Heat treatment process for high chromium grinding ball
at the rate of less than 70 °c / h, the temperature is increased to 650680 °c for 2 hours, at the temperature increasing to 950 °c for 4 hours, forced aircooling, oilcooling, and special quenching liquid cooling respectively, and tempering is carried out at 200 °c or 420 °c according to the ball diameter was 4 hours, 6 hours, 7 hours, out of .
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