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七十年代我国从西德蒂森公司进口一批FG 钢材,用于制造液态烃球罐,由于对其性能不够了解,加工焊接方法不当,使用中或多或少的出现延迟裂纹,有的发生穿透裂纹,幸未造成重大事故。因此本文将就 FG 钢材的性能、加工、焊接、热处理及耐硫化氢应力腐蚀等五方面的问题作一探讨。一、StE 系列钢材的性能西德 StE 系列可焊接细晶粒钢己有几十年的使用历史,按西德 AD 规范规定,这种钢材可用于制造压力容器。目前西德国内广泛使用 StE 钢材制造压力容器、球罐、船舶、桥
Seventies China imported a group of FG steel from West Germany Thyssen company for the manufacture of liquid hydrocarbon spherical tank, due to its performance is not enough understanding of improper welding processing, the use of more or less delayed cracks, and some occur Break through the cracks, but fortunately did not cause major accidents. Therefore, this article will FG steel performance, processing, welding, heat treatment and stress corrosion resistance to hydrogen sulfide and other aspects of a discussion. First, the performance of StE series of steel West Germany StE series can be welded fine grain steel has decades of history, according to AD standards in West Germany, this steel can be used to manufacture pressure vessels. West Germany is currently widely used in the manufacture of StE steel pressure vessels, spherical tanks, ships, bridges