风电轴承架残余应力的研究  

A Study on Residual Stress of Principal Axis Bearing Bracket of Wind Power

作　　者：乔达[1] 刘为亮[1] 罗易[1] 

机构地区：[1]东方汽轮机有限公司,四川德阳618000

出　　处：《东方汽轮机》2012年第3期51-56,共6页Dongfang Turbine

摘　　要：铸件在生产过程中,会产生残余应力,残余应力不如气孔、夹砂等缺陷直观,在检测和分析方面存在很大的难度。在零件服役过程中残余应力与外部荷载一起影响零件的使用寿命,具有非常重要的作用。文章研究了球墨铸铁主轴轴承架在铸态、人工时效、振动时效以及抛丸工艺后残余应力的变化,比较了各工艺在消除残余应力效果方面的作用,同时,对有效、经济地选用相关工艺进行了初步的探讨。In the process of producing casting,it will bring about the residual stress.Compared with pore,sand slag and other casting defects,residual stress is not visual.So it is hard to test and analyse.And when machine parts work,the interaction of residual stress with external load is very important.In this paper,the changes of residual stress of principal axis bearing bracket after casting,artificial aging,vibrating stress relief and shot blasting are researched.Meanwhile,the economical efficiency are analysed too.

关 键 词：球墨铸铁 残余应力 人工时效 振动时效 抛丸 

分 类 号：TG404[金属学及工艺—焊接]