Tungsten Carbide Button Quality Control Methods

Tungsten carbide button quality control can be devided into inner quality control and external quality control. Inner quality control includes ingredient and construction. External quality control includes size and surface roughness.

1.Tungsten carbide button size, bending, burr, deformation should be within the standard.

2.Tungsten carbide button should be made under high temperature and long term carbonization. Carbon content should be between 6.14-6.20%. Tungsten carbide grain size is ought to be 2-3um.

3.Tungsten carbide carbon content should be within a certain limit. Magnetic saturation value of tungsten carbide button should be 93%-96%.

4.According to usage of tungsten carbide button, cobalt content should be 6%-16%. Wet grinding period should be within 24 hours. Sintering temperature should be high enough to increase tenacity of tungsten carbide button.

5.Reduce voids and large grain size inside of tungsten carbide button.

6.Use low pressure sintering, make the voids of tungsten carbide button smaller, enhance fracture toughness. 



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