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煤矿井筒装备防腐问题过去一直不被人们重视,因此没有对煤矿井筒装备进行认真细致的防腐处理,大都只涂一道樟丹漆或沥青漆,有的还不作任何防腐处理。安装以后,金属材料很快就发生了锈蚀,一、二年后,漆膜就完全失去了保护作用。据煤炭部调查,煤矿井简装备金属材料的单侧年腐蚀深度为0.2毫米左右。在水质接近中性的地区,一般十几年、至多二十几年,井筒装备
In the past, coal mine shaft equipment anticorrosive problems have not been taken seriously, so there is no careful and meticulous anticorrosive treatment of coal mine shaft equipment, most of them are coated with a single paint or asphalt paint, and some do not make any preservative treatment. After installation, the metal material quickly rust, one or two years later, the film completely lost the protective effect. According to the investigation of the coal ministry, the unilateral corrosion depth of the metal material of the simple coal mine equipment is about 0.2 mm. Nearly neutral in water quality, generally ten years, up to twenty years, wellbore equipment