采用精密涂层技术大批量修复煤矿支柱液压缸铜陵市机械技术研究所范哲铁道部七０一厂陆春兴全国煤矿每年腐蚀、磨损待修的支柱液压缸，仅单体支柱一种。即达数十万台。多年来曾先后采用过镶套、刷镀、冷压、热喷涂等多项修复技术，效果都难令人满意，一直是煤矿系统一项重... The use of precision coating technology to repair large quantities of coal pillar hydraulic cylinder Tongling City Institute of Machinery Technology Fanzhe 700 Railway Engineering Lu Chunxing Ministry of Railways every year the national coal mines corroded and worn to be repaired prop cylinder, only a single pillar. That is up to hundreds of thousands. Over the years has been used inlay sets, brush plating, cold pressure, thermal spraying and many other repair techniques, the effect is difficult to satisfactory, has been a coal mine system a heavy ...