论文部分内容阅读
井筒装备是半永久性钢铁构件,服务年限一般在几十年以上。井筒装备由于受到井筒中各种腐蚀介质的作用而发生腐蚀,8~10毫米厚的罐道梁工字钢腹板十年左右就被腐蚀透。更换一次装备,要花费数十万元,消耗百吨钢材,还要影响煤炭产量。常用的涂层防腐方法,最有效的环氧树脂涂层有效保护期也仅有十年左右。因此,对井筒装备来说,仅仅使用涂料防腐显然不能满足要求。
Wellbore equipment is semi-permanent steel components, service life is generally more than a few years. Wellbore equipment corrosion due to various corrosive media in the wellbore, 8 ~ 10 mm thick cantilever beam web is corroded about ten years. Replacement of equipment, to spend hundreds of thousands of yuan, consumes 100 tons of steel, but also affect coal production. Commonly used method of coating corrosion, the most effective effective protection of epoxy coating is only about ten years. Therefore, for the wellbore equipment, the use of paint preservative can not meet the requirements.