Molybdenum bars high thermal stability

Kekai Molybdenum bars high thermal stability , heat flux density can be usedHigh and local overheating of the circulating water system .Security: sodium molybdenum boat , but low toxicity compounds. molybdenum bolts poisoning can cause joint pain Cause low blood pressure and blood pressure fluctuations , neurological disorders, metabolic processes obstacles.

The three parties will benefit

The rise in northern Jiangxi Tungsten wire Industry, Xiamen Tungsten, CMN, Liu Ping is typical beneficiaries, CMN and Liu Dian Ping Wu Tong common control with big tungsten and tungsten mine incense, Xiamen Tungsten will get raw support and take in Jiujiang cast a huge amount of money to complete the tungsten industry chain layout
Xiamen Rainbow holds a 30% equity interest in Jiangxi Giant. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Xiamen, Fujian Metallurgical Rainbow actual control (holding) company is also a controlling shareholder of Xiamen Tungsten, namely Xiamen Rainbow and Xiamen Tungsten is a sister unit. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. In addition, the same height Xiamen Tungsten Chairman Liu Hong, chairman of Xiamen three, also chairman of Jiangxi Giant. Copper Lead Zinc Tin CNMN.COM.CN nickel,
It is reported that large HUTANG tungsten priority will be in the same price sold to Xiamen Tungsten. Copper Lead Zinc Tin CNMN.COM.CN nickel,
Xiamen Tungsten Jiujiang Mandela has tungsten ore. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. March 2013, Xiamen Tungsten Rainbow acquired from Xiamen Tungsten duchang Jinding 60% stake in the company. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. The company controls the Yang Chu tungsten mine resources of 96,000 tons, has been building formed a 1.485 million tons / year of mining capacity and production at the end of March this year, the mine is put into production with an annual output of 2,500 tons of tungsten concentrates. Copper Lead small metal, scrap metal.
A tungsten industry veteran told reporters, Xiamen, Fujian Rainbow equivalent metallurgical (Holdings) Company under a capital operation platform, past Xiamen Rainbow's assets and duchang Jinding tungsten tungsten and molybdenum companies are sold to Xiamen Tungsten, or does not rule out future similar operations. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal.
Backed by many large tungsten mine in northern Jiangxi backdrop, in April 2011, Xiamen Tungsten and CMN, Xiamen Rainbow and Jiujiang city, Xiushui county government signed a "carbide project cooperation agreement." Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Xiamen Tungsten established a joint venture with CMN Jiujiang Golden Egret Carbide Co., which invested 280 million yuan Xiamen Tungsten, accounting for 70% of the shares. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Jiujiang Carbide project a construction scale of 3,000 tons of tungsten powder, 2,000 tons carbide. Copper Lead Zinc Tin CNMN.COM.CN nickel, small metal, scrap metal.
Wu Jing powder production by 1.4 tons of tungsten powder 1 t count, one needs 4200 tons Wu Jing powder. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Du Chang Yang Chu tungsten mine to add some outsourced basic raw materials to meet its needs. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal.
Thus, the formation of Fujian Xiamen Tungsten Tungsten Plate Part ninghua OK Luo tungsten upstream and downstream industry chain, Henan Yulu Mining and downstream industry chain and downstream industry chain in Jiujiang, Jiangxi. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Among them, rather be OK Luo pit tungsten mine has reserves of 295,000 tons of tungsten (tungsten ore in the country has proven ranked third), so far mine daily processing capacity has reached 825,000 tons / year. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network, a small metal, scrap metal. Yulu Mining by the Xiamen Tungsten Molybdenum Group established a joint venture with Luoyang, Luoyang Molybdenum Molybdenum is responsible for handling tailings after. Copper Lead Zinc Tin CNMN.COM.CN nickel, China Nonferrous network small metal, scrap metal.

Tungsten wire rope

Material: W1, WAl

  Purity: W ≥ 99.95%

Application: monocrystalline furnaces Accessories

Structure: 19 * 74 * 19 * 7

Specifications:? 2.5mm * L? 2.2mm? 2.0mm * L? 1.8mm * L

? 2.5 off load (N): 6700.00 temperature load (N): 2820.00

? 2.0 off load (N): 4010.20 temperature load (N): 1800.00

? 1.8 off load (N): 3700.00 temperature load (N): 1570.00

Main Products:

Tungsten wire wire, tungsten crucible, tungsten target, tungsten boat, tungsten plate, tungsten, tungsten sheet, tungsten rod, tungsten block, tungsten foil, tungsten wire, tungsten parts, tungsten wire cutter,

Molybdenum crucible, molybdenum target, molybdenum boat, molybdenum plate, molybdenum, molybdenum sheet, molybdenum rod, molybdenum block, molybdenum foil, molybdenum seed chuck, molybdenum heat shield, molybdenum wire, molybdenum gaskets, molybdenum electrode, molybdenum parts, molybdenum round, molybdenum ingot, molybdenum hammer, molybdenum ring, molybdenum belt, molybdenum grain, polished molybdenum plate

High molybdenum rod (lanthanum molybdenum alloy rods), high temperature molybdenum plate (lanthanum molybdenum alloy plate), high temperature molybdenum (Mo La alloy film)

TZM plate, TZM sheet, TZM rods, tungsten copper alloy

Tungsten copper specifications are as follows:

  Tungsten copper rod:
      1): Tungsten wire copper spot diameter 2.0mm-20.0mm
      2): Tungsten copper special customer specifications can order / cut.
      3): tungsten copper rod tolerances according to customer requirements strictly enforced.
      4): tungsten copper rod unit price sold by the piece.
      Sheet:
      1): Thickness 2.0mm from stock
      2): width / length of standard size,
      For special specifications can be customized order / cut.
      3): tungsten copper plate price calculated based material to KG. 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 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

Tungsten concentrate prices fell slightly more than watching the buyers and sellers

Tungsten wire market prices fell slightly today, buyers and sellers wait and see mentality darker, closing market quiet. As far as we know, 65 degrees wolframite kind ton tax mainstream price is 14.1-14.4 yuan / ton, metal t does not offer tax is 1.86-1.9 yuan / kWh, and the actual turnover of mostly cash. 60 degrees above the hair wolframite ore price excluding tax of 1.83 yuan / degrees, 60 degrees above the gross scheelite ore price excluding tax of 1.81 yuan / kWh.
We analyze the main reasons for the decline in the price of tungsten concentrates are: First, the downstream tungsten smelter home to the tungsten demand continues to slump; Second, businesses are cash-strapped, cash transactions are required to pay the lowest price natural than promissory 1000-2000 yuan / ton, and eager to cash in when the price is also pressure point; Third, no large enterprise Minmetals announced a new acquisition plans; fourth is generally weak overseas demand for tungsten City. We expect the overall market this week, the city presents tungsten steady weakening trend, demand is difficult to have a big breakthrough.

Tungsten is a scarce and non-renewable resources

China Tungsten wire Industry Association president Zhou Juqiu 10, 2011 in Beijing, said that at present, China tungsten products import and export trade structure has changed in the past with the initial raw material export-oriented passive situation, realize the optimization and upgrading of product structure. Zhou Juqiu said that in 2004 China Import and Export of tungsten product volume and variety of changes, marking the country's tungsten industry product structure has been optimized, and has basically changed the situation of the export of primary products, industrial enterprises began to focus on the domestic tungsten extend the industrial chain, focusing on increasing product added values.Sina search coalition forces the heart of the 11th Chinese music chartassive music free download 2004, China AwardCustoms departments to provide data show that last year the first 10 months of tungsten products export trade amounted to $ 320 million, an increase of 45% over last year; trade surplus up 41% over the previous year. Increase in imported products mainly tungsten and other primary products, an increase of 170%; while the tungsten metal and metal products and other processed products volume fell 32.7%. China Tungsten Industry Association, the official said, after the Chinese Foreign basically concentrates export, import high-grade tungsten metallurgical products, and later as the domestic production of tungsten metallurgy technology and the development of intermediate products for export instead of tungsten oxide, ammonium paratungstate and tungsten iron-based, while foreign to Chinese intermediate products as raw materials, the production of high value-added tungsten products.Tungsten is a scarce and non-renewable resources, widely used in mobile phones, integrated circuits and micro-computer and other fields. MLR provides data show that China now has 269 mines have been identified tungsten tungsten ore reserves of 1.244 million tons, accounting for 45% of world tungsten reserves, ranking first in the world.

China Rare Earth in the international market will remain dominant

[Tungsten Online News - Tungsten News]
Some industry insiders here at the fifth "China Baotou Rare Earth Industry Forum", said that in recent years, accelerated development of rare earth resources abroad, the global supply of rare earth diversified pattern is taking shape, but the future of China in the international rare earth market dominance is difficult to shake.
Rare earth prices in the international market prices, tight supply and other factors, in recent years, the United States, Australia, Russia, India, Brazil, Thailand and other countries have moved to restore or start development of rare earth resources.
Baotou Steel Rare Earth Hi-Tech Co., general Molybdenum crucible Zhang said that at present, the production of foreign rare earth mine in Mountain Pass mine are the United States, Australia Weld mine, mine, etc. Russia's Kola Peninsula, these mines years production capacity from several thousand tons to 25,000 tons range, but there did not achieve full capacity. In addition, Vietnam, India, Australia, Canada, Kazakhstan, South Africa and other countries are also building a number of rare earth resources development projects, these projects into production, of production still time.
China Rare Earth Association Deputy Secretary-General Zhang Anwen said, according to incomplete statistics, the foreign enterprises built, under construction production capacity of close to 70,000 tons of rare earth, rare earth supply internationally diversified pattern is taking shape.
Zhang Anwen, who believe that the past 20 years, the global supply of rare earth heavily dependent on China, leading to excessive consumption of rare earth resources in China, illegal exploitation, destruction of the ecological environment issues outstanding. Supply pattern change, on the one hand will help China rare earth mine life extension, is conducive to the sustainable use of rare earth resources in China. On the other hand, China rare earth enterprises are facing competitive pressure will also increase.
Zhang and other enterprises responsible person said that the current rare earth development projects abroad, mainly the production of light rare earth products, so in the future light rare earth products will become increasingly fierce market competition, but China will remain in the production and supply of heavy rare earth products dominate.
In addition, foreign development of rare earth smelting separation project put into operation, will depress world market prices of light rare earth products. Taking into account foreign light rare earth products and Chinese products compared to the lack of light rare earth cost advantage, some foreign rare earth development, smelting separation project will face operating pressure, and even into a loss situation, Chinese products in the market is still very obvious advantages.

Main features:

TIG welding machine with a tungsten needle prices thorium tungsten welding cerium tungsten ingredients in a pure tungsten added 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.
    Commonly used tungsten chemical composition and grade
    Pure tungsten copper alloy electrode W1 W ≥ 99.92 SiO2 ≤ 0.03 Fe2O3Al2 ≤ 0.03 Mo ≤ 0.01 CaO
    Thoriated tungsten electrode 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 wire high melting and boiling points, easy to melt evaporation, burning, cutting-edge, less pollution, However, poor electron emission, is not conducive to the stability of the 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 must be protected from contamination on the base metal under special conditions, you can use this tungsten. This easy to maintain the hemispherical tip of the electrode, suitable for AC welding pieces, quality assurance, welcome to consult the discussion

In the metal cutting machine tools

 Family in the non-ferrous metals, tungsten maintain the "high-temperature Champion" long centuries. The world's first discovery of tungsten, the Swedish chemist Club Le. He first used in 1781 tungstate acid decomposition obtained tungsten element. Then, and after a period of painstaking research, only in 1848 the system out of pure tungsten. Pure tungsten silver-white, very beautiful, the proportion 19.1t/m3. Superior performance of tungsten is chemically stable, even in heated situations, nor and hydrochloric acid, sulfuric acid works, even in aqua regia will not be dissolved. Tungsten temperature, known as the hardest natural metal melting, melting point up to 3410 ℃; hardness of tungsten metal in the top, only heated to a high temperature in order to pressure processing. Uses unique tungsten has many unique uses, such as high hardness, tungsten, tungsten steel can be manufactured. Tungsten wire steel tools, high strength than ordinary steel tools several times or even several times; tungsten steel barrel, barrel, firing in a row, even when the barrel is too hot projectile friction, can still maintain good flexibility and mechanical strength. In the metal cutting machine tools, turning tools made of tungsten steel, temperature up to 1000 ℃ still hard as before. A solution of 3% to 15% of tungsten, tungsten-chromium-cobalt alloy plating or welding the parts of the surface of ordinary steel, it is equivalent to the parts wear hard "armor", both temperature compressive strength, but also resistance to corrosion, reduces wear life can be extended several times. Because of the superior properties of tungsten steel and broad purpose, the world's annual production of tungsten, 90% are used to produce tungsten steel. Tungsten plasticity. A 1 kg weight of tungsten rod, you can pull grow about 400 km, diameter of only 1% mm filaments. Such filaments at 3000 ℃ high temperature environment, still has a certain intensity, and high light, long life, is to create a variety of light bulb filament of good material. Incandescent, tungsten, and even the world's most innovative lamps, are manufactured with tungsten. The United States has used a new type of solid fuel, the rocket gas temperature exceeds 3000 ℃. In this case, the hardest melting tungsten nozzle too overwhelming. Scientists through research, manufacturing a new type of tungsten alloy - "self-cooling permeability porous tungsten alloy of silver." When the rocket flying high in the air, this new alloy with high temperature and pressure nozzle, spray continuously sparkling flames. The nozzle surface infiltration of silver at a high temperature first evaporated while absorbing the heat of evaporation. Thus, to achieve automatic cooling purposes and to prevent excessive temperature rise, the badly baked nozzle 3000 ℃ high temperature, is still able to maintain the original character.

Dayu rich in mineral resources

"Tungsten wire" I embarked on a large "green" development road
In recent years, Jiangxi Province, comprehensively promote the green mine construction, vigorously implement technological innovation projects, focus on the development of deep processing of mineral products, promote energy conservation, energy, pollution reduction, increasing efficiency unity, to promote the "world tungsten" to " Green tungsten "restructuring and development. China Nonferrous network.
 Dayu rich in mineral resources, has been found to have more than 90 kinds of mineral resources, which ranks first in the world tungsten resources, mining is a pillar industry of the county county economy. China Nonferrous network.
In recent years, the county adhere to green development, according to "who exploit, who protects, who destroyed, who govern, who invests, benefits" principle, the establishment of the mine geological environment protection and restoration of new mechanisms of governance, and actively guide the mineral development enterprises to increase investment in environmental protection, mining development and promote the coordinated development of the mine geological environment. China Nonferrous network.
County in order to focus on mining enterprises as a green building pilot mine, in order to point to promote mining to reduce the ecological damage to the environment and promptly restore the ecological environment. China Nonferrous network. In the production process of organizing, establishing pollution, no waste, no emissions of production systems, design, mining, transport and other sectors to implement a comprehensive "Green", the establishment and improvement of the underground filling system that allows mine waste rock and underground goaf treatment organically combine to ensure no new environmental problems; Meanwhile, the county established a mining enterprises waste water recycling systems, recycling of process water from top to bottom several times, both to reduce production costs, but also to ensure that waste water discharge standards; insists Use green side edge, the implementation of a total investment of 10 million yuan integrated environmental management project, the former open pit and waste slag pile rock slopes, into a stretch of verdant orchards, meadows and woodland, effective control of soil erosion , to avoid triggering a variety of geological disasters. China Nonferrous network.

CVC roll crossing rolled tungsten plate Finite Element Analysis

The traditional tungsten wire plate rolling rolling process, the roll easily damaged, tungsten plate rolling scrap serious phenomenon, access to relevant literature, based on the finite element analysis software DEFORM, study, CVC roll crossing rolled tungsten plate, according to the requirements of chose a CVC roll and established a finite element analysis model from the roll shape, stress and damage, the analysis of tungsten plate rolling process, and found the same rolling conditions, CVC roll crossing rolled tungsten plate rolling stress is the traditional craft about 3/4 of the mill load lighter. The results showed that: CVC roll crossing rolled tungsten plate of the new technology is superior to conventional linear roller-shaped tungsten plate roll rolling process.Electroplating and sandblasting cleaning and maintenance products
Alibaba home 2012-11-23 Source: Daily Furniture Tags: home purchase print
Electroplating and sandblasting products bright surface, fingerprints, smudges easily seen, and these stains will indeed accumulate more product surface coating on the brightness of an impact. However, you do not worry, these products are also very easy to clean up, as long as you always use dry. Clean cloth (or towel) to wipe bright as new.
Furniture is the most critical maintenance to keep them clean, the surface is easy to wipe whisk, as long as careful care, furniture will be like new, needs to be noted that: Avoid sharp scratching, this will cause permanent goods damage, affecting the appearance of products. (Hong Kong Konzen Group offers information)

Analysis sandblasting process has the advantage

Sandblasting is an abrasive with compressed air as the driving force to promote the work surface for processing, that is, we often say that the shot blasting, shot peening.
Sandblasting is an abrasive with compressed air as the driving force to promote the work surface for processing, that is, we often say that the shot blasting, shot peening. Because there early blasting technology, the sand is the only abrasive used, therefore, for a long time and later period of time, sand blasting has been known.
In fact blasting (shot peening) is widespread, in nature, sand, gravel and dirt in incessantly hitting the Tungsten wire, its abrasive slowly away, but this process was very slow and not easy to be aware of our Bale.
In a variety of surface preparation methods, blasting (shot blasting) the effect of the most thorough, most adaptable, widest range of applications, this is because: cleaned steel surfaces fastest and most thorough; blasting can only have develop acceptable to all four kinds of cleaning performance levels; blast cleaned often difficult to clean the surface, use some special tools to clean the inner surface of the pipe, blasting the lowest cost.
Sandblasting the surface can be cleaned at the same time to obtain the desired cleanliness and the surface roughness of a certain, improve the coating adhesion on the surface of the base two effects. Even the paint is not a good time for the surface treatment is not attached to the surface of the workpiece. The role of surface preparation is to clean the surface and on the surface generation used to "lock" the required coating roughness. After blasting of the surface coating with good performance industrial coatings, the coating life can be compared to other treatment of the same quality on the rear surface of the coating was 3.5 times higher. Blasting (shot blasting) Another advantage is that the surface roughness can be determined in advance upon request, and in the clean-up process is easy to reach.

Molybdenum on CIGS solar cells as the back contact material impact

 Molybdenum is often used in CIGS solar cells as a back contact material, sputtering target manufacturer recently Plansee in cooperation with the TU Bergakademie Freiberg in-depth study on this theme. Plansee research results published on the ICMCTF Conference, obtained molybdenum films have a decisive influence on the conductivity of the process error and defect types. Sputtering occurs during the process of impurities and incorrect temperature conductivity materials allegedly affect the main factors. Iron, nickel and chromium impurities if the content is too high, it may cause the film conductivity is reduced by 40% or more. To offset this effect CIGS manufacturing process can be improved purity of the sputtering target. If you misplaced or Molybdenum tube lattice defects, may also significantly affect the molybdenum film conductivity.
    Despite the dislocation contribute to the metal workability, but will as much as 14% decrease in conductivity. Plansee and TU Bergakademie Freiberg found in this area shows the impact can be up to 150 ° C degrees temperature instead of the previous process temperature to reduce by half.
    With such high temperatures can be reduced gathered in the interstitial lattice of impurities (usually nitrogen, oxygen and argon etc.) effects.
    As this may decrease the conductivity of the film will be 12%. tungsten wire up to 150 ° C, the small atomic lattice of molybdenum active enough to break the shackles. Molybdenum material tests on soda lime glass by coating a thin film to implement, so that it can release the basic characteristics of the thin layer, the resistance of the thin film measured by Transmission Electron Microscopy (TEM) and X-ray diffraction (GAXRD) analysis of microstructure of the film structure. Research group consists of TU Bergakademie Freiberg Institute of Materials Science and professor David Rafaja Plansee film material developer Harald K? Stenbauer leadership.

Halogen cycle process is this: in the appropriate temperature conditions

tungsten wire evaporates from the filament in the area of ??cell wall material react with a halogen, a halogen to form volatile compounds. As the bubble wall temperature is high enough (250 o C), gaseous halogen compounds, halogen compounds when spread to the area around the hotter filament and tungsten halogen Shiyou differentiation. Released to return to the tungsten filament, and continue to participate in the halogen cycle. Fluorine, chlorine, bromine, iodine, can produce a variety of tungsten halogen regenerative cycle. The main difference between them is the desired temperature cycling reaction occurs along with other substances within the lamp with varying degrees of action now mass production of various bromine tungsten lamp and pad tungsten lights, some lights are also part of the use chlorine as a loop agent. In order to make the resulting halide lamp wall in a gaseous state, halogen wall temperature is much higher than ordinary incandescent lamp. Accordingly, tungsten halogen bulb sizes will be much smaller, you must use high-temperature quartz glass or hard glass. As bulb size, high strength, light allowed on the high pressure, high temperature combined, the operating pressure within the lamp is much higher than ordinary light bulb inflator. Since the evaporation of tungsten halogen being more potent inhibition, while halogen cycle eliminates the bubble shell black, filament temperature and luminous efficiency can be greatly improved, and the lamp life can be extended accordingly. Divided into the main voltage halogen halogen (220V-240V direct access to power) and low-voltage halogen lamps (to be equipped with the appropriate adapter) are two low-voltage halogen lamps have a relatively longer life, safety performance lamps advantages. Choose halogen tips: color temperature of light, life, security, and whether filters to remove ultraviolet light.In 1959 it was discovered after the halogen cycle principle produce halogen, it gives thermal radiation source has injected new vitality, this kind of lamp, small size, light maintenance rate of 95% or more, the luminous efficiency and lifetime were significantly better than incandescent lamps. In recent years, it has produced can be directly applied to the grid voltage 220V or 110V halogen lamps, and its size can be as small ?14 × 54mm, with a filament stability and shock resistance are excellent characteristics, transparent and frosted bulb two kinds of different specifications, internal fuse in line with IEC A32-2 standard, G9 type lamp is easy to join, its main technical parameters are shown in Table 1 below. In recent years has launched a variety of energy-saving halogen lamps new varieties, such as on the use of quartz foam shell coated TiO2 / SiO2 infrared reflective layer technology (IRC) made JD-and JDR Halogen type novel, by allowing visible light through, and the process of the infrared reflecting back to the filament, the lamp luminous efficacy of 30% -45% increase, the life of 3000h. Since halogen chromogenic particularly good, but small volume and easy decoration, so much people still favored and widely used.

Tungsten tube application time :2013-7-20 7:34:06

Tungsten wire tube English name: Tungsten Tube appearance; silver-gray metal.
Implementation of the standards; GB / T 4187-1984 ASTM F288-90
Specifications; Φ (6.0 ~ 200) mm × Φ (3.0 ~ 180) mm × (50 ~ 400) mm Special sizes tube design and production according to customer demand.
Pipes are mainly used in high temperature furnace thermocouple protection tube, sapphire crystal furnace, high temperature sintering furnace support other aspects
Features; 1 has a very high purity, generally purity above 99.95%;

           2. Its density is more than 18.2g/cm3;

           3. Recommended operating temperature should be lower than 2500 ℃;

           4. Clarinet at 2027 ℃ was 0.2965;

           5. At 1600 ℃, the thermal expansion coefficient of 4.98x10-6;

           6. At 1400 ℃ for the specific heat capacity of 0.16J / g. ℃.
Molybdenum tube, the English name molybdenum. The density of 10.2 g of molybdenum / cc, melting point 2610 ℃, boiling point of 5560 ℃. .
Molybdenum tube preferably at temperatures below 1800 ℃ long term, short-term use temperatures up to 2000 ℃; tungsten tube is able to work at 2100 ℃ long-term.
We are professional making seamless tungsten, molybdenum tube manufacturers, is currently the only time I played molding of the longest, most detailed, most tungsten and molybdenum tube, the normal use temperature 2300 ℃, melting point 2600 ℃),

The company's credo is to provide the most appropriate for each job are cutting metal

Swiss Carbide Corporation was founded in 1941, is Europe's largest manufacturer of carbide blanks, also the world's first production of carbide factories. Carbide company to do more than 60 years, has accumulated a wealth of experience. The adoption of strict standards ISO9001 and ISO14001 production, with excellent quality. Swiss stock company production of carbide carbide materials marketing in Europe, the Americas, for every area of ​​application of carbide, the company has the right grades to meet their requirements. The company's credo is to provide the most appropriate for each job are cutting metal.
The message "Supply of imported tungsten carbide rods" by the Texas Trading Co., Ltd. Beijing Office Kiss for you. If you have the relevant imports of tungsten carbide rod trading needs, please contact Texas Kiss Trading Company Beijing Office direct contact or a message to them in the siteTIG and plasma welding quality is an important condition for accurate grinding Tungsten wire.
Tungsten electrode grinding machine for its precise longitudinal taper and angle grinding, so that
Tungsten maintain optimum dimensions.
Diamond grinding disc to obtain a constant quality of the surface, the results extend tungsten
The life, improved quality, and to obtain more arc stable arc.
Technical parameters: motor 220V, 50Hz, 5000rpm
Grinding range: tungsten diameter 1.0mm, 1.6mm, 2.0mm, 2.4mm, 3.2mm, 4.0mm, 4.8mm, 6.0mm
Tungsten Length: ≥ 10mm
Grinding angle :10-70o
Weight: 1.85KG

Tungsten needle main purposes

Tungsten needle main purposes: for the production of high intensity gas discharge lamp arc tubes electrode.Because the characteristics of tungsten, makes it very suitable for soldering and other similar tiG electrode material such work. In adding rare earth oxides of tungsten to stimulate its electronic work function, making the tungsten electrode welding performance can be improved: electrode arc better performance, higher stability of the arc column electrode burning rate is smaller. Usual additives earth cerium oxide, lanthanum oxide, zirconium oxide, yttrium oxide and thorium.Tungsten wire needle for TIG welding, which is a tungsten matrix by powder metallurgy method of incorporation of about 0.3% -5% of a rare earth element such as: cerium, thorium, lanthanum, zirconium, yttrium and the production of tungsten alloy bar, then through pressure processing, diameters from 0.25 to 6.4mm, standard lengths from 75 to 600, while the most commonly used specifications for diameter 1.0,1.6,2.4 and 3.2, the shape of the TIG electrode terminal is a critical factor when Use DCSP, the electric extreme need to grind the tip shape, and with its tip angle range of applications, electrode diameter and welding current to change, narrow joints need a smaller tip angle when welding very thin materials, the need to low current, needle-like electrodes for a minimum to stabilize the arc, and to ensure proper grounding electrode arc easily, good arc stability and appropriate weld bead width. When the AC power to the welding, grinding electricity without the extreme, because using the appropriate welding current, electrode terminals will form half of the ball, if the increase in the welding current, electrode tip becomes bulb-shaped and may melt and contaminate molten gold.Tungsten high melting point (3683 ℃ ± 20 ℃), the electron emission capability, high modulus, low vapor pressure, so it has long been used as a thermal electron emission material [. Pure tungsten electrode emission efficiency is low and at high temperatures the formation of equiaxed recrystallized grains leaving the filament sag, break. To overcome these shortcomings, to adapt to modern industrial new technologies, new technology development, national materials workers are committed to research and development of new electrode materials. Some doped tungsten-based low electron work function of rare earth oxides, both to improve the recrystallization temperature, but also activate the electron emission. Rare earth metal oxide has excellent thermal electron emission capability, rare earth tungsten electrode material has been an alternative to conventional radioactive thoriated tungsten electrode material development direction. This article describes several rare earth tungsten electrode material preparation and research, as well as the electrode material on the application of the situation and prospects of the tungsten electrode potential applications, designed for China's rare earth tungsten electrode materials research and application of reference.Tungsten wire needle in the arc in TIG arc starting, arc stability and weld quality have played an important role. In the arc occurs under high temperature loss of quality tungsten electrodes, tungsten electrodes called ablation. To facilitate discussion of the tungsten electrode ablation mechanism, ablation can be divided into ablative and tungsten oxide added ablation itself.

Tungsten needle

WT20 thorium tungsten electrode tungsten needle commonly used chemical composition and grade
Pure tungsten electrode W1 W ≥ 99.92 SiO2 ≤ 0.03 Fe2O3Al2 ≤ 0.03 Mo ≤ 0.01 CaO
Thoriated tungsten electrode 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 high melting and boiling points, easy to melt evaporation, burning, cutting-edge, less pollution, However, poor electron emission, is not conducive to the stability of the 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 must be protected from contamination on the base metal under special conditions, you can use this tungsten. This easy to maintain the hemispherical tip of the electrode, suitable for AC welding strip, welcomed the consultation
These are the WT20 thorium tungsten needle for more information if you WT20 thorium tungsten needle, price, Molybdenum tube , model, pictures have any questions, please contact us for WT20 thorium tungsten needle latest information.
WT20 thorium tungsten electrode tungsten needle commonly used chemical composition and grade
Pure tungsten electrode W1 W ≥ 99.92 SiO2 ≤ 0.03 Fe2O3Al2 ≤ 0.03 Mo ≤ 0.01 CaO
Thoriated tungsten wire electrode 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 high melting and boiling points, easy to melt evaporation, burning, cutting-edge, less pollution, However, poor electron emission, is not conducive to the stability of the 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 must be protected from contamination on the base metal under special conditions, you can use this tungsten. This easy to maintain the hemispherical tip of the electrode, suitable for AC welding strip, welcomed the consultation
These are the WT20 thorium tungsten needle for more information if you WT20 thorium tungsten needle, price, manufacturer, model, pictures have any questions, please contact us for WT20 thorium tungsten needle latest information.

Chinese demand for copper and aluminum imports fell downturn

June Chinese copper, aluminum, crude oil, iron ore and other raw materials, imports of energy products have a certain decline, once again confirms the fact that the slowdown in Chinese demand.Customs data show that in June China unwrought copper and copper imports 346,200 tons, compared with May to drop 17.5 percent; June copper imports 370,000 tons, compared with 420,000 tons in May down 12% qoq.June Chinese unwrought aluminum and aluminum imports 89,600 tons, compared with 91,100 tons in May Tungsten wire fell 1.6%. June alumina imports 310,000 tons, compared with 720,000 tons in May to drop 57%.June China's crude oil imports 21.72 million tons, compared with May hit a record high of 25.48 million tons reduction of 14.8%.First half of this year, total imports and exports grew 8%, but fell by 18% year on year. Import and export growth slowed show weak domestic demand is an indisputable fact.For the real economy, the short-term stimulus will not solve the long-term structural problems. China's economy is facing problems, is deep-seated contradictions between supply and demand imbalance has not effectively addressed, "lack of demand" and "overproduction" contradictory or normalized.Economists said the decline in imports in June compared with the domestic economic development more closely related to the announced second quarter economic data is not ideal, so the domestic demand for imports may decline as the economy slowed in the third quarter foreign trade situation is not will be particularly good. Domestic consumption outlook remains poor, there should be more stimulus measures.

is excellent high temperature thermocouple materials

Tungsten doped tungsten powder is added in about 1% of silicon, oxides of aluminum and potassium in the vertical melt (from resistance sintering) process, volatile additives hydroxide, the formation of pores in the material, the trailing edge of the processed hole axially elongated; annealed to form elongated hole parallel to the filament axis dispersed bubbles line, this dispersion foam bubbles known as potassium. Potassium tungsten wire bulbs impede lateral grain growth, improve anti-sagging properties of high-temperature tungsten, but also to improve the room temperature ductility after recrystallization, help around the wire and transport storage. China tungsten-doped high-temperature creep values ​​by WAl1, WAl2, WAl3 three kinds of grades. In the W-ThO2 alloy, since the added amount of thermal stability, good dispersion of the particles ThO2, not only can reduce the electron work function, can inhibit the grain growth of tungsten, the material has a high recrystallization temperature, excellent high-temperature strength and creep resistance. Tungsten-thorium alloy is widely used in not only the thermal electron emission material, and is an excellent electrode material.Tungsten-rhenium alloys, rhenium addition, not only can improve the strength of the material, to improve the recrystallization temperature of about 200 ~ 400 ℃, the secondary recrystallization good plasticity, grain growth is slow, and can significantly reduce plastic - brittle transition temperature. Added if more than 30% of rhenium, it will damage the alloy processing performance. Tungsten-rhenium alloy also has a high thermoelectric power, at 2200 ℃, its thermoelectric power linear relationship with temperature. Tungsten-rhenium thermocouples measure the temperature up to 3000 ℃, is excellent high temperature thermocouple materials