Precautions For The Use Of Cemented Carbide (Tungsten Steel)

1. The surface state of tungsten steel has a great influence on its bending strength. In the process of manufacturing tungsten steel tools, various cracks on the surface should be prevented, otherwise the bending strength of tungsten steel will be greatly affected.
2. The brittleness of tungsten steel is very high and has nothing to do with temperature. At room temperature, the impact toughness of hardened steel is 1-2 times greater than that of tungsten steel. Therefore, impact compaction of tungsten steel is not allowed when inserting and welding tungsten steel. Do not make them collide or be impacted by each other during transportation.
3. It is very important to understand the linear expansion coefficient of tungsten steel. The linear expansion coefficient of tungsten steel is more than twice that of high-speed steel. When tungsten steel and high-speed steel are welded, due to the difference in linear expansion coefficient between tungsten steel and high-speed steel, when the welded mold is cooled, the stress on the inner and outer layers is different, and an inward tensile stress is formed on the surface. After welding, measures should be taken to relieve the stress, otherwise the tungsten steel will have cracks or desoldering.