航空发动机主轴轴承滚道表面光饰强化处理  

Luster Polish Strengthening for Race Surface of the Mainshaft Bearings of Aeroengine

作　　者：邓四二[1] 滕弘飞[1] 周彦伟[2] 马付建[2] 张志华[2] 

机构地区：[1]大连理工大学机械工程学院,辽宁大连116023 [2]河南科技大学机械工程学院,河南洛阳471003

出　　处：《航空动力学报》2006年第3期545-549,共5页Journal of Aerospace Power

基　　金：国家"十五"重点科技攻关资助(HK-2002-043)

摘　　要：表面改性处理技术是一种提高航空发动机主轴轴承疲劳寿命的有效途径。在表面改性处理理论分析基础上,提出一种新的航空发动机主轴轴承滚道表面强化处理技术(即光饰强化处理)并研制了相应的光饰强化专用设备——离心强化机,试验结果表明:该技术可以有效地提高航空发动机主轴轴承滚道表面硬度,改善滚道表面粗糙度,并在滚道接触表层产生残余压应力,显著地提高航空发动机主轴轴承疲劳寿命和降低疲劳寿命离散性。The technology of surface modification was an efficient way to increase fatigue life of the mainshaft bearing of the aircraft engines. On the basis of theoretical analysis of the surface modification,this paper proposed a new strengthening treatment technology of the raceway surface for the mainshaft bearings （i. e. luster polish strengthening treatment）,and designed a corresponding special machine for luster polish strengthening treatment （the centrifugal strengthening machine）. The experimental results show that the surface hardness of the raceway is increased and the surface roughness is improved and the residual compression stress is produced on the surface of the raceway,the method of luster polish strengthening can increase notably the fatigue life of the mainshaft bearings and decrease the degree of dispersion of fatigue life.

关 键 词：航空 航天推进系统 航空发动机 滚动轴承 光饰强化 表面处理 疲劳寿命 

分 类 号：V232[航空宇航科学与技术—航空宇航推进理论与工程]