北京煤矿机械厂是生产液压支架和单体支柱的专业厂。支架液压系统中的缸、柱管内孔氧化皮的存在,严重影响液压系统清洁度,并且容易划伤密封件。过去,对缸、柱管内孔的锈蚀和氧化皮,一直采用酸洗和加工去除方法。酸洗除锈法会产生大量的酸雾,放出有害气体,严重污染环境,危害工人身体健康。另外常温酸洗工艺不能有效地去除工件热处理后的氧化皮。为了保证产品质量,该厂曾采取镗床镗内孔的方法去除氧化皮,此法不仅占用加 Beijing Coal Mine Machinery Factory is a professional production of hydraulic support and single props plant. Scaffolding hydraulic system cylinder, column tube hole oxide skin, the serious impact on the hydraulic system cleanliness, and easy to scratch the seal. In the past, on the cylinder, column tube hole corrosion and scale, has been using pickling and processing methods. Pickling rust method will produce a lot of acid mist, emit harmful gases, seriously pollute the environment, endanger the health of workers. Another room temperature pickling process can not effectively remove the workpiece after the heat treatment of the oxide scale. In order to ensure product quality, the factory had taken boring boring bore hole method to remove the oxide, this method not only take up