Sintering temperature and sintering time of cemented carbide die tools: the higher the temperature, the faster the dissolution and diffusion rate, and the more WC dissolved by a certain amount of Co, that is, the faster the migration speed of fine WC to coarse WC. Too high sintering temperature is prone to abnormal grain growth. Extending the sintering time at a lower temperature can also...
Sintering temperature and sintering time of cemented carbide die tools:
The higher the temperature, the faster the dissolution and diffusion rate, and the more WC dissolved by a certain amount of Co, that is, the faster the migration speed of fine WC to coarse WC. Too high sintering temperature is prone to abnormal grain growth. Prolonging the sintering time at a lower temperature can also make the crystal grains grow. It can be seen that the sintering temperature and time can be complementary. The same WC grain size can be obtained by adjusting the temperature or time. The effect of sintering temperature on the growth of tungsten carbide grains. When the average particle size increases, the grain growth decreases rapidly. When the average particle size is 3um or more, the grain growth is not sensitive to the sintering temperature. In a wide sintering temperature range, its particle size or mechanical properties change little .
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