Hard alloy holding-up hammer dewaxing sintering method
A technology of cemented carbide anvil and sintering method, which is applied in other manufacturing equipment/tools, turbines, engine components, etc., and can solve problems such as easy cracking
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[0032] Embodiments of the present invention will be described in detail below, intended to be used to illustrate the invention.
[0033] A hard alloy topmer dewaxing sintering method, including the following steps:
[0034] S10: Hydrogen removal wax, including steps S11 to S14, and hold 15 Mbar in the furnace when the temperature is warmed, and remains continuously charged with hydrogen, and the hydrogen flow is 80 l / min;
[0035] S11: Close the furnace door utilizes the air in the hydrogen replacement furnace, after the pressure reaches 15 MBar, starting from room temperature to 250 degrees Celsius, temperature rise rate of 1.25 ° C / min;
[0036] S12: 60 minutes in 250 degrees Celsius;
[0037] S13: A constant speed of 250 degrees Celsius refers to 350 degrees Celsius, temperature rise rate of 0.25 ° C / min;
[0038] S14: Uniformly ramping from 350 degrees Celsius, 450 degrees Celsius, temperature rise rate of 0.3 ° C / min;
[0039] S20: A negative pressure dewaxing, includ...
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