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    Steel plate resistant to zinc-induced crack and manufacturing method therefor
    11.
    发明授权
    Steel plate resistant to zinc-induced crack and manufacturing method therefor 有权

    公开(公告)号：US10093999B2

    公开(公告)日：2018-10-09

    申请号：US14782965

    申请日：2014-03-05

    申请人： BAOSHAN IRON & STEEL CO., LTD.

    发明人： Zicheng Liu ,  Yong Wu ,  Xianju Li

    IPC分类号： C21D9/46 ,  C22C38/14 ,  B22D11/00 ,  C21D8/02 ,  C21D9/42 ,  C21D6/00 ,  C22C33/04 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/08 ,  C22C38/12 ,  C22C38/16 ,  C23C26/00

    摘要： The invention discloses a steel plate resistant to zinc-induced crack and a manufacturing method therefor. A low-alloy steel subjected to low C-ultra low Si-high Mn-low Al—(Ti+Nb) microalloying treatment is taken as a basis; the Al content in the steel is appropriately reduced; the conditions are controlled so that Mn/C≥15, [(% Mn)+0.75(% Mo)]×(% C)≤0.16, Nb/Ti≥1.8 and Ti/N is between 1.50 and 3.40, CEZ≤0.44% and the B content is ≤2 ppm, Ni/Cu≥1.50; a Ca treatment is performed and the Ca/S ratio is controlled between 1.0 and 3.0, with (% Ca)×(% S)0.28≤1.0×10−3; and a TMCP process is optimized, so that a finished steel plate has a micro-structure of ferrite+bainite colonies which are tiny and dispersedly distributed, with an average grain size of not greater than 10 μm, has homogeneous and excellent mechanical properties, excellent weldability and zinc-induced crack resistance, and is thus especially suitable as a zinc-spray coated corrosion-resistant steel plate for marine structures, a zinc-spray corrosion-resistant steel plate for extra-high voltage power transmission structures, a zinc-spray coated corrosion-resistant steel plate for coast bridge structures, and the like.

    Process for the production of thick armour plates
    14.
    发明授权
    Process for the production of thick armour plates 失效
    粗装甲板生产工艺

    公开(公告)号：US5458704A

    公开(公告)日：1995-10-17

    申请号：US152034

    申请日：1993-11-12

    申请人： Jochen Bobbert ,  Rudolf Kawalla ,  Hans Pircher ,  Gerd Sussek ,  Gunter Weihrauch

    发明人： Jochen Bobbert ,  Rudolf Kawalla ,  Hans Pircher ,  Gerd Sussek ,  Gunter Weihrauch

    IPC分类号： C21D6/00 ,  C21D8/02 ,  C21D9/42 ,  C22C38/44 ,  C21D7/13

    CPC分类号： C21D9/42 ,  C21D8/0226 ,  C22C38/44 ,  C21D6/001 ,  C21D8/021 ,  C21D8/0263 ,  Y02P10/212

    摘要： The invention relates to a process for the production of very hard armour plates from steel slabs, wherein the slabs are hot rolled to a final thickness above 50 mm and then hardened and possibly tempered. The characterizing feature of the invention is that a continuously cast slab is produced from a steel having0.25 to 0.32% C0.05 to 0 75% Si0.10 to 1.50% Mn0.90 to 2.00% Cr0.10 to 0.70% Mo1 20 to 4 50% Ni0.01 to 0.08% Almax 0.015% Pmax 0.005% Smax 0.012% Nresidue Fe, including usual impurities,the slab then being heated to a temperature of 1150.degree. C. or higher and heated through, whereafter following cooling in air and by the spraying of its two wide sides with pressurized water, the slab is hot rolled with a surface temperature in the range of 1050.degree. to 900.degree. C. in shaping passes having an individual deformation of .epsilon..sub.h >0.1 and with a shape factor SF>0.40 to the final thickness.

    摘要翻译： 本发明涉及一种用于从钢板生产非常硬的装甲板的方法，其中将板坯热轧至最终厚度大于50mm，然后硬化并可能回火。 本发明的特征在于，连续铸造的板坯由具有0.25〜0.32％的C 0.05〜0 75％的Si 0.10〜1.50％的Mn，0.90〜2.00％的Cr，0.10〜0.70％的Mo 1，20〜40％的钢， Ni 0.01〜0.08％Al最大0.015％P最大0.005％S最大0.012％N残渣Fe，包括通常的杂质，然后将板坯加热至1150℃以上的温度，然后通过加热，然后在空气中冷却后， 通过用加压水喷射其两个宽边，将板坯在1050℃至900℃的范围内热轧，其形状通过具有εh> 0.1的单个变形并且具有形状因子SF > 0.40至最终厚度。