How to machining tungsten alloy

In cobalt, nickel as a binder in powder metallurgy method to burn into tungsten carbide ball alloy density is big, known as the high density alloy,Also known as the high proportion alloy.This kind of alloy can be by forging or heat treatment to increase the density and strength.usuallyThe tensile strength of Kekai tungsten & Molybdenum tungsten carbide rod alloy is sigmaB> 981 mpa, the hardness of> HRC40.

The coefficient of thermal conductivity of tungsten alloy is smaller than pure tungsten,Chip is granular,Chip knife - contact length is short,The cutting temperature tungsten carbide rods,

Easy to produce knife tumor and adhesive wear.

Good cutting tungsten alloy tool materials thermal conductivity,

The bending strength

Degree and higher toughness,

Good red hardness.

Recommended use tungsten carbide base fine grained ultra-fine grain cemented carbide,Such asYDl5,YM051And so on.Sharp cutting tungsten alloy, tool requirement, and to ensure the blade intensity. Cutting tool geometry parameter can be used:gammao8 = -O,Alpha.o= 8O,κR= 75O,REpsilon.= 0.5 mm.

Cutting parameter can be used:argumentC= 38 m/minF/r = 0.24 mm,a.= 1 mm

. When cutting without cutting fluid. 

Use thorium tungsten electrode

To provide you with the latest tungsten price quotes, real and effective tungsten manufacturers, traders and demand information, different models, specifications, brands tungsten product information.

Tungsten is a gray steel colored metal , tungsten powder to restore the rule of law was gray , granular tungsten powder is dark gray , ultra- fine grained Kekai Tungsten & Molybdenum Technology molybdenium powder is black. High melting point of tungsten 3400 ℃. Large copper tungsten hardness, high density , high temperature strength. Tungsten is mainly used for the production of tungsten carbide and tungsten carbide -based iron . Tungsten, chromium , molybdenum, cobalt for the production of heat- resistant alloy cutting tools, metal surface hardening material , gas turbine blades . Tungsten, tantalum , niobium , molybdenum, refractory alloy composition . Tungsten and molybdenum alloys copper -silver alloy for electrical contact materials. High density tungsten nickel-copper alloy for radiation protection shield . Tungsten wire, tungsten rod , tungsten sheet for the production of light bulbs , components and arc welding electrode tube . Tungsten and its alloys are widely used in electronics , electric light , space and weapons ( rocket nozzles , armor-piercing core ) . Alloy tool steel, high speed tool steel , forging die steel , structural steel, spring steel , heat-resistant steel and magnets are added tungsten.

Thorium tungsten electrode

Thorium Kekai tungsten & Molybdenum Technogy tungsten rods electrode is the earliest use of rare earth tungsten electrodes , is so far the best performance of the tungsten sheet electrode welding varieties , therefore , on a global scale the highest market share in the tungsten electrode varieties, but because thorium tungsten tube electrode grinding and polishing in metallurgy and rolling radioactive contamination occurs during the so European countries to limit the production of the varieties electrode , but because of its excellent welding performance, its use is not restricted.
Thoriated tungsten electrode containing thoria (Th02 or thoria ) , it is most commonly used in the U.S. tungsten electrode Analyzing other tungsten weights electrode has become a standard quality . However, since such low levels of tungsten electrodes radiation hazards , many users have switched to the other options. Overall, 2% of the thorium tungsten electrode is a relatively good tungsten electrode , has the lowest work function , even under overload voltage also performed well . Thorium tungsten wire electrode performance in many respects superior to pure tungsten electrodes. Thorium oxide provides higher current carrying capacity than pure tungsten about 20 percent , generally longer life, but also help prevent contamination of welding time . Use thorium tungsten electrode arc starting easier and more stable than pure tungsten arc electrode or zirconium tungsten electrodes. Thorium tungsten electrode 1% (EWTh - 1) and thorium tungsten electrode 2% (EWTh - 2) can be used DCEN. They remain in the tip of the welding process sharpened , so the welded steel pipe can be used , usually not current, because it is difficult to maintain the spherical tip of the welding without cracking , which is necessary for the DC .

Tungsten carbide ball

Tungsten carbide , the formula WC. Called the Wolfram Carbide, black hexagonal crystals with metallic luster , hardness close to diamond , electricity, good heat conductor .
Melting point 2870 ℃, boiling point 6000 ℃, relative density of 15.63 (18 ℃). Tungsten does not dissolve in water , hydrochloric acid and sulfuric acid, and easy,Dissolved in nitric acid - hydrofluoric acid mixture . Pure Kekai tungsten & Molybdenum Technogy tungsten carbide rods carbide fragile, if mixed with a small amount of titanium, cobalt and other metals, can reduce brittleness. Tungsten carbide steel cutting tool is used , often by adding titanium carbide, tantalum, or mixtures thereof , to improve the antiknock capacity. Chemical stability of tungsten carbide . Tungsten carbide , the carbon atoms in the metal lattice embedded tungsten carbide rod gap , does not destroy the original metal lattice , interstitial solid solution is formed , it is also known as interstitial ( or insertion ) of the compound . High mixture of tungsten carbide and carbon can be prepared by heating , in the presence of hydrogen or hydrocarbons can accelerate the reaction. If the oxygen-containing compound was prepared using tungsten carbide ball , the final product must be subjected to vacuum treatment 1500 ℃, to remove the oxides of carbon . Suitable machined tungsten carbide at high temperature , the cutting tool can be produced , the material structure of the furnace , jet engine , gas turbine nozzles. Another is a compound of tungsten carbide and carbon two tungsten formula W2C, a melting point of 2860 ℃, boiling point 6000 ℃, relative density of 17.15 . Its nature, preparation method , use the same tungsten carbide steel , also known as carbide hardness second only to diamond , it is chemically stable , even in the case of heating , and no hydrochloric acid, sulfuric work, even in aqua regia can not be dissolved . Tungsten temperature, known as nature's most insoluble metal , melting point up to 3410 ℃; hardness also among the best in the metal , only heated to high temperatures, in order to pressure processing. Our production of tungsten balls are widely used in water meters , flow meters , pens and other fields !

Tungsten applications

Tungsten is widely used, the most common is tungsten&moly tungsten weights carbide 

(WC) carbide. Such carbide used in metalworking , mining , 

oil and construction industry as durable metal . In addition, 

in the tungsten filament bulbs and tubes applications are 

very wide. Tungsten is also used as an electrode . You can 

pull into a very fine tungsten wire , and a very high melting 

point . Its other applications include :

Due to a very high melting point of tungsten wire , so 

commonly used in the aerospace and high-temperature 

environments , such as electronics, heating and welding (EG 

gas tungsten arc welding ) .

Tungsten is very hard, very close , and therefore ideal 

for the production of heavy metal alloy , this alloy is used 

in the armor, heat sinks and high- density applications such 

as ballast, balance weights , boats and aircraft, ballast and 

so on .

Because tungsten is very close , darts often contain 80-

97% of tungsten.

High-speed steel with tungsten sheet , sometimes containing 18 

% tungsten .

Turbine manufacturing tablets, durable and protective 

layer portion containing tungsten superalloy ( Hastelloy , 

Stellite , etc. ) .

Using tungsten bullets instead of lead.

Tungsten compound is used as catalyst, inorganic colors. 

Tungsten disulfide is a high-temperature lubricant , it 

remained stable at 500 ° C.

Since a similar rise and tungsten borosilicate glass , so 

people carried it with glass / metal seal

Tungsten and nickel, iron and cobalt alloys are used to 

make heavy alloys , such as heavy alloys used in kinetic 

energy to replace depleted uranium bombs .

Tungsten in an integrated circuit is connected between 

the road thing . Silica insulator erosion contact hole 

injection tungsten polished to connect transistor. Typical 

contact holes as small as 65 nm.

Tungsten is one of the hardest material , was used in the 

machine tools and abrasives . Tungsten carbide is abrasive 

and turn with the most common material , and often the best 

materials .

Tungsten is in radiology shielding material . 

Transportation fluorodeoxyglucose general use tungsten 

container because fluorodeoxyglucose in high energy fluorine

-18 lead containers so can not be used .

Chemical properties of tungsten

Refractory metal tungsten&moly tungsten wire is a rare , high-temperature

hardness of the steel can be improved , the sixth period of

the periodic table are ( second long cycle) Ⅵ B family.

tungsten weights is a silvery-white metal that looks like steel.

Tungsten high melting point, low vapor pressure , evaporation

rate is also small . Tungsten is chemically stable at room

temperature when not react with air and water when not

heated, any concentration of hydrochloric acid, sulfuric

acid, nitric acid, hydrofluoric acid and aqua regia tungsten tube

are ineffective when the temperature was raised to 80 ° -100

when ° C, these various acids , except hydrofluoric acid ,

the other weak acid on the role of tungsten occur . At room

temperature , can be quickly dissolved in a mixture of

tungsten acid, hydrofluoric acid and concentrated nitric acid

, it does not work in an alkaline solution. The presence of

air under the conditions of the tungsten oxide can be melted

into the base tungstate , in the presence of an oxidant

(NaNO3, NaNO2, KClO3, PbO2) exists , the generation of a more

violent reaction tungstate . High temperature with chlorine,

bromine , iodine , carbon, nitrogen , sulfur and other

compounds , but not together with the hydrogenation .

The strategic significance of tungsten

Strategic Metals: Tungsten is a strategic metal . As we all

know , rare is an important strategic national resource , and

is typical of the rare metal tungsten&moly tungsten rods has a very important

purpose. It is an important part of contemporary high-tech

new materials , a series of electro-optical materials,

special alloys, new functional materials and organometallic

compounds such as are required to use the unique properties

of tungsten sheet. Although the amount is small, but vital , lack

of it can not . Which is widely used in modern communication

technology, computer , aerospace development ,

pharmaceuticals, photographic materials, optoelectronic

materials, energy materials and catalyst materials. China has

taken measures to limit and restrict the export of mining led

to China and the United States, the EU disputes , we can see

that the strategic significance of rare metal tungsten tube is

unusual in terms of tungsten represented .

Copper and molybdenum production forecast

Chinese production is expected to maintain a moderate growth
"By 2013, global tungsten&moly tungsten alloy supply growth will accelerate China's copper production is expected to maintain a moderate growth trend." March 28, Beijing Antaike Information Development has

Limited analyst Yang Changhua forecast, benefiting from the sharp rebound in copper mining and smelting of copper production capacity expansion, global refined copper production is expected to reach 20.65 million tons, with

An increase of about 4.1%.
According to Yang Changhua analysis, global tungsten project into operation gradually peak last year, global copper production of about 20 items (excluding China), with production capacity of about 820,000

T; This year there are still about 20 copper project into production, with production capacity of around 1.22 million tons, including the Oyu Tolgoi copper mine in Mongolia 45 tons capacity.
"A lot production release, will drive copper concentrate production increased at a faster pace." Yang Changhua said, "this year's global copper concentrate production will reach 13.62 million tons, an increase of

Long 6%. "
For domestic copper market, Yang Changhua said that with Wunugetushan copper-copper molybdenum mine, copper and other large-scale projects Duobaoshan gradually reach capacity, as well as some small copper mine production

This year is expected to increase production capacity of 1.52 million tons of copper, an increase of 7.7%. Taking into account this year will be the peak year for the domestic copper smelting capacity release expected in refined copper

Production will reach 6.1 million tons.
National Bureau of Statistics recently released data show that the first two months of this year, China's total production of 975,000 tons of refined copper, an increase of 11.9%.
Antaike analytical data show that in 2013, global refined copper will still continue oversupply trend is expected oversupply of about 400,000 tons; China's refined copper

Imports may fall, but the excess supply will remain at around 70 million tons.
Related Links
According to the International Copper Study Group (ICSG) statistics, in 2012, global refined copper production was 16.5 million tons, up from 2011's 16.2 million tons.

Copper-molybdenum separation equipment

Separation of copper tungsten concentrates mixed jobs currently used as flotation machine flotation machine Achilles Gentile, and Wei Muke Denver flotation machine flotation machine, the most used are the first two, Granville  flotation machine used only in flat . The former two inflatable mechanical agitation, mechanical agitation of the latter. Trough the volume of flotation machine is not large, rougher and sweep

Chosen as 1.13 to 2.83 m 3, selected from 0.68 to 1.4 m 3. Ping Tuoli Wali new plant for the first two ofmolybdenium rougher and selection of Wei Muke 120 cases of flotation machine is

In addition, the tank volume of 8.5 m 3