WK—4电铲左履带架(图1)在使用十多年后,端部支撑孔严重磨损变形,加工配置的铜套已无法保证电铲的正常工作,铜套更换频繁,致使生产效率大大下降。支撑孔中有一块大约0.015m~2大的凹陷,高低相差20mm。经研究决定对左履带架端部支撑孔进行堆焊加工修复(图2),工程技术人员通过技术分析,制定出了可行的堆焊工艺。 WK-4 shovel left crawler frame (Figure 1) After more than ten years in use, the end of the support hole serious wear and tear deformation, the processing configuration of the copper sleeve has failed to ensure the normal operation of the shovel, copper sleeve replacement frequent, resulting in greatly increased production efficiency decline. Support hole has a 0.015m ~ 2 large depression, the difference between the level of 20mm. After the study decided to support the left crawler frame hole surfacing processing repair (Figure 2), engineering and technical personnel through technical analysis, developed a viable surfacing process.