论文部分内容阅读
石油工业用钢管管接箍螺纹镀锌,目的系防锈、润滑,与螺纹密封脂配合使用,以提高管体与接箍的密封性能,我厂生产石油工业用钢管已三十多年.管接箍螺纹镀锌,一直采用硫酸盐镀锌,由于均镀能力和深镀能力较差,镀层结晶粗糙,降低了管接箍的防腐性能与密封性能,为了改变这一状况,采用碱性锌酸盐镀锌及钝化工艺,均镀能力、深镀能力好,镀层结晶细致光亮,钝化膜完整,色泽鲜艳,满足了管体与管接箍的防腐与密封的要求.
Oil industry steel pipe fittings threaded galvanized, the purpose of rust, lubrication, and thread sealing grease used in conjunction to improve the sealing performance of the pipe body and the coupling, I plant the production of steel pipe for the oil industry for more than 30 years. Coupling thread galvanized, galvanized has been using sulfate, due to poor both plating capacity and deep plating capacity, coating crystal rough, reducing the corrosion resistance of pipe couplings and sealing performance, in order to change this situation, the use of alkaline zinc Acid salt zinc plating and passivation process, both plating capacity, deep plating capacity, fine plating crystal bright, complete passivation film, bright color, to meet the pipe and pipe coupling anti-corrosion and sealing requirements.