针对旋挖钻机回转平台在焊接后存在残余应力,以及由于残余应力显现的平台变形问题,采用振动时效进行残余应力消除和均化。通过工艺对比试验,结果表明:基于频谱谐振原理的频谱谐波振动时效处理,能够对回转平台的焊接残余应力起到均化作用,焊接变形得到有效改善,达到设计和使用要求。 Aiming at the residual stress of the rotating platform of rotary drilling rig after welding and the deformation of the platform due to the residual stress, the residual stress is eliminated and homogenized by vibration aging. The results show that the spectrum harmonic vibration aging treatment based on the principle of spectrum resonance can homogenize the welding residual stress of the rotating platform, and the welding deformation can be effectively improved, reaching the requirements of design and application.