在汽车或其他工程机械修理厂中,对磨损的发动机曲轴有的开始采用熔剂层下堆焊修复轴颈,修复中产生弯曲或扭曲变形。苏联格斯—51发动机曲轴,堆焊后轴的弯曲度可达2毫米,长度减少1.8毫米。这是由于曲轴被整体固定受热和冷却中产生不均匀的应力引起的。若采用不同的装夹方法和工艺规范可改善其变形状况。 In a car or other construction machinery repair shop, some of the worn engine crankshafts are repaired with underfloor surfacing to repair the jig or distortion during repair. Soviet Gus-51 engine crankshaft, after welding shaft bending up to 2 mm, reducing the length of 1.8 mm. This is due to the fact that the crankshaft is heated and cooled as a whole to produce uneven stresses. If using different clamping methods and process specifications can improve its deformation.