风电齿圈氮化工艺分析及改进  

Analysis and Improvement of Nitriding Process of Wind Power Ring Gear

作　　者：何海军 陈亮 赵维龙 He Haijun;Chen Liang;Zhao Weilong

机构地区：[1]中车戚墅堰机车车辆工艺研究所有限公司,江苏常州213300

出　　处：《机械制造》2023年第9期53-56,共4页Machinery

摘　　要：风电齿圈是风电齿轮箱中的关键部件,氮化是风电齿圈制造中的最后一道工序,氮化中的硬化层深、脆性、组织、变形关系到齿轮精度和强度等关键指标。论述了风电齿圈氮化原理,针对硬度不足、层深不足、渗层硬度不均匀、脆性、氮化物超标、表面氧化等氮化质量特性不合格的原因进行了工艺分析,并对来料清洗、装炉、升温、保温、降温等具体工艺过程进行分析,明确需要改进的内容。通过改进氮化前风电齿圈调质组织、氮化前装炉工艺、氮化中升温速度,提高了风电齿圈氮化质量特性合格率。Wind power ring gear is the key component in wind power gearbox,nitriding is the last process in manufacturing of wind power ring gear,the depth of hardened layer,brittleness,structure and deformation in nitriding are related to key indicators such as gear accuracy and strength.The nitriding principle of wind power ring gear was discussed,and the process analysis was carried out for the reasons for unqualified nitriding quality characteristics such as insufficient hardness,insufficient layer depth,uneven hardness of permeable layer,britleness,excessive nitride,surface oxidation,etc.,and the specific processes such as incoming cleaning,furnace loading,heating,heat preservation,and cooling were analyzed,and the content that needs to be improved was clarified.By improving the conditioning and tempering structure of the wind power ring gear before nitriding,the process of loading furnace before nitriding,and the heating rate during nitriding,the qualification rate of nitriding quality characteristics of wind power ring gear was improved.

关 键 词：风力发电 齿圈 氮化 分析 改进 

分 类 号：TM315[电气工程—电机]