T10A钢快速球化退火工艺研究
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摘要
以T10A钢为研究对象,通过省去随炉降温过程,采用延长保温时间的方法,探寻节约时间和成本的球化退火工艺。利用光学显微镜和扫描电子显微镜(SEM)观察样品的表面形态,Image pro plus 6.0进行碳化物颗粒统计分析。实验结果表明:Φ13 mm的T10A钢在700℃入炉升温至760℃保温10 min,迅速转移至690℃保温80 min后空冷,可获得碳化物球化程度CS3级组织,心部组织与表层组织的碳化物颗粒均匀性,均高于普通球化退火和等温球化退火,且硬度与等温球化退火一致。此球化退火工艺在保证质量的前提下,碳化物的球化时间极大缩短,可提高生产效率、降低成本、提高能源利用率,拥有较好的工业化应用前景。
In this paper,the spheroid zing annealing process for T10 A steel were studied. The surface morphology of the sample was observed by optical microscope and scanning electron microscope(SEM) and the Image pro plus 6.0 was used for statistical analysis of carbide particles. The results showed that Φ 13 mm T10 A steel at 700 ℃ charging temperature to 760 ℃ heat preservation for 10 min, move quickly to 690 ℃ heat preservation of air cooling after 80 min, can obtain the degree of carbide spheroid zing CS3 level organization. The homogeneity of carbide particles in the core and surface tissues was higher than that in the ordinary spheroid zing annealing and isothermal spheroid zing annealing. The hardness of the steel was consistent with the steel treated by isothermal spheroid zing annealing. The spheroid zing time of carbides was greatly shortened by this process. It is conducive to improving production efficiency, reducing costs and improving energy efficiency therefore it has a good prospect of industrial application.
In this paper,the spheroid zing annealing process for T10 A steel were studied. The surface morphology of the sample was observed by optical microscope and scanning electron microscope(SEM) and the Image pro plus 6.0 was used for statistical analysis of carbide particles. The results showed that Φ 13 mm T10 A steel at 700 ℃ charging temperature to 760 ℃ heat preservation for 10 min, move quickly to 690 ℃ heat preservation of air cooling after 80 min, can obtain the degree of carbide spheroid zing CS3 level organization. The homogeneity of carbide particles in the core and surface tissues was higher than that in the ordinary spheroid zing annealing and isothermal spheroid zing annealing. The hardness of the steel was consistent with the steel treated by isothermal spheroid zing annealing. The spheroid zing time of carbides was greatly shortened by this process. It is conducive to improving production efficiency, reducing costs and improving energy efficiency therefore it has a good prospect of industrial application.
引文
[1] 郑成思,李龙飞.形变-球化退火共析钢的组织和性能[J].金属热处理,2015,40(1):31-34.
[2] 马永杰,热处理工艺方法[M].北京:化学工业出版,2008:74-77.
[3] 夏立芳.金属热处理工艺[M].哈尔滨:哈尔滨工业大学出版社.2012:53-55.
[4] Z.Q.LV,B.WANG,Z.H.WANG,S.H.SUN,et al.Effect of cyclic heat treatments on spheroidizing behavior of cementite in high carbon steel.Materials Science & Engineering,2013:143-148.
[5] K.Z.SHEPELYAKOVSKII,A.N.KUZNETSOV,V.T.GUBENKO,et al.Rapid spheroidizing annealing of roller bearings with induction heating[J].The Heat Treat Doctor,1976:78-80.
[6] 薛刚,余驰斌,鲍思前,等.SKS51合金工具钢的快速球化退火工艺的试验研究[J].特殊钢,2012,33(1):54-56.
[7] 汪东红,杨霄,陈其伟,等.GCr15钢的快速球化退火工艺[J].安徽工业大学学报:自然科学版,2009,26(3):239-242.
[8] 曹双安.GCr15钢快速球化工艺及生命周期评估(LCA)的研究[D].江苏:江苏大学,2005:24-31.
[9] 孙梦龙,佘恺,王啸,等.快速预冷等温球化退火工艺对Cr12MoV模具钢组织和性能的影响[J].热加工工艺,2014,43(2):173-176.
[10] Xiang HUO,Lin GUO,kuangnian HE,Rui HUANG.Effect of spheroidizing annealing time on microstructure and hardness of GCr15 bearing steel[J].Scientific,2012:928-931.
[11] 戴伟.GCr15钢球化退火工艺设计[J].武汉理工大学学报:交通科学与工程版,2002(1):138-140.
[2] 马永杰,热处理工艺方法[M].北京:化学工业出版,2008:74-77.
[3] 夏立芳.金属热处理工艺[M].哈尔滨:哈尔滨工业大学出版社.2012:53-55.
[4] Z.Q.LV,B.WANG,Z.H.WANG,S.H.SUN,et al.Effect of cyclic heat treatments on spheroidizing behavior of cementite in high carbon steel.Materials Science & Engineering,2013:143-148.
[5] K.Z.SHEPELYAKOVSKII,A.N.KUZNETSOV,V.T.GUBENKO,et al.Rapid spheroidizing annealing of roller bearings with induction heating[J].The Heat Treat Doctor,1976:78-80.
[6] 薛刚,余驰斌,鲍思前,等.SKS51合金工具钢的快速球化退火工艺的试验研究[J].特殊钢,2012,33(1):54-56.
[7] 汪东红,杨霄,陈其伟,等.GCr15钢的快速球化退火工艺[J].安徽工业大学学报:自然科学版,2009,26(3):239-242.
[8] 曹双安.GCr15钢快速球化工艺及生命周期评估(LCA)的研究[D].江苏:江苏大学,2005:24-31.
[9] 孙梦龙,佘恺,王啸,等.快速预冷等温球化退火工艺对Cr12MoV模具钢组织和性能的影响[J].热加工工艺,2014,43(2):173-176.
[10] Xiang HUO,Lin GUO,kuangnian HE,Rui HUANG.Effect of spheroidizing annealing time on microstructure and hardness of GCr15 bearing steel[J].Scientific,2012:928-931.
[11] 戴伟.GCr15钢球化退火工艺设计[J].武汉理工大学学报:交通科学与工程版,2002(1):138-140.