Granulated Tungsten Powder (Accelerator & Alloy Powder) has a number of valuable uses in today’s world. For example, Granulated Tungsten Powder is used as a catalyst in laboratory material analyzers.
All powder is commercially uniform in purity. The Chemical and Physical Analyses are determined for each production lot of powder by using commercially accepted methods. The results of all relevant tests are reported to the customer on a Certificate of Analysis.
Packaging:
50 kg/100 lb packed in a polyethylene bag within a 3½-gallon metal pail, or 250 kg/500 lb packed in a polyethylene bag within a 17-gallon drum.
Please visit our site www.tungsten-powder.com in order to find more detail about tungsten powder.
2012年10月31日星期三
2012年10月28日星期日
Coarse Tungsten Powders Description
Coarse Tungsten Powders are:
- Primarily intended for applications utilizing non-thermal powder consolidation technologies (tungsten– polymer/elastomer, deformable metal binder, etc.)
- Special powder processing services available for narrow distribution, increased apparent density, and/or high flowability
- Provides coarse particle size with low alkali metal content-ideal for thermal spray.
- Widely used for lead-free ammunition and moldable radiation shielding products.
- Useful as a pour-in high density filling material for irregular shaped cavities to add weight or radiation attenuation.
2012年10月25日星期四
Description of tungsten trioxide
Tungsten trioxide, also known as tungsten(VI) oxide or tungstic anhydride, WO3, is a chemical compound containing oxygen and the transition metal tungsten. It is obtained as an intermediate in the recovery of tungsten from its minerals.
Tungsten ores are treated with alkalis to produce WO3. Further reaction with carbon or hydrogen gas reduces tungsten trioxide to the pure metal.
- 2 WO3 + 3 C + heat → 2 W + 3 CO2
- WO3 + 3 H2 + heat → W + 3 H2O
Tungsten(VI) oxide occurs naturally in form of hydrates, which include minerals: tungstite WO3·H2O, meymacite WO3·2H2O and hydrotungstite (of same composition as meymacite, however sometimes written as H2WO4). These minerals are rare to very rare secondary tungsten minerals.
2012年10月23日星期二
Description of Tungsten Carbide Powder
ungsten powders have been developed and produced to offer the
purity and uniform particle size distribution demanded by manufacturers
of high performance tungsten and tungsten carbide products.
Chinatungsten Online manufactures tungsten powders ranging in size from
0.40 microns (type M10) to greater than 17.50 microns (type M70). If a
standard size does not meet your specification, CTOMS can work with
customers to engineer tungsten powders to meet specific application
needs. From our internally produced tungsten powders, CTOMS
manufactures tungsten carbide powders ranging from nano to ultra
course. Our micrograin tungsten carbide powders are used for circuit
board drills, nozzles and end mills. Fine WC powders are used in
cutting tools and inserts. Medium and ultra-coarse powders are are
required for mining tools, energy drilling tools, wear and die parts,
and road construction bits. The physical and chemical properties of
CTOMS tungsten carbide powders are carefully controlled to ensure
consistency in lot-to-lot performance. Our manufacturing capabilities
in North America and Europe deliver word-class quality and service.
1) Tungsten carbide is a made up of chemically bonded tungsten and carbide. Its superior hardness enables it to replace steel and other metal alloys in a variety of applications.
2) Colloquially, tungsten carbide is often simply called carbide. In its most basic form, it is a fine gray powder, but it can be pressed and formed into shapes for use in industrial machinery, tools, abrasives, as well as jewelry.
3) Tungsten carbide is approximately four times stiffer than steel, with a Young's modulus of approximately 550 GPa,and is much denser than steel or titanium. It is comparable with corundum (a-Al2O3) in hardness and can only be polished and finished with diamond wheels and compounds.
1) Tungsten carbide is a made up of chemically bonded tungsten and carbide. Its superior hardness enables it to replace steel and other metal alloys in a variety of applications.
2) Colloquially, tungsten carbide is often simply called carbide. In its most basic form, it is a fine gray powder, but it can be pressed and formed into shapes for use in industrial machinery, tools, abrasives, as well as jewelry.
3) Tungsten carbide is approximately four times stiffer than steel, with a Young's modulus of approximately 550 GPa,and is much denser than steel or titanium. It is comparable with corundum (a-Al2O3) in hardness and can only be polished and finished with diamond wheels and compounds.
2012年10月12日星期五
Tungsten Carbide Powder Application
Tungsten carbide is a tungsten-carbon compound that contains an equal
number of carbon and tungsten atoms. It is a fine, gray-black powder
that is pressed into various shapes for use in applications. According
to "Handbook of Chemical Vapor Deposition," tungsten carbide is prepared
by the reaction of carbon with tungsten metal at temperatures between
1,400 Celsius to 2000 Celsius. Tungsten carbide powder comes in many
shapes, particle sizes, microstructures and chemical compositions,
including fine tungsten monocarbide powder and macrocrystalline
tungsten.
Abstract:Ultra-Fine Tungsten Carbide Powder Prepared by a Nitridation–Carburization Method
WC powder was synthesized by a nitridation–carburization method with WO3 prepared by the citrate sol–gel route as the starting material, and the reaction mechanism was investigated. It was found that WO3 was converted to nanosized W2N after the nitridation process in NH3. Then, the W2N was transformed to W metal, W2C, and WC in sequence when it was carburized in CH4–H2 gas mixture. The WC powder obtained possessed a high specific surface area of 24.6 m2/g, and showed a particle size of 20–30 nm, which was much finer than the WC powder prepared by direct carburization of WO3 in CH4–H2 gas mixture. The reason was also discussed.
Please visit our site www.tungsten-powder.com in order to find more detail about tungsten powder.
Please visit our site www.tungsten-powder.com in order to find more detail about tungsten powder.
2012年10月7日星期日
Nano-Tungsten Carbide Powder Application
1. Nano-Tungsten carbide powder applied in composite materials, improve its performance: Nano-Tungsten carbide-cobalt (WC-Co) composite performance carbide powder preparation is the main raw materials and wear-resisting coating. Such as: cutting tools, computer, machinery, etc;
2. Nano-Tungsten carbide powder appropriate under high temperature on mechanical processing, can produce cutting tools, kiln of structural materials, the jet engines, gas turbines and nozzle, etc.
Please visit our site www.tungsten-powder.com in order to find more detail about tungsten powder.
2. Nano-Tungsten carbide powder appropriate under high temperature on mechanical processing, can produce cutting tools, kiln of structural materials, the jet engines, gas turbines and nozzle, etc.
Please visit our site www.tungsten-powder.com in order to find more detail about tungsten powder.
Nano-Tungsten Carbide Powder Properties
1. Nano-Tungsten carbide powder, has high purity,
particle size uniform dispersion of good, is an important raw material of
producing cemented carbide, nano tungsten carbide powder can make hard alloy has
many more excellent properties;
2. Nano-Tungsten carbide powder except has high hardness, hard king outside, still has wear resistance, corrosion resistance, temperature, etc;
3. The melting point was 2860°C±50°C, boiling point was 6000°C and also insoluble in water, strong acid resistance, high hardness and elastic modulus.
2. Nano-Tungsten carbide powder except has high hardness, hard king outside, still has wear resistance, corrosion resistance, temperature, etc;
3. The melting point was 2860°C±50°C, boiling point was 6000°C and also insoluble in water, strong acid resistance, high hardness and elastic modulus.
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