Strengthening and toughening treatment technique for cold-punching mould made of 9SiCr steel
A processing technology, strengthening and toughening technology, applied in the agricultural field, can solve the problems of excessive wear, die chipping, cracking, etc., and achieve the effect of shortening the process time, improving performance, and simple process method.
Inactive Publication Date: 2017-05-31
巴南区伟鹏机械加工厂
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AI Technical Summary
Problems solved by technology
[0003] 9SiCr steel cold stamping die currently adopts the heat treatment process, and the die will cause chipping, brittle fracture, cracking, soft bed or excessive wear and other phenomena prematurely during use.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0013] The invention discloses a 9SiCr steel refrigeration die strengthening and toughening treatment process, comprising the following steps,
[0014] (1) Heat the cold die to 890°C for heating, keep it warm for 60 minutes, and quench the oil;
[0015] (2) Tempering at 400°C, holding time 2h;
[0016] (3) Heat to 880°C and quench the oil;
[0017] (4) Temper at a temperature of 200°C for 2 hours each time.
Embodiment 2
[0019] The invention discloses a 9SiCr steel refrigeration die strengthening and toughening treatment process, comprising the following steps,
[0020] (1) Heat the cold die to 900°C for heating, keep it warm for 60 minutes, and quench the oil;
[0021] (2) Tempering at 420°C, holding time 2h;
[0022] (3) Heat to 870°C and quench the oil;
[0023] (4) Temper at a temperature of 200°C for 2 hours each time.
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The invention discloses a strengthening and toughening treatment technique for a cold-punching mould made of 9SiCr steel. The strengthening and toughening treatment technique comprises the following steps that (1) the cold-punching mould is heated to be 880-900 DEG C for heating, heat preservation is conducted for 60 min, and oil quenching is conducted; (2) tempering is conducted at the temperature of 380-420 DEG C and lasts for 2 h every time; (3) the tempered cold-punching mould is heated to be 860-880 DEG C, and oil quenching is conducted; and (4) tempering is conducted at the temperature of 200 DEG C and lasts for 2 h every time. The strengthening and toughening treatment technique for the cold-punching mould made of the 9SiCr steel is simple in method and capable of improving various properties of the 9SiCr cold-punching mould, and the technique time is shortened.
Description
technical field [0001] The invention relates to the field of agriculture, and specifically belongs to a process for strengthening and toughening a 9SiCr steel refrigeration die. Background technique [0002] 9SiCr steel belongs to high-carbon low-alloy cold work die steel. Since 9SiCr steel contains Si and Cr elements, 9SiCr steel has high hardenability and hardenability. Si element can increase the hardness of steel and play a role in solidification. At the same time, due to the addition of Si alloy, the critical point of the steel is increased, and the amount of residual austenite after quenching is small, which improves the tempering stability of the steel. Si alloy can also refine the carbide of steel, which is beneficial to improve the wear resistance and plastic deformation resistance of steel; Cr can improve the hardenability and wear resistance of steel, and has the ability to enhance the corrosion resistance and oxidation resistance of steel, and Better temper stab...
Claims
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IPC IPC(8): C21D1/19
Inventor 余一祥
Owner 巴南区伟鹏机械加工厂