25MnVK钢零保温淬火工艺研究  

Study on Zero Time Holding Quenching Technique of 25MnVK Steel

作　　者：王冠[1] 刘玲[2] 郑喜平 金晨 

机构地区：[1]河南理工大学经济管理学院,河南焦作454003 [2]安阳工学院机械工程学院,河南安阳455000 [3]林州重机集团股份有限公司技术处,河南安阳456550 [4]江苏振达钢管集团有限公司技术部,江苏无锡214046

出　　处：《热加工工艺》2014年第18期172-174,共3页Hot Working Technology

基　　金：2012年河南省哲学社会科学委托项目(2012-guihua)

摘　　要：对25MnVK的零保温淬火工艺进行了研究,并对显微组织和力学性能进行了分析。结果表明：在880~940℃,硬度、强度、伸长率和耐磨性随淬火温度的升高而增加,超过940℃则随淬火温度的升高而降低,在940℃淬火获得最佳力学性能,零保温淬火后的显微组织是细小的板条马氏体。在120 N、300 r/min、1200 s的试验条件下,940℃淬火后的试样磨损质量损失最小,具有优良的抗磨损性能。The zero time holding quenching process of 25 MnVK was studied. The microstructure and mechanical properties of the steel were analyzed. The results show that, in the range of 880 ℃-940 ℃, the hardness, strength, elongation and wear resistance of 25 MnVK steel rise along with the increase of quenching temperature, and then begin to fall down above 940 ℃. The best mechanical properties of the steel can be obtained by quenching at 940 ℃. The microstructure of the steel is the finer lath martensite after zero time holding quenching. Under 120 N, 300 r/min,1200 s experimental conditions, the wear mass loss of the sample after quenching at 940 ℃ is least, with excellent wear resistance.

关 键 词：零保温 25MnVK钢 强度 耐磨性 

分 类 号：TG156.3[金属学及工艺—热处理]