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    • 6. 发明公开
    • 대입열 용접 이음 인성이 우수한 후강판
    • 超大型热输入焊接接头的厚钢板
    • KR1020080034927A
    • 2008-04-22
    • KR1020087003543
    • 2005-08-15
    • 가부시키가이샤 고베 세이코쇼
    • 하타노히토시오카자키요시토미
    • C22C38/04C22C38/00
    • C22C38/14C22C38/001C22C38/002C22C38/005C22C38/02C22C38/04C22C38/06
    • A thick steel plate that even in the application of large heat input welding, excels in toughness of welded joint at-40°C level low temperatures and that satisfies the requirement of strength demanded for welded structures, such as those of ships, marine structures, bridges and building structures. There is provided a thick steel plate excelling in toughness of large heat input welded joint, which consists of a steel composed of 0.01 to 0.15% (in terms of "mass%", applicable hereinafter) C, 0.80% or less (not including 0%) Si, 1.2 to 2.40% Mn, 0. 013 to 0.10% Ti, 0.0015 to 0.005% B, 0.0040 to 0.0100% N, 0.0010 to 0. 005% O, less than 0.010% (not including 0%) Al and the balance essentially of iron and unavoidable impurities, and wherein 60 area% or more of the metal structure thereof consists of bainite.
    • 一种厚钢板,即使采用大型热输入焊接,焊接接头的韧性优于-40℃低温,满足焊接结构要求的要求,如船舶,海洋结构, 桥梁和建筑结构。 提供了一种优质的大型热输入焊接接头的韧性优良的钢板,该钢板由0.01〜0.15%(以质量%计,以下适用)C,0.80%以下(不包括0) %)Si,1.2〜2.40%Mn,0. 013〜0.10%Ti,0.0015〜0.005%B,0.0040〜0.0100%N,0.0010〜005%O,小于0.010%(不含0%)Al和 余量基本上由铁和不可避免的杂质构成,其中60面积%以上的金属组织由贝氏体构成。