高端特殊钢分切圆刀片热处理工艺研究

Research on Heat Treatment Technology for High-end Special Steel Cutting Circular Blades

对分切圆刀片国内外的工艺技术研究现状进行综述,采用Cr12Mo1V1作为刀片基体材料,针对高端特殊钢分切圆刀片的特性进行热处理工艺研究。结果表明,空冷淬火后得到的分切圆刀片具有优异的力学性能。确定Cr12Mo1V1材料分切圆刀片的最佳热处理工艺为:加热至790℃退火保温2 h,随炉冷却至500℃后出炉空冷;淬火过程分为三个阶段,先升温至600℃保温0.5 h,再升温至850℃保温0.5 h,然后升温至1050℃保温1 h,空冷至室温;一次回火工艺为200℃×2 h,随炉冷却至室温;二次回火工艺为480℃×2 h,随炉冷却至室温。

The research status of the process technology of cutting circular blades both domestically and internationally was reviewed.Cr12Mo1V1 steel was used as the blade matrix material and the heat treatment process was studied based on the characteristics of high-end special steel cutting circular blades.The results showed that the cutting circular blade had better mechanical properties after air-cooled quenching.The optimal heat treatment process for cutting circular blades of Cr12Mo1V1 material was determined as follows:annealing heating to 790℃for 2 h,cooling to 500℃in the furnace,and then air cooling out of the furnace;the quenching process was divided into three stages,first heating to 600℃for 0.5 h,then heating to 850℃for 0.5 h,finally heating to 1050℃for 1 h,and air cool to room temperature;the one time tempering process was 200℃×2 h,cooled to room temperature with the furnace,the secondary tempering process was 480℃×2 h,cooled to room temperature with the furnace.