热张力减径对电阻焊油井套管沟槽腐蚀性能的影响  

Effect of Thermal Tension Reduction Process on Grooving Corrosion Performance of Electric Resistance Welded Oil Well Casing

作　　者：贺飞[1] 尚成嘉[1] 张峰[2] 毕宗岳[2] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]宝鸡石油钢管有限公司,宝鸡721008

出　　处：《腐蚀与防护》2012年第10期872-875,共4页Corrosion & Protection

摘　　要：采用恒电位极化法测定了电阻焊油井套管经过模拟热张力减径处理试验后的沟槽腐蚀性能。结果表明,电阻焊管母材和焊缝区的微观组织差异及焊缝区的应力是电阻焊管沟槽腐蚀的主要原因。热张力减径可以显著提高电阻焊油井套管的抗沟槽腐蚀性能,从而扩大其在石油钻采领域的应用。The grooving corrosion performance of electric resistance welded （ERW） oil well casing after simulation of thermal tension reduction process was investigated by potentiostatic polarization method. It was found that the microstructure difference between base metal and weld zone and the stress in weld zone were two main causes of grooving corrosion of ERW tube. The thermal tension reduction process can considerably improve the grooving corrosion resistibility of ERW oil well casing. And the ERW tube can be used more in the field of oil drilling.

关 键 词：ERW焊管 沟槽腐蚀 热张力减径工艺 

分 类 号：TG172[金属学及工艺—金属表面处理]