低碳齿轮钢带状组织影响因素研究  

Study of Effects on the Band Structure of Low Carbon Steel for Gear

作　　者：冯桂萍[1] Feng Guiping(Technology Center of Fushun Special Steel Co.,Ltd.,Fushun,Liaoning 113001,CHN)

机构地区：[1]抚顺特殊钢股份有限公司技术中心,辽宁抚顺113001

出　　处：《模具制造》2021年第7期86-89,共4页Die & Mould Manufacture

摘　　要：介绍了低碳齿轮钢带状组织形成原因及危害,从热加工工艺﹑热处理方面对带状影响因素进行试验分析,指导生产工艺,并得出结论:铸坯进行适当高温扩散,即控制铸坯均热温度1,180℃~1,220℃,扩散时间≥1h,终轧温度900℃~950℃,带状组织得到明显改善。采用等温正火处理后带状组织可满足≤2.0级。This article introduces the causes and hazards of the bands in low-carbon steel forgear,and conducts an experimental analysis on the effect of thermal processing and heattreatment on bands to guide the mass production process.The results show that proper hightemperature diffusion of the billet is underway,soaking temperature from 1,180~1,200℃,diffusion time≥1h and final rolling temperature from 900~950℃.The band structure isobviously improved.With isothermal normalizing treatment adopted,the band structure can meetthe requirements≤2.0 grade.

关 键 词：带状组织 枝晶偏析 扩散温度 终轧温度 等温正火 

分 类 号：TG162[金属学及工艺—热处理] TG142[金属学及工艺—金属学]