Material bowl: also known as mortar, grinding disc, etc. It is a grinding tool that grinds coarse materials into fine powder.
There are many types of material bowls, including ordinary steel, high manganese steel, wear-resistant alloys, chromium steel, tungsten carbide, etc.
It is a grinder that grinds coarse materials into fine powder. When working, place the material bowl into the slot of the sample grinder or vibration grinder. The machine is an eccentric vibration type, and after working for 3-5 minutes, the material reaches 80-300 mesh, which is directly used for testing. It is currently a widely used method for preparing material samples in laboratories.
The material for making tungsten carbide material bowl is relatively complex. Its outer shell is made of ordinary 45 steel, and the lining is made of tungsten carbide material and embedded into the outer shell because tungsten carbide has high hardness.
The raw material of tungsten carbide lining is sintered from tungsten cobalt powder, and then processed into the finished product by grinding with a diamond grinding wheel. Unlike the hard alloy cutting material used in mechanical processing, its material needs to have high hardness, high wear resistance, and high impact resistance. To adapt to working conditions.
Pure tungsten carbide powder cannot be shaped and requires the addition of cobalt to sinter and form. The higher the content of tungsten carbide, the higher the hardness of the bowl, but the strength decreases and becomes brittle. So we need to choose an appropriate proportion. Although the material bowl has high hardness and good wear resistance, it is still not allowed to be dropped or knocked. Proper use can improve the service life of the material bowl. When loading, the sample should be evenly distributed in the middle of the solid core block, circular ring, and bowl wall as much as possible. Tungsten carbide quality content
The quality content of tungsten carbide is as follows: WC 85.5%、 Co14.5%； Hardness: 87.5 HRA; Density: 14.1g/cm3 Bending strength: 2080Mp Tungsten carbide bowl Precautions for use
To prevent wear and impact, please avoid rotating the tungsten carbide bowl over the crusher. The outer surface of the tungsten carbide bowl is covered with a steel sleeve, which is not afraid of bumps. Use sealing rings to prevent powder from escaping, even if there is slight wear on the bowl during the grinding process and it falls into the powder, it will not cause sample contamination. In order to avoid cross contamination between samples, please use one tungsten carbide bowl for each sample as much as possible. For coarse crushing, chromium steel or manganese steel bowls can be used, and tungsten carbide bowls should be used for those that require no iron element contamination.
How to achieve the ideal crushing effect of the machine during use? If the crushing time is too long, the sample will become sticky and the temperature of the material bowl will increase significantly. If the time is too short, the crushing fineness cannot be achieved. In order to obtain good crushing effect, users can adjust the crushing time according to the vibration frequency of the crusher. The pollution sources adhering to the surface of the material bowl cannot be ignored. Before formally crushing the sample, one or more waste samples should be removed as much as possible.