C90级耐腐蚀HFW套管性能试验研究  

Study on the Performance of C90 Grade Corrosion Resistance HFW Casing

作　　者：何石磊[1,2] 张峰[1,2] 毕宗岳[1,2] 白鹤[1,2] 李远征[1,2] 王涛[1,2] 李周波[1,2] 王军[1,2] 党涛[1,2] 张选龙[2] 

机构地区：[1]国家石油天然气管材工程技术研究中心,陕西宝鸡721008 [2]宝鸡石油钢管有限责任公司,陕西宝鸡721008

出　　处：《焊管》2014年第8期5-11,共7页Welded Pipe and Tube

基　　金：国家科技支撑计划课题(课题编号:2011BAE25B04)

摘　　要：从强韧性、显微组织、残余应力、沟槽腐蚀性能、抗氢致开裂性能、抗H2S应力腐蚀性能等方面,分析研究了采用"HFW高频焊接+热张力减径+全管体调质热处理"工艺开发的C90级耐腐蚀HFW套管产品的性能。结果表明,采用该工艺生产的C90级耐腐蚀套管屈服强度、拉伸强度均满足API 5CT标准对C90套管的要求,母材和焊缝的横向冲击功均大于100 J,且冲击功差异不大,残余应力小于80 MPa,并且对焊缝沟槽腐蚀和氢致开裂腐蚀均不敏感;在加载80%和85%名义屈服强度应力下,H2S应力腐蚀720 h后试样不开裂,说明该工艺生产的C90级耐腐蚀HFW套管具有良好的综合力学性能和抗H2S腐蚀性能。The properties of C90 grade corrosion resistance HFW （high-frequency welding） casing, by adopting HFW＋ hot stretch reducing＋quenched-tempered heat treatment for the pipe full body process were analyzed and researched from several aspects, such as properties of strength and toughness, microstructure, residual stress, grooving corrosion, hydrogen induced cracking resistance, H2S stress corrosion resistance. The results showed that the yield and tensile strength of the C90 grade HFW casing produced by the above process can meet the requirements of API 5CT standard for C90 grade casing. The transverse impact toughness of base metal and weld both are high than 100 J, the differences of impact toughness are less, and the residual stress is less than 80 MPa, and the casing is not sensitive to grooving corrosion and hydrogen induced cracking corrosion. Under the load of 80%and 85%nominal yield strength stress, the specimen of H2S stress corrosion does not crack after 720 h, the result indicated that show that C90 grade HFW casing produced by the above process is with good comprehensive mechanical properties and H2S corrosion resistance performance.

关 键 词：HFW套管 沟槽腐蚀 氢致开裂 应力腐蚀 残余应力 

分 类 号：TG113.231[金属学及工艺—物理冶金]