新型N80焊管耐蚀性能研究  

Study on Corrosion Resistance of New N80 Welded Pipe

作　　者：赵西岐[1,2,3] 张骁勇 苑清英[2,3] 任永峰[2,3] 王涛 黄晓辉[2,3] 张歌 李雪鹏[2,3] ZHAO Xi-qi;ZHANG Xiao-yong;YUAN Qing-ying;REN Yong-feng;WANG Tao;HUANG Xiao-hui;ZHANG Ge;LI Xue-peng(School of Materials Science and Engineering, Xi＇ an University of Petroleum, Xi＇ an 710065, China;Baoji Petroleum Steel Pipe Co., Ltd. Research Institute of Steel Pipe, Baoji 721008, China;National Oil and Gas Pipeline Engineering Technology Research Center, Baoji 721008, China)

机构地区：[1]西安石油大学材料科学与工程学院,陕西西安710065 [2]宝鸡石油钢管有限责任公司钢管研究院,陕西宝鸡721008 [3]国家石油天然气管材工程技术研究中心,陕西宝鸡721008

出　　处：《全面腐蚀控制》2017年第12期63-68,共6页Total Corrosion Control

基　　金：国家科技支撑计划(2011BAE25B03):高强度耐腐蚀石油天然气集输与输送用管线钢生产技术

摘　　要：为评价"HFW焊管+热张力减径+热处理"(简称SEW工艺)工艺新型N80焊管耐蚀性能,对新型N80焊管和N80无缝管进行高温高压腐蚀速率试验、电化学试验、沟槽腐蚀试验等研究。检测结果:新型N80焊管和常规N80无缝管高温高压均匀腐蚀速率分别为1.59mm/a和1.62mm/a;新型N80焊管对沟槽腐蚀不敏感,沟槽腐蚀敏感系数为1.132,小于标准要求的1.3。电化学试验表明两种管材的耐蚀性能基本相近;结果表明新型N80焊管与常规N80无缝管耐蚀性相当,为新型N80焊管的推广提供理论依据。For the evaluation of the“HFW pipe ＋ hot stretch reducing ＋ heat treatment process （SEW process） model N80 pipe corrosion resistance of high temperature and high pressure, corrosion rate test, electrochemical test, groove corrosion test of new N80 and N80 seamless pipe. Results： the new N80 pipe and conventional N80 seamless pipe in high temperature and high corrosion rate were 1.59mm/a and 1.62mm/a; the new N80 pipe is not sensitive to the groove corrosion, corrosion sensitive coef？cient of groove is 1.132, less than the standard requirements of 1.3. Electrochemical tests show that the corrosion resistance and performance of the two kinds of pipes are basically similar. The results show that the corrosion resistance of the new N80 welded pipe is comparable to that of the conventional N80 seamless tube, which provides a theoretical basis for the popularization of the new N80 welded pipe.

关 键 词：N80焊管 二氧化碳腐蚀 沟槽腐蚀 高温高压 电化学 

分 类 号：TG172.8[金属学及工艺—金属表面处理]