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发明授权
CN106011361B 提高焊接性能的Mo-Nb-Ti-Mg钢冶炼方法 失效 - 权利终止 转让

提高焊接性能的Mo-Nb-Ti-Mg钢冶炼方法
摘要：
本发明公开了种提高焊接性能的Mo‑Nb‑Ti‑Mg钢冶炼方法,所述冶炼方法具体流程工艺包括转炉炼钢、LF精炼及连铸工序;所述Mo‑Nb‑Ti‑Mg微合金钢的化学组成及质量百分含量如下:C:0.06~0.08%,Mn:1.25~1.60%,S≤0.010%,P≤0.025%,Si:0.20~0.40%,Als:0.010~0.030%,Mo:0.060~0.080%,Ti:0.010~0.020%,Mg:0.002~0.005%,Nb:0.020~0.035%,余量为Fe和其他不可避免的杂质。本发明采用Al终脱氧,进行Mo‑Nb‑Ti‑Mg微合金化,明显提高了钢的强韧性,本发方法控制简单,生产成本低,可工业化大生产大线能量焊接用钢。
摘要（英）：

The invention discloses a Mo-Nb-Ti-Mg steel smelting method for improving welding performance. The smelting method comprises the specific flowing processes of converter steelmaking, LF refining and continuous casting working procedures. Mo-Nb-Ti-Mg microalloyed steel chemically comprises, in percentage by mass, 0.06-0.08% of C, 1.25-1.60% of Mn, 0.010% or smaller of S, 0.025% or smaller of P, 0.20-0.40% of Si, 0.010-0.030% of Als, 0.060-0.080% of Mo, 0.010-0.020% of Ti, 0.002-0.005% of Mg, 0.020-0.035% of Nb and the balance of Fe and other unavoidable impurities. According to the Mo-Nb-Ti-Mg steel smelting method, Al final deoxidization is adopted for carrying out Mo-Nb-Ti-Mg microalloying, steel obdurability is obviously improved, control is simple, the production cost is low, and industrial mass production of steel for large heat input welding can be achieved.

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