摘要
Abstract
By means of metallographic inspection, mechanical properties test, groove corrosion sensitivity test and corrosion test at room temperature and on normal pressure for 3Cr high frequency welding steel pipe, the results showed that the metal flow line angle and the fusion line width control were reasonable. Besides, the structure of weld, HAZ and base metal mainly consist of ferrite and bainite, and a little amount of M+A existed in base metal;On the other hand, the mechanics performance test showed that steel pipe is with not only high strength but also good plasticity, and the weld grooving corrosion sensitivity was lower than 1.3;And also, corrosion rate was 0.118 mm/a,the corrosion products were granular distribution on the specimen surface under the condition of the base metal at the normal temperature and pressure corrosion test.关键词
焊管/3Cr钢/高频感应焊接/金属流线/沟槽腐蚀/常温常压腐蚀Key words
welded pipe/3Cr steel/high frequency induction welding/metal flow line/grooving corrosion/corrosion under normal temperature and pressure分类
矿业与冶金
