首页> 外国专利> A STEEL FOR GRADE R6 OFFSHORE MOORING CHAIN WITH HIGH STRENGTH AND HIGH TOUGHNESS AND ITS CHAIN USE IN ANCHORING AND MOORING FLOATING BODIES WITH CATHODIC PROTECTION

A STEEL FOR GRADE R6 OFFSHORE MOORING CHAIN WITH HIGH STRENGTH AND HIGH TOUGHNESS AND ITS CHAIN USE IN ANCHORING AND MOORING FLOATING BODIES WITH CATHODIC PROTECTION

机译：R6等级钢筋的钢材，具有高强度和高韧性及其链条的锚固和系泊浮体，具有阴极保护

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摘要

The present application relates to a steel for grade R6 offshore mooring chain for use in anchoring and mooring floating bodies with cathodic protection: the chemical composition are C 0.18˜0.24%, N 0.006˜0.024, P 0.005˜0.025, S≤0.005, Si 0.15˜0.35, Mn 0.20˜0.40, Cr 1.40˜2.60, Ni 0.80˜3.20, Mo 0.35˜0.75, Cu≤0.50, Al≤0.02, Ti≤0.005, V 0.04˜0.12, Nb 0.02˜0.05, Ca 0.0005˜0.004, O≤0.0015, H≤0.00015, the balance is Fe: the total content of alloy ΣM=(Si+Mn+Cr+Ni+Mo+Cu), 3.4<ΣM≤6.8; the total content of microalloy ΣMM=(Ti+Al+Nb+V), 0.065≤ΣMM≤0.194. The corrosion potential is adjusted to prevent hydrogen embrittlement caused by cathodic overprotection on the basic premise of maintaining the strength, toughness and low corrosion rate of the steel. Where V is only used for strengthening, and the content of N in VCN is increased, especially for the increase of the temperature for chain quenching to make M3C, M2C and VCN fully dissolved in solid solution and fully precipitated in tempering, which improves the precipitation strengthening effect.

机译：本申请涉及一种用于级R6级离岸系泊链的钢，用于锚固和系泊浮体具有阴极保护：化学成分为C 0.18〜0.024％，N 0.006~0.024，P 0.005~0.025，S≤0.005，Si 0.15~0.35，Mn 0.20〜0.40，Cr 1.40~2.60，Ni 0.80〜3.20，Mo 0.35〜0.75，Cu≤0.50，al≤0.02，Ti≤0.005，v 0.04〜0.12，Nb 0.02〜0.05，CA 0.0005〜0.004 ，o≤0.0015，h≤0.00015，平衡是Fe：合金σm=（Si + Mn + Cr + Ni + Mo + Cu）的总含量，3.4 <σm≤6.8;微基Σmm=（Ti + Al + Nb + V），0.065≤σmm≤0.194的总含量。调节腐蚀电位以防止阴极过度保护引起的氢脆对钢的强度，韧性和低腐蚀速率的基本前提引起的。其中V仅用于加强，并且VCN中的n含量增加，特别是对于将M3C，M2C和VCN完全溶解在固溶体中并在回火中完全沉淀的温度增加，这改善了沉淀加强效果。

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公开/公告号US2021285069A1

专利类型
公开/公告日2021-09-16

原文格式PDF
申请/专利权人 JIANGYIN XINGCHENG SPECIAL STEEL WORKS CO. LTD;
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申请/专利号US201917258174
发明设计人 JIANG YIN;XUEJUN BAO;ZHENWEI LIU;YUN BAI;XIAOHONG XU;MING ZHANG;HAIDONG FAN;YAO LI;HONGLI LI;DE CHEN;GUORONG ZHU;GUOREN HU;TIEHUA YAO;QIUHAO GU;YONG CUI;ERXIN HUANG;XUEWEN LIU;LI LIANGLIANG;
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申请日2019-05-16
分类号C21D9/50;C22C38/50;C22C38/48;C22C38/46;C22C38/44;C22C38/42;C22C38/06;C22C38/04;C22C38/02;C22C38;C21D9;C21D6;
国家 US
入库时间 2022-08-24 21:05:24

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