| 发明名称 | Method of thermomechanical shaping a final product with very high strength and a product produced thereby | ||
| 摘要 | A method of thermomechanical shaping a final product with very high strength including the steps of: providing a coated hot-rolled and/or cold-rolled steel strip or sheet including (all percentages in wt. %): 0.04%<carbon<0.5%, 0.5%<manganese<3.5%, silicon<1.0%, 0.01%<chromium<1%, titanium<0.2%, aluminum<0.2%, phosphorus<0.1%, nitrogen<0.015% N, sulphur<0.05%, boron<0.015%, unavoidable impurities, balance iron, the steel being coated with a zinc alloy coating layer, wherein the zinc alloy includes 0.3-4.0% Mg and 0.05-6.0% Al; optionally at most 0.2% of one or more additional elements; unavoidable impurities; the remainder being zinc; cutting the steel sheet to obtain a steel sheet blank; thermomechanical shaping of the steel sheet blank to a final product with its final properties. | ||
| 申请公布号 | US9481916(B2) | 申请公布日期 | 2016.11.01 |
| 申请号 | US201414231174 | 申请日期 | 2014.03.31 |
| 申请人 | TATA STEEL IJMUIDEN B.V. | 发明人 | Vlot Margot Julia;Van Tol Ronald Theodoor |
| 分类号 | C21D8/00;C23C2/28;B32B15/18;B32B15/01;C21D1/18;C21D6/00;C21D7/13;C21D9/48;C22C18/04;C22C38/04;C22C38/18;C23C2/26 | 主分类号 | C21D8/00 |
| 代理机构 | Vorys, Sater, Seymour and Pease LLP | 代理人 | Vorys, Sater, Seymour and Pease LLP |
| 主权项 | 1. Method of thermomechanical shaping a final product with very high strength comprising the steps of: providing a coated hot-rolled and/or cold-rolled steel strip or sheet comprising (all percentages in wt. %): 0.04%<carbon<0.5%0.5%<manganese<3.5%silicon<1.0%0.01%<chromium<1%titanium<0.2%aluminium<2.0%phosphorus<0.1%nitrogen<0.015%sulphur<0.05%boron<0.015%unavoidable impurities,balance iron,the steel being coated with a zinc alloy coating layer, wherein the zinc alloy consists of 1.6-2.3% Mg and 1.6-2.3% Al; optionally at most 0.2% of one or more additional elements; unavoidable impurities; the remainder being zinc; cutting the coated steel strip or sheet to obtain a steel sheet blank; shaping the blank at ambient temperature in a first deformation step to form an ambient shaped coated steel sheet blank; thermomechanical shaping of the ambient shaped steel sheet blank to a final product with its final properties; wherein the thermomechanical shaping comprises heating the ambient shaped blank to a temperature above Ac1 to at least partially austenitise the ambient shaped blank, shaping the heated blank into a product at elevated temperature in a second deformation step and rapid cooling the shaped heated product to obtain the final product with its final properties. | ||
| 地址 | Ijmuiden NL | ||