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单体支柱是大同矿务局采煤支护中使用量很大的支护用品,全局循环租赁使用的单体支柱2.2万根左右.每年可修复的数量在1.5～1.6万根,其余的6000多根单柱都做了报废处理.为了保证正常的支护需求,该局每年都要补充购进新单柱5000～6000根,花费资金50多万元.在报废的单柱中,由于油缸内壁严重腐蚀而报废的比例最大约占85%左右.目前,该局单体支柱的大修对油缸的处理办法采用树脂喷涂工艺.这种工艺修复油缸有三个缺陷,一是成品率低,约为85%～90%;二是使用寿命短,仅半年左右;三是不能再次返修.经过多年的摸索和考察,最近大同矿务局技术中心和局器材处一道,引进了单柱油缸用薄壁不锈钢管在油缸内镶套的新工艺,该项技术是山西中通工贸公司高技术公司开发的,该项技术具有以下几方面的优点:1、修复材质优良,采用0.5mm厚含ACr18Ni9Ti和OCr18Ni9等板材,生产出的硬度高、防腐防锈性能强的油缸内衬套.2、修复技术独特,在原有单体支柱的基础上,分别对4个关键部位的抗腐能力及强度性能上作彻底处理.3、修复使用的单柱寿命长.可连续使用5a.
Monolithic pillar Datong Mining Bureau mining support in the use of a large amount of support supplies, the global recycling leasing monomer props used about 22,000.Annable to repair the number of 1.5 to 16,000, the remaining 6000 In order to ensure the normal support needs, the council should be added each year to purchase new single-column 5000 ~ 6000, spend more than 500,000 yuan in the scrap single-column, the cylinder Serious corrosion of the wall and the scrapping of the largest proportion of about 85% .At present, the bureau’s overhaul of single props on the tank approach to resin spraying process.This process has three drawbacks to repair fuel tanks, first, the yield is low, about 85% ~ 90%; Second, the service life is short, only six months or so; Third, can not be reworked. After years of exploration and inspection, Datong Mining Bureau Technology Center and Bureau equipment office recently introduced a single cylinder with thin wall Stainless steel tube inlaid cylinder set of new technology, the technology is Shanxi Zhongtong Industry and Trade Company of high-tech companies to develop, the technology has the following advantages: 1, repair the material quality, with 0.5mm thick with ACr18Ni9Ti and OCr18Ni9 plate, produced by the hard High corrosion resistance and corrosion resistance of the cylinder liner 2. The unique repair technology, based on the original single pillar, respectively, on the four key parts of the corrosion resistance and strength of the performance for thorough treatment .3, repair use The long life of a single column. Can be used continuously 5a.