成人a毛片手机免费播放-成人a毛片在线看免费全部播放-成人a视频高清在线观看-成人a视频片在线观看免费-欧美三级中文字幕hd-欧美三极

Super fine spherical tungsten carbide powder has a spherical shape, small particle size and good fluidity. It is an important thermal spray material and has a wide range of applications. Characteristic The super fine spherical tungsten carbide powder has a spherical appearance, good powder fluidity, high surface quality of the coated workpiece, fine grain in the powder, high hardness, and better abrasion resistance of the coating. Preparation Tungsten powder, carbon black, tungsten carbide precursor or polycrystalline tungsten carbide are used…

Medium fine grain size tungsten carbide powder has small particle size and high homogeneity. It is the main raw material for the production of tungsten carbide, and can be prepared by direct reduction carbonization. Preparation It can be directly reduced and carbonized into tungsten carbide powder by tungsten-containing precursor powder, which is a method suitable for industrial scale production. The continuous process using direct reduction carbonization can shorten the process flow and increase the efficiency of the generation of medium…

High temperature tungsten carbide powder has the characteristics of high purity, complete lattice, and good particle geometry. It is an important raw material for tungsten carbide production by adopting high temperature carbonization process. Application The microstructure of WC-6%Co alloy prepared by high temperature tungsten carbide powder is uniform, and the crystal phase of tungsten carbide hard phase is complete, the average grain size is 2.0~2.5μm, and the hardness and bending strength are HRA 90.0 and 3000MPa, respectively. Its performance is…

Tungsten carbide alloy powder has characteristics of high hardness, wear resistance, corrosion resistance, high temperature resistance, etc. It is an important tungsten carbide material and catalytic material with broad application prospects. It can be prepared by spray drying-fluidized bed method and fixed bed method. Application It is also an important catalytic and electroactive material. It exhibits good catalytic activity for some hydrogenation reactions, alkane cracking, catalytic reforming, and catalysts for fuel cells. Its catalytic activity is similar to that of…

High melting point spherical tungsten carbide powder has high melting point, good fluidity, good abrasion resistance and excellent overall performance. It is suitable for machining at high temperature and can be used to make cutting tools, nozzles and so on. Application The high melting point spherical tungsten carbide powder is suitable for machining at high temperature, and can be used for manufacturing cutting tools, kiln structural materials, jet engines, gas turbines, and nozzles. Preparation Gas atomization method is suitable for…

Single phase tungsten carbide powder has the advantages of good plasticity, high hardness and complete crystallization. It is an important raw material for the preparation of tungsten carbide, and the storage period is 6~8 months. Characteristic Single phase tungsten carbide powder has complete carbonization, good plasticity. It also has high hardness, less structural defects, and complete crystal development. Its internal structure features no W2C phase, few micropores, few grain boundaries, and large crystal grains. Application Single phase tungsten carbide powder…

Nano spherical tungsten carbide powder has spherical particles, good quality, clean, less pollution, small size and narrow size distribution range. It is an important thermal spraying high-tech material and can be prepared by plasma method. Application As a new high-tech material for thermal spraying, nano spherical tungsten carbide powder can meet the requirements of high-performance thermal spraying materials due to its good fluidity and high hardness. Preparation Plasma technology is considered to be the most effective method for obtaining nano…

Subultrafine tungsten carbide powder refers to tungsten carbide powder with a particle size of 0.1~0.3μm. It is a basic raw material for the production of ultra-fine-grained tungsten carbide and can be prepared by phase transfer synthesis. Application Subultrafine tungsten carbide powder is the basic raw material for the production of ultra-fine grain tungsten carbide. With the addition of suitable binders and grain growth inhibitors, it can produce high hardness, high wear resistance and high toughness. The quality of the alloy…