Coarse tungsten powder is a coarse-grained tungsten powder compared with other grain size. It is a raw material of crude tungsten carbide, with a purity greater than 99.9%. Application The coarse tungsten powder with uniform grain size is the raw material for producing coarse tungsten carbide. The more coarse the tungsten carbide particles are, the more coarse the coarse tungsten powder should be. Tungsten carbide particle size first determine the size of coarse tungsten powder, the temperature and other conditions…
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Tungsten powder is pure tungsten in powder, and usually used as material for tungsten product. Property Tungsten powder is apparent black powder, cubic crystal, polygon particle shape. Its melting point is 3400 ℃, boiling point is 5555 ℃. The regular granularity is 2~10um. In addition to impurity content of the tungsten powder has certain requirements, the oxygen content to be controlled within a certain range. The performance of tungsten powder has a direct impact on the production of tungsten materials…
High purity tungsten powder is a kind of tungsten powder with a purity of at least 99.99%, which can be used in special high-temperature devices, large scale integrated circuits, and semiconductor transistors. Chemical Composition The contents of tungsten elements can be 99.99%~99.999%, and the total content of all impurity elements should be controlled between (0.1 ~ 1000) x 10-12. Products High purity tungsten bar, tungsten rod, tungsten electrode, tungsten wire, high purity tungsten flake, tungsten plate, pure tungsten and tungsten…
High activity nanometer tungsten powder is nanometer tungsten powder with high purity, high hardness, high proportion and good fluidity. It is commonly used in powder metallurgy and high temperature resin, or as shielding material. Specification Common Specifications: 200 mesh, 300 mesh, 400 mesh; Fess: 3.5~2.6μm, 2.5μm, 1.5μm; The particle size suitable for spraying : 150~300 mesh, 200~400 mesh, and so on. Application High activity nanometer tungsten powder can be used raw material additive of high performance high proportion alloy powder…
Nanometer tungsten powder is a nano-sized tungsten powder, which is an indispensable dingal material in many high-tech fields. Property Nanometer tungsten powder has uniform particles, highly active, larger specific surface area, and can be controlled under 1% after passivation. Application Nanometer tungsten powder has been widely used in aerospace alloys, electronic packaging alloys, electrode materials, microelectronic films, sintering additives, protective coatings, gas sensor electrodes and so on. It has become indispensable to many high-tech fields of dingal materials , is…
Ultrafine tungsten powder has characteristics significantly of high density, high temperature resistant, high hardness, is the important raw materials in a variety of important dingal materials and structural materials, is indispensable high-tech materials of many fields. Characteristic Ultrafine tungsten powder has high density, high temperature resistant, high hardness. Preparation method Preparation methods of ultrafine tungsten powder has a dry atmosphere reduction method, tungsten trioxide circulation oxidation – reduction method, hydrogen reduction of purple tungsten hydrogen reduction method, halogenate tungsten method,…
Fine tungsten powder is a relatively small amount of tungsten powder, has high quality and high purity, is mainly used as the raw material for tungsten contact, high gravity tungsten alloy and tungsten bar. Appearance The appearance is light gray or dark gray, uniform color and appearance. Purity The purity of fine tungsten powder can reach above 99.95%, impurity content is very few. Granularity Its granularity is uniform, and no clamping or pinching phenomenon occurs. Application Fine tungsten powde is…
Tungsten carbide grits is composite of tungsten carbide and cobalt. The cobalt content is within 8% to 9%, tungsten carbide with 91% to 92%. Our tungsten carbide grits with excellent properties of high hardness, T.R.S., strength, high toughness, heat resistance and corrosion resistance. Main Mesh and Grain Size Type Mesh Grain Size mm Type Mesh Grain Size mm Corse 4-6 4.76-3.17 Medium 6-10 3.17-1.98 5-8 3.96-2.38 6-14 3.17-1.59 6-8 3.17-1.59 8-10 2.38-1.98 Fine 8-14 2.38-1.59 Very Fine 20-30 1.19-0.79 10-14…
Except Rockwell hardness (HRB) of detection, it is essential that electrical conductivity measuring in tungsten copper composite materials as heat sink materials. Electrical conductivity is an important indicator to measure ability to conduct electricity of tungsten copper heat sink, which directly affects the final properties of products. The stronger ability to conduct electricity, the smaller electrical resistance, on the contrary, electrical resistance is greater. For hardness testing, if tungsten copper material over-burning, the inside Cu phase will exude and lead…
After material preparation and injection, the following steps are degreasing and sintering. Degreasing process is also known as forming agent or binder removal, which is the use of physical or chemical methods the added binder (such as alcohol, paraffin and the like) were removed. It needs the longest time of PIM and is the most difficult to control. Improper operation will cause the deformation or uneven component defects of tungsten copper blank, which will affect the final properties of tungsten…