讨论煤矿金属机械工作环境的恶劣程度,造成煤矿机械主要腐蚀和摩擦磨损状况和原因,以及给煤矿安全生产造成的危害性和日常维护所产生的巨大经济损失.介绍几种表面处理方法,重点对以下几种技术和工艺进行讨论:(1)煤矿大型减速机、天轮、磨煤机等轴类零件磨损失效,采用电弧喷涂修复.(2)煤矿综采液压支架立柱腐蚀坑,采用电火花溅射修复.(3)煤矿井筒钢结构件长效防腐的应用和发展. Discuss the bad working environment of coal metal machinery, cause the main corrosion, friction and wear status and causes of coal mine machinery, as well as the harm caused to the safety of coal mine and the huge economic loss caused by routine maintenance.We introduce several surface treatment methods, The following technologies and processes are discussed: (1) wear and tear of large-scale reducer, day wheel, coal mill and other shaft parts wear failure, using arc spraying repair. (2) Sputter repair. (3) Application and development of long-term corrosion protection of coal mine shaft steel structure.