超低氧重载渗碳齿轮钢生产工艺的开发  

Development of production process of ultra-low oxygen heavy duty carburized gear steel

作　　者：赵龙 杨吟野 何东 王力 黄侃 周朝刚 ZHAO Long;YANG Yinye;HE Dong;WANG Li;HUANG Kan;ZHOU Chaogang(Chongqing Gear Box Co.,Ltd.,Chongqing 402260,China;College of Materials Science and Engineering,Guizhou Minzu University,Guiyang 550025,China;Anhui Linhong Heavy Industry Technology Co.,Ltd.,Xuancheng 242115,China;College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,China)

机构地区：[1]重庆齿轮箱有限责任公司,重庆402260 [2]贵州民族大学材料科学与工程学院,贵州贵阳550025 [3]安徽林洪重工科技有限公司,安徽宣城242115 [4]华北理工大学冶金与能源学院,河北唐山063210

出　　处：《炼钢》2025年第2期92-98,共7页Steelmaking

摘　　要：为了降低重载渗碳齿轮钢中的氧含量,提高齿轮材料的疲劳寿命,对锻件成品氧含量进行分析,发现原生产工艺无法满足客户要求,为此开发出LF精炼换渣加双VD真空精炼操作工艺,并利用在线定氧仪、Aspex夹杂物全自动扫描分析仪、氧氮氢分析仪以及XRF荧光分析仪对优化前后工艺试验结果进行对比分析。结果表明,工艺优化后可以使锻件氧质量分数降到6×10^(-6),并使锻件最大夹杂物尺寸检测值从137.5μm下降到51.2μm,成功满足客户需求,为“EBT+LF+VD+IC”生产工艺冶炼超低氧重载渗碳齿轮钢提供技术指导。In order to reduce the oxygen content in heavy duty carburized gear steel and improve the fatigue life of gear materials,the oxygen content of finished forging was analyzed,and it was found that the ordinary production process couldn t meet the requirements of customers.Therefore,the LF refining slag changing plus double VD vacuum refining operation process was developed,and the experimental results before and after optimization were compared by using on-line oxygen meter,Aspexautomatic inclusion scanninganalyzer,oxygen nitrogen hydrogen analyzer and XRF fluorescence analyzer.The research shows that the optimized process can reduce the oxygen mass fraction of the forging to 6×10^(-6),and reduce the test value of the maximum inclusion size in the steel from 137.5μm to 51.2μm,successfully meet the needs of customers,and provide technical guidance for EBT+LF+VD+IC production process to produce ultra-low oxygen heavy duty carburized gear steel.

关 键 词：夹杂物 氧含量 齿轮钢 生产工艺 

分 类 号：TF762[冶金工程—钢铁冶金]