本发明公开了一种提高高钢级管线钢表面质量的生产方法,其化学成分及质量百分比如下:C:0 .040%~0 .080%,Si:0 .10%~0 .30%,Mn:1 .50%~1 .90%,P≤0 .015%,S≤0 .0030%,Ni :0 .10%~0 .30%,Cr:0 .10%~0 .30%,Cu≤0 .20%,Nb:0 .040%~0 .070%,Mo≤0 .15%,V≤0 .01%,Ti:0 .005 %~0 .0 2% ,N≤0 .0050 % ,Ca :0 .001 %~0 .003%,Al:0 .010%~0 .050%,余量为Fe和不可避免的杂质。通过冶炼工艺优化提升铸坯表面质量,调整轧制成型技术提高钢板表面氧化铁皮完整度,提高了产品品质。
The invention discloses a production method for improving the surface quality of high grade pipeline steel, and its chemical composition and mass percentage are as follows: C: 0.040% ~ 0.080%, Si: 0.10% ~ 0.30%, Mn: 1.50% ~ 1.90%, P≤ 0.015%, S≤ 0.0030%, Ni: 0.10% ~ 0.30%, Cr: 0.10% ~ 0.30%, Cu≤0.20%, Nb: 0.040% ~ 0. 0.001 % ~ 0.003%, Al: 0.010% ~ 0.050%, allowance of Fe and unavoidable impurities. The surface quality of the billet is improved by optimizing the smelting process, and the integrity of the oxide sheet on the surface of the steel plate is improved by adjusting the rolling forming technology.