of improvement in demand, companies operating rate NdFeB rare earth prices bottoming help enhance recovery

2013年8月20日星期二

will first consider what is."

If in 2011 the stock market last longer some more projects abroad early on.  Now the price, foreign to continue to overweight (capacity), or will first consider what is."
"If in 2011 the stock market last longer some more projects abroad early on." The expert said, "Now the price abroad to continue to overweight (capacity), or will first consider what is."
Since last year, the global economic slowdown, also downstream rare earth industry downturn, coupled with soaring prices of rare earth in 2011 really made application of rare earth enterprises to eat boring boxing, rare earth prices has basically come down to the level of the initial price.
"June 2011 is the highest point of rare-earth prices, the profit level reached the highest value product now withering profit margins, the current price level for Chinese enterprises, there is a certain profit margin, for foreign rare earth project is difficult for the Relay. "Zhang said some foreign in the exploration phase of the project most difficult, a lot of projects to China looking for partners.
Zhang analysis, due to oversupply of light rare earth products, especially products of lanthanum and cerium, in the current price trend, the large-scale expansion will further squeeze profit margins.
Cost and price of course is to determine the main factors of production, but experts have warned that the rare earth industry, and foreign difference is that Chinese enterprises is not enough emphasis on sustainable development.
"Everybody says tungsten carbide inserts some foreign ore before discontinued because of cost competition, but China, environmental costs far higher than China, etc. But I think, if not profitable, not mine so many years ago, after all, is not environmentally friendly from 2002 (Note: Mans Pass mine shut down in 2002) began. "he said.
"Since the (Chinese) have cheap rare earth, why do I still mined? Keep for future re-sell it more expensive!" He said, "like rare earths such resources, will certainly keep price increases because it is not the same and iron , are non-renewable, recycling is only part not 100% recycled. "
Policy is difficult to break
The scope of the 12th Man
Continue to join the ranks of rare earth industry, the company will intensify competition in the market worldwide, "the world's rare earth price war is inevitable."
June 2012, the State Council Information Office published entitled "China's rare earth conditions and policies," the White Paper: "23% of China's rare earth resources to bear more than 90% of the world market supply." Meaning behind this statement is that China at the same time in the development of rare earth industry, the need to protect resources and the environment to the position of the premise.
When the project started abroad increased supply, obviously, the entrepreneur himself.

2013年8月19日星期一

Cerium Cerium tungsten rod tungsten needle basics


Pure tungsten carbide inserts electrode W1 W ≥ 99.92 SiO2 ≤ 0.03 Fe2O3Al2 ≤ 0.03 Mo ≤ 0.01 CaO thorium tungsten WTH-7 W margin other impurities is not more than the total mass fraction of 0.15% cerium tungsten WCe-20 W margin CeO1.8- 2.2 SiO2 ≤ 0.06 Fe2O3AI2O3 ≤ 0.02 Mo ≤ 0.01 CaO ≤ 0.01 cerium tungsten low electron work function, high chemical stability, allowing current density, non-radioactive, are now widely used in an electrode of pure tungsten melting and boiling points high, not easy to melt volatile, burning, cutting-edge, less pollution, but the electron emission is poor, is not conducive to the stability of arc burning. Thorium tungsten electron emission capability, allowing high current density arc burning more stable, but with a certain radioactive elements thorium, promote the application be affected. Zirconium tungsten electrode on the need to prevent contamination of the base metal under special conditions, you can use this tungsten. The hemispherical tip of the electrode and easy to maintain, for AC welding. 0001 55 916.807 rod .. Such electrodes are containing tungsten carbide, boron, manganese and high abrasive wear of welding electrodes, AC-DC dual-use, with good performance Abrasive cerium tungsten ingredients in a pure tungsten mass fraction of 1.8% -2.2% of ceria and impurities ≤ 0.1% of the electrode . The advantage is cerium tungsten X-ray dose and antioxidant properties than thorium tungsten have been greatly improved; electronic thorium tungsten electrode work function than about 10%, the arc easier and better arc stability. Also cerium tungsten chemical stability, cathode spot is small, low pressure drop, burning and less, so is the most widely used TIG welding a tungsten electrode. Commonly used tungsten chemical composition and grade of pure tungsten W1 W ≥ 99.92 SiO2 ≤ 0.03 Fe2O3Al2 ≤ 0.03 Mo ≤ 0.01 CaO thorium tungsten WTH-7 W margin other impurities is not more than the total mass fraction of 0.15% cerium tungsten WCe- 20 W margin CeO1.8-2.2 SiO2 ≤ 0.06 Fe2O3AI2O3 ≤ 0.02 Mo ≤ 0.01 CaO ≤ 0.01 cerium tungsten low electron work function, high chemical stability, allowing current density, non-radioactive, is now widely used as a electrodes of pure tungsten high melting and boiling points, easy to melt evaporation, burning, cutting-edge, less pollution, but the electron emission is poor, is not conducive to the stability of arc burning. Thorium tungsten electron emission capability, allowing high current density arc burning more stable, but with a certain radioactive elements thorium, promote the application be affected. Zirconium tungsten electrode on the need to prevent contamination of the base metal under special conditions, you can use this tungsten. The hemispherical tip of the electrode and easy to maintain, for AC welding.

tungsten carbide smooth operation of the market

The producers did not have inventory, orders are scheduled to mid-September. "Old customers monthly purchase volume remained unchanged, demand is stable," said the producer said. He said last week they 132,000 yuan / ton price purchase of 40 tons APT, APT Buy now somewhat difficult. Upward trend in raw material prices, the next two weeks tungsten carbide powder prices will not fall. Analysis and forecasting tungsten prices remained stable, , tungsten carbide smooth operation of the market, trading volume has increased, it is expected this week, the market is expected to remain strong. Tungsten prices firm, tungsten carbide inserts manufacturers optimistic and unwilling to sell goods. They constitute support for tungsten prices, market demand also improved, plus optimistic expectations of market participants, so we still think the short term the probability of large tungsten prices rose steadily.

Tungsten carbide (WC) is the main raw material for the production of carbide, chemical formula WC. All known as Wolfram Carbide, also translated as tungsten carbide black hexagonal crystals with metallic luster, hardness of diamond is similar to electricity, a good conductor of heat. Melting point 2870 ℃, boiling point 6000 ℃, relative density of 15.63 (18 ℃). Tungsten does not dissolve in water, hydrochloric acid and sulfuric acid, soluble in nitric acid - hydrofluoric acid mixture. Pure tungsten fragile, if mixed with a small amount of titanium, cobalt and other metals, can be reduced brittleness. As tungsten carbide steel cutting tool, often by adding titanium carbide, tantalum or mixtures thereof, to improve the antiknock. Tungsten carbide is chemically stable.

Meanwhile, tungsten carbide export prices firm at 35-36 U.S. dollars / kg, the spot market is very active, overseas buyers inquiry procurement initiative, the export price is also expected to stabilize upward.

Xingguo County and northern Materials Science and Engineering Research Institute

A total investment of 1.5 billion yuan tungsten carbide inserts powder and tungsten deep processing project located in Xingguo County
Public letter from Ganzhou Committee was informed that recently, Xingguo County and northern Materials Science and Engineering Research Institute, Jiangxi Grand View Mining Co., Ltd., Zhuhai New Materials Co., Murray believed the construction of tungsten powder and tungsten products deep processing project signing ceremony.
It is understood that the total investment of 1.5 billion yuan, plans to run in three phases: Phase relying Grand Jiangxi Tungsten Mining Co. existing resources and building formed annual production 3,000 tons and 3,000 tons of tungsten powder, tungsten carbide powder capacity, carry tungsten products research and development; second phase of construction tungsten products production lines, as well as molybdenum carbide products launched, precious metals and other mineral resources in the research and development of deep processing products; third phase of construction and molybdenum carbide products, precious metals, etc. deep processing of mineral resources production line. After completion, the annual output value will reach 30 billion yuan, 100 million yuan in revenue.

2013年8月16日星期五

price increases are still feeling some businesses


Current tungsten market as a whole held steady, some mining companies will increase shipping, bullish atmosphere still dominant; APT aspects expensive subside, many businesses choose to watch, tungsten carbide inserts carbide powder by the end demand constraints temporarily thinly traded, tungsten, iron-70 base lowest price at 200,000 yuan / ton, the market spot supply, price increases are still feeling some businesses, scrap tungsten steel stop rising stabilize in the near term remain strong trend.
Last week, purchasing and storage enterprises continue to push up the price of tungsten, tungsten market prices again rose 4.1 percent, 65-degree black fine tungsten prices rose 14.3 to 145,000 yuan / ton, scheelite market from 14.1 to 143,000 yuan / ton, compared with the previous week rose by 3,000 yuan per ton. Since the beginning of 65 degrees wolframite prices have risen by 22%.
Downstream, as the international price indices in the domestic APT (APT) last weekend price 213,000 yuan / ton, ring up more than 04,000 yuan / ton; sodium tungstate price 144,000 yuan / ton, ring up more than 07,000 yuan / ton ; tungsten powder price of 327.5 yuan / kg, and ring up more than 5 yuan / kg.
Industry analysts said the biggest change in June tungsten City has two: one, the downstream product of tungsten eletrod sudden rapid follow up. Previously, that after the Spring Festival this year, tungsten small step up fast, but because of a bad deal tungsten downstream product price increases difficult, resulting in price upside down; two, CMN early June will offer a one-time increase of 20,000 yuan / ton, to wolframite 155,000 yuan / ton, or 14.8%, much higher than Ganzhou Tungsten Industry Association in June 2000 yuan per ton, up offer. "CMN one up so much to influence the market bullish atmosphere, led lower prices."
Tungsten is the greatest force behind the current round of price increases to the market in large quantities CMN acquisition Wu Jing flour, the price of tungsten and drag from the bottom. CMN is the largest supplier of tungsten ore, production accounting for about 20-30% of total. In addition, the market speculation that the limited resources coupled with all aspects of national policy restrictions, such as mining permits, environmental protection and other policies, the market will support the formation of tungsten, tungsten last year, fell below the cost situation is not normal. However, the current round of tungsten concentrate prices, lower market acceptance is not high. Market turnover is small, many companies are more cautious purchase some stock and order of business is functioning, but it basically did not cover their short positions, watching the market atmosphere.

made of tungsten wire drawing process

The earliest for the production of incandescent tungsten filament. 1909 U.S. Kuli Ji (WDCoolidge) using tungsten powder pressing, remelting, swaging, made of tungsten wire drawing process, from tungsten production has been growing rapidly. 1913 Langmuir (I.Langmuir) and Rogers (W.Rogers) found thorium tungsten wire (also known as thorium tungsten filament) electron emission performance than pure tungsten, start using thorium tungsten wire, is still widely used. 1922 developed with excellent anti-sagging properties of tungsten wire (called doping does not sag tungsten or tungsten), which is the study of tungsten significant progress. Does not sag tungsten filament is excellent and widely used cathode material. 50 to 60 years, for tungsten alloy conducted extensive exploration and research, hopes to develop in 1930 ~ 2760 ℃ working tungsten alloy, used for making high-temperature aerospace industry components. Tungsten-rhenium alloy which more research. tungsten carbide inserts smelting and processing forming technology also carried out research, using consumable arc and electron beam melting tungsten ingot obtained and processed by extrusion and plastic products made from certain; but smelt ingots coarse grains, poor plasticity , processing difficulties, finished product rate, thereby melting - plastic processing technology does not become the main means of production. In addition to chemical vapor deposition (CVD method), and plasma spraying can produce very few products, made of tungsten powder metallurgy products are still the primary means.In the 1950s, China has been able to produce tungsten material. 1960 tungsten smelting, metallurgy and processing carried out research, is now able to produce plate, sheet, foil, bar, pipe, wire and other shaped pieces. Tungsten materials using high temperature, only using the solid solution strengthening methods to improve the high temperature strength of tungsten little effect. However, in the solution based on the further strengthening dispersion (or precipitation) hardening, to greatly improve the high temperature strength, and precipitated with ThO2 HfC particle dispersion strengthening effect is best. At 1900 ℃ or so W-Hf-C system and the W-ThO2 alloys have a high-temperature strength and creep strength. Used below the recrystallization temperature of the tungsten alloy, taking temperature hardening methods, to produce strain hardening is an effective way to strengthen. Such as fine tungsten wire with high tensile strength, deformation rate of 99.999% total processing a diameter of 0.015 mm thin tungsten wire, room temperature tensile strength of up to 438 kg / mm; in refractory metals, tungsten and tungsten alloy plastic - brittle transition temperature maximum. Sintering and melting of the plastic material of polycrystalline tungsten - brittle transition temperature is about 150 ~ 450 ℃ between, resulting in difficulties in processing and use, and the single crystal of tungsten is below room temperature. Tungsten material in the interstitial impurities, microstructure and alloy elements, and plastic processing and surface state, the plastic timber tungsten - brittle transition temperature has a significant impact.

2013年8月14日星期三

Molybdenum plate, etc. The main purpose of rare metals

 Ji Rui rare limited liability company Reads Tungsten plate, molybdenum plates, tungsten rods, molybdenum rods, tungsten carbide inserts tube, molybdenum tube, tungsten crucible, molybdenum crucibles and other rare metals products, they are about the world molybdenum consumption 6% of the total consumption. Molybdenum melting point, boiling point, high temperature strength, anti-friction, corrosion resistance, thermal conductivity, thermal expansion coefficient, good hardenability, etc., to make it in the aerospace, weapons, electronics, chemical and other fields widely used.
Recycling satellite re-entry, it must overcome the hot air scour. Therefore able to withstand vibration, shock, vacuum, radiation and temperature environment of alternating molybdenum-based alloys used to produce stable satellite recovery tank dress skinning. TZM Molybdenum tube alloy is also used to make space rocket or space shuttle solid rocket motor nozzle, rocket nose cones, the leading edge of aircraft, rudder, heat shield, honeycomb structure.
Not only with the weapons industry molybdenum steel for tank armor, but also use TZM and TZC molybdenum alloy corrosion resistance characteristics, overall turbine impeller as cruise missiles, also used as a high-temperature gas-cooled reactor difficult helium atom turbine impeller.
The electronics industry often use molybdenum melting point, low expansion coefficient and a low rate of secondary electron emission, it is widely used for various tube gate, anode and high electrical power source such as lead. Present study suggests that, to add a small amount of molybdenum silicon, aluminum, potassium allow it to the secondary crystallization temperature is higher than that of pure molybdenum, 700 ℃, up to 1800 ~ 1900 ℃, widely used as a heating element, heat screens.

2013年8月13日星期二

Conservation and dental diseases

Introduction of laser cleaning technology and its application on the tire industry
Conservation and dental diseases, often need to use clean technologies. For example: industrial products in the plating, phosphating, painting, welding, packaging and integrated circuit assembly, under the procedures in order to ensure the quality of the workpiece, on the surface of the product must be removed grease, dust, rust or residual solvent, sticky Results like dirt. Due to environmental pollution and poor protection and other reasons, a lot of artifacts and works of art are gradually being corroded and defaced, to restore the old appearance, the need for cultural surface dirt and rust cleaning. Traditional cleaning methods include mechanical cleaning, chemical cleaning and ultrasonic cleaning, mechanical cleaning method is by scraping, rubbing, brushing, sand blasting and other mechanical means to remove the surface dirt; wet chemical cleaning method is the use of organic cleaning agent, by spraying, pouring, immersion or high frequency vibration and other measures to remove surface fixtures industry ultrasonic cleaning method is to be processed parts into the cleaning agent, the use of ultrasonic vibrations generated effects to remove dirt. Currently these three cleaning methods in our cleaning market still dominated, but in environmental protection and precision requirements under its application has been greatly restricted.Molybdenum tube cleaning method can not meet the high cleanliness cleaning requirements, easy to damage the workpiece surface to be cleaned and the chemical cleaning method is easy to cause environmental pollution, to obtain the cleanliness is limited, especially when complex scale components, use a variety of cleaning agents must be repeated Cleaning it possible to meet the requirements of surface cleanliness extinction. Ultrasonic cleaning method, while the cleaning effect is good, but on the sub-micron particle pollution cleaning powerless, cleaning tank size limits the processing parts of the scope and complexity, and dry after cleaning the workpiece is also a major problem. In recent years, as people's awareness of environmental protection, to the worldwide cleaning industry has brought great challenges, a variety of environmentally clean tungsten carbide inserts have emerged, laser cleaning technology is one of them. The so-called laser cleaning technology is the use of high-energy laser beam surface, the surface of dirt, rust or coating occurs instantaneously evaporate or peel, high effective way to remove the object surface cleaner attachments or surface coating, so as to achieve a clean process . It is based on laser-matter interaction effect of a new technology with the traditional mechanical cleaning, chemical corrosion cleaning, washing liquid solid strong impact, high-frequency ultrasonic cleaning and other traditional cleaning methods, there are obvious advantages. It is efficient, fast, low cost, the substrate generates heat load and mechanical load is small, clean non-injury; recyclable waste, no environmental pollutants safe and reliable, without prejudice to the operating personnel can remove a variety of different health certificates thicknesses and different component coating layers easily automated cleaning process control to achieve long-distance remote cleaning

2013年8月12日星期一

Molybdenum alloy titanium welding head Haba hot head hot head HOT BAR knife cable welding head

Welding head, also called HOT BAR head, pulsed hot soldering head \ hot heads, hot welding head, hot welding head, the product is used in pulse welding machine, welding heater is pulsed through thermocouple tungsten carbide inserts pulse current heating, the joint is located in the close contact state, and there is no heat effect on the surrounding devices.
Mainly used for welding thin coaxial I-PEX, FPC, FFC and PCB soldering, LCD, and the ACF of TCP connections, HDMI, M INI USB connector such as welding, Teflon wire directly connected to the terminals, plasticity plastic heat bonding, etc. The use of the welding Weld phenomenon does not occur, it is possible to achieve a multi-point welding, you can not take account of the operator skills to ensure the welding quality. Also, the temperature can be real in the present, to ensure that required high precision welding end products.
Our company specializes in the production soldering head, pulse welding nozzle, pulse hot head, pressure welding tip, touch welding tip, hot tip, AVIO pressure welding head, wire welding head, SMD welding head, hot exhaust wire welding head, TC hot welding head, titanium hot head, power inductors welding head, micro welding head, Haba head, hyperbaric welding head.
My company can achieve a variety of difficult shaped, precision, common parts and components.
Our company produces micro-welding electrode (pulse hot soldering head). Used in Japan AVIO Company / Malaysia, USA, Germany and other vendors pulse hot soldering machines, widely used in high / low frequency winding inductance welding (SMD), welding cables, by the majority of users, fully meet the production requirements, comparable with the imported products.

2013年8月9日星期五

Has been widely used in single-crystal furnace

Quality molybdenum draft tube, more than 99.97% purity, high temperature above 1700 °Description: Molybdenum draft tube, also known as Mo heat shield, the effect has been raised on the role of pulling. Has been widely used in single-crystal furnace Jirui draft tube through the production of Molybdenum tube, molybdenum using high quality raw materials, more than 99.97% purity, high temperature up to 170
Molybdenum draft tube, also known as Mo heat shield, the effect has been raised on the role of pulling.
Has been widely used in single-crystal furnace
Jirui draft tube through the production of molybdenum, molybdenum using high-quality raw materials, more than 99.97% purity, high temperature of 1700 ° -1800 °.
Main specifications: 16 inch, 18 inch, 22 inch, can also be customized according to customer requirements any other size.
Ji Rui, power and successMolybdenum seed chuck, chuck aka molybdenum. Is widely used in the manufacture of single crystal furnace equipment manufacturing.
Jirui purity of 99.7% tungsten carbide inserts use of high quality molybdenum raw materials, combined with its superb production process to ensure that every product produced stable performance, reliable quality.
Our company now has a number of domestic photovoltaic enterprises to establish a cooperative relationship.
Ji Rui, power and success

Supply of tungsten products tungsten rod tungsten tube tungsten sheet

 Founded in 2002. Located in China Titanium Valley - Baoji. Is specialized in rare precious refractory metal materials production, processing and sales of high-tech enterprises.Factory has a group of highly qualified technical team and a set of advanced production equipment, production, processing rare metal materials and high temperature refractory metals products deep processing capacity, mainly in the high-temperature metal processing products for leading industries, vacuum furnace , heat shields and other high temperature equipment manufacturing, renovation, design, molybdenum plating, electronic and electrical components product development, tungsten carbide inserts, molybdenum plates, sheets and alloys, TZM production of new materials such as tungsten, molybdenum, tantalum, niobium, zirconium, titanium nickel bars, rods, wire, rods, tubes, rings and other special parts of the processing. In technology and production processes, product quality and new product development have reached domestic leading level.We are willing to old and new friends at home and abroad to seek cooperation and common development, warmly welcome you to visit, before our guest!Our business philosophy: integrity, pragmatic, innovation and excellence.
Our quality policy: The careful processing, production safety, to create the best Dayang brand. Controlled process, improvement and innovation, the biggest meet customer needs.

2013年8月8日星期四

Purpose

This product is mainly used for coating machine consumable materials, this tungsten rod tungsten content is high. Tungsten carbide coating device through hard metal rod with a stun way into the metal crystal particles dispersed in the metal surface and penetrate into the covering molybdenum plating organization combined with the underlying metal will not fall off. Either low, medium, high carbon steel, SUS, SUH, SKS, SKH, ASP, etc. can handle any steel surface hardness up to HRC80 degrees, so that the workpiece wear and corrosion resistance and service life increases
Purpose:
   Surface coating infiltration: in all types of mold, tool cutting edge parts and mechanical parts wear surface for tools with carbide rods were coated electrodes, infiltration, get high wear resistance surface, extending molds, 1-3 times the tool life.
Size Fix: Improved surface after thickening 1-3um, can be used for dies, measuring tools and other mechanical parts like bearings trace repair.
Striae functions: strengthening the electrode in the liquid medium impact point of the metal surface to form a random spark, the spark can be formed by a variety of striae weak to strong effect.IG tungsten carbide inserts needle is our cutting-edge R & D and manufacturing ← → Look for cutting-edge brand [Beware of fake brand] thorium tungsten welding cerium tungsten electrode in a pure tungsten ingredients mass fraction of 1.8% -2.2% cerium oxide and impurities ≤ 0.1% of the electrode. The advantage is cerium tungsten X-ray dose and antioxidant properties than thorium tungsten have been greatly improved; electronic thorium tungsten electrode work function than about 10%, the arc easier and better arc stability. Also cerium tungsten chemical stability, cathode spot is small, low pressure drop, burning and less, so is the most widely used TIG welding a tungsten electrode.