液压支架立柱维修与再制造技术

Maintenance and remanufacturing technology of column of roof support

分析了综采工作面液压支架立柱工况的特点及失效形式,介绍了立柱外缸、中缸及活柱的维修和再制造技术,通过采用熔覆铜合金对超差的内孔表面进行再制造,采用不锈钢熔覆技术修复腐蚀的外缸及中缸缸口,利用激光熔覆再制造技术代替电镀工艺,提升了立柱的性能,延长了其使用寿命。

The paper analyzed the characteristics and failure modes of the column of the roof support in the full-mechanized mining face, and introduced the maintenance and remanufacturing technology of the main components of the column such as the outer cylinder, the middle cylinder and the piston rod assembly. The copper alloy was cladded onto the inner surface of the hole for remanufacture, and stainless steel cladding technology was applied to repair the corroded mouth of the outer cylinder and the middle cylinder. Replacement of electroplating technology with laser cladding remanufacture technology enhanced the performance of the column and prolonged its service life.