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首页> 外国专利> STEEL PLATE FOR MOLTEN ZINC BATH EQUIPMENT EXCELLENT IN RESISTANCE TO MOLTEN ZINC CORROSION AND RESISTANCE TO ZINC-INDUCED CRACKING AND METHOD FOR PRODUCING THE SAME

STEEL PLATE FOR MOLTEN ZINC BATH EQUIPMENT EXCELLENT IN RESISTANCE TO MOLTEN ZINC CORROSION AND RESISTANCE TO ZINC-INDUCED CRACKING AND METHOD FOR PRODUCING THE SAME

机译：出色的耐锌腐蚀液和耐锌诱导开裂性能优良的镀锌浴设备用钢板及其制造方法

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PROBLEM TO BE SOLVED: To provide a steel plate for molten zinc bath equipment excellent in resistance to molten zinc corrosion and resistance to zinc-induced cracking, which has strength, toughness and weldability required for a steel for a welded structure, has excellent corrosion resistance in terms of corrosion caused by molten zinc and is less prone to cracking induced by molten zinc, and to provide a method for producing the same.;SOLUTION: A steel plate for molten zinc bath equipment comprises, by mass, 0.10-0.30% C, ≤0.05% Si, 0.20-2.0% Mn, ≤0.015% P, ≤0.030% S, ≤0.070% Al and the balance being Fe and unavoidable impurities. In a cross section of a plate thickness parallel to the rolling direction and perpendicular to a plate surface, a metallic structure within a surface layer extending from the plate surface to t/4 of the plate thickness (t) direction is a mixed structure comprising a ferrite phase and a pearlite phase, and crystal grains in the ferrite phase has an average aspect ratio of 2 or more.;COPYRIGHT: (C)2013,JPO&INPIT
机译：要解决的问题：提供一种用于熔融锌浴设备的钢板，该钢板具有优异的抗熔融锌腐蚀性和抗锌诱发的开裂性，该钢板具有焊接结构用钢所需的强度，韧性和可焊性，具有优异的耐腐蚀性就熔融锌引起的腐蚀而言，它不易产生熔融锌引起的开裂，并提供一种生产方法。解决方案：熔融锌浴设备用钢板的质量百分比为0.10-0.30％ ，≤0.05％的Si，0.20-2.0％的Mn，≤0.015％的P，≤0.030％的S，≤0.070％的Al，余量为Fe和不可避免的杂质。在平行于轧制方向并且垂直于板表面的板厚度的横截面中，从板表面延伸至板厚度（t）方向的t / 4的表面层内的金属结构是包括以下成分的混合结构：铁素体相和珠光体相，铁素体相中的晶粒平均长径比为2或更高。; COPYRIGHT：（C）2013，JPO＆INPIT

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