Heat treatment process for 2CrMo
A technology of process and holding time, applied in the field of 2CrMo heat treatment process, can solve the problems of high production cost, numerous processes, unreasonable process arrangement, etc., and achieve the effect of low manufacturing cost and reasonable process
Inactive Publication Date: 2016-10-05
重庆文力机械有限公司
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AI Technical Summary
Problems solved by technology
[0002] The existing 2CrMo heat treatment process has unreasonable process arrangement, numerous processes, and high requirements for operator experience, which makes the production cost relatively high
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0012] The present invention will be further described below in conjunction with examples:
[0013] A 2CrMo heat treatment process, including the following steps:
[0014] 1) Temperature: 890±10°C
[0015] 2) Time: In general, the holding time is 90±10 minutes. The holding time of complex shaft parts depends on the effective thickness. The furnace loading factor is 1.5, and the tempering holding time is 1-1.5 times longer than the quenching holding time;
[0016] 3), medium: oil;
[0017] 4) Furnace loading method: multi-layer furnace for pin and ferrule parts, single-layer furnace for shaft parts (diameter greater than 80mm);
[0018] 5) Tempering temperature and cooling method: Tempering temperature is generally 610~630°C, after tempering, it is air cooled.
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Abstract
The invention discloses a heat treatment process for 2CrMo. According to the heat treatment process, 1) heat treatment temperature is 890 + / - 10 DEG C; 2) as for heat treatment time, heat preservation time is 90 + / - 10 min under normal conditions, heat preservation time for complex shaft parts depends on the effective thickness of the parts, a charging coefficient is 1.5, and heat preservation time in tempering is 1 to 1.5 times the heat preservation time in quenching; 3) oil is employed as a heat treatment medium; 4) as for a charging manner, parts like pins and ferrules are charged in multiple layers, and shaft parts (with diameters of 80 mm or above) are charged in single layer; and 5) tempering temperature is normally 610 to 630 DEG C, and an air cooling manner is used for cooling out of a furnace after tempering. The process provided by the invention is reasonable in procedure and low in manufacturing cost.
Description
Technical field [0001] The invention relates to a 2CrMo heat treatment process. Background technique [0002] The existing 2CrMo heat treatment process has unreasonable process arrangements and numerous processes, and requires high operator experience, which makes the production cost high. Summary of the invention [0003] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a 2CrMo heat treatment process with reasonable procedures and low manufacturing costs. [0004] In order to achieve the above objective, the present invention provides [0005] A 2CrMo heat treatment process, including the following steps: [0006] 1) Temperature: 890±10°C [0007] 2) Time: In general, the holding time is 90±10 minutes. The holding time of complex shaft parts depends on the effective thickness. The furnace loading factor is 1.5, and the tempering holding time is 1-1.5 times longer than the quenching holding time; [0008] ...
Claims
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IPC IPC(8): C21D6/00C21D1/18
Inventor 翁鸿钟
Owner 重庆文力机械有限公司