中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2011年
18期
2245-2248
,共4页
再制造%残余应力%应力梯度%组织性能
再製造%殘餘應力%應力梯度%組織性能
재제조%잔여응력%응력제도%조직성능
remanufacture%residual stress%stress gradient%microstructure and property
针对残余应力、组织成分对再制造堆焊层质量的影响，运用仿激光焊技术，采用H13CrMoA焊丝，在变速箱主动轴上整周堆焊不同厚度的焊层，用X射线残余应力分析仪测试堆焊层表面的残余应力，电解抛光堆焊层，分析堆焊层的应力梯度和界面应力，通过X射线能谱仪（EDS）分析堆焊层界面处成分分布，用扫描电镜（SEM）观测其组织形貌，结果表明：堆焊层表面峰值应力为拉应力，且随厚度的增加变化不大；沿垂直于单条焊缝中心线至轴心线方向所测的应力存在一定应力梯度，A0和A1界面处残余拉应力较大，A2界面处为较小残余拉应力；堆焊层界面处组织成分分布较均匀。
針對殘餘應力、組織成分對再製造堆銲層質量的影響，運用倣激光銲技術，採用H13CrMoA銲絲，在變速箱主動軸上整週堆銲不同厚度的銲層，用X射線殘餘應力分析儀測試堆銲層錶麵的殘餘應力，電解拋光堆銲層，分析堆銲層的應力梯度和界麵應力，通過X射線能譜儀（EDS）分析堆銲層界麵處成分分佈，用掃描電鏡（SEM）觀測其組織形貌，結果錶明：堆銲層錶麵峰值應力為拉應力，且隨厚度的增加變化不大；沿垂直于單條銲縫中心線至軸心線方嚮所測的應力存在一定應力梯度，A0和A1界麵處殘餘拉應力較大，A2界麵處為較小殘餘拉應力；堆銲層界麵處組織成分分佈較均勻。
침대잔여응력、조직성분대재제조퇴한층질량적영향，운용방격광한기술，채용H13CrMoA한사，재변속상주동축상정주퇴한불동후도적한층，용X사선잔여응력분석의측시퇴한층표면적잔여응력，전해포광퇴한층，분석퇴한층적응력제도화계면응력，통과X사선능보의（EDS）분석퇴한층계면처성분분포，용소묘전경（SEM）관측기조직형모，결과표명：퇴한층표면봉치응력위랍응력，차수후도적증가변화불대；연수직우단조한봉중심선지축심선방향소측적응력존재일정응력제도，A0화A1계면처잔여랍응력교대，A2계면처위교소잔여랍응력；퇴한층계면처조직성분분포교균균。
According to residual stress and component of organization work on clad layer, the dif- ferent thicknessess welded surfacing layers were prepared on the axles of transmission with H13CrMoA weld wire by means of laser--pro welding technology. The residual stress of the surfacing layers was tested by XRD,the stress gradient and interracial stress of the surfacing layers were meas- ured by electropolishing and XRD, the composition distribution was tested by EDS between overlaying welding and matrix,and the microstructure of the area of interface was analyzed by SEM. The results testify that the peak residual of the surfacing layers is tensile stress, but there is little variation with increase of thickness;the stress gradient of vertical single weld center line to axle center is in exist- ence. The tensile stress of A0 and A1 interface is larger, but A2 is lesser. The component of organization is more uniform between overlaying welding and matrix.
