兩種不同成分X70M管線鋼在HFW焊管中的應(yīng)用
Applications of Two X70M Linepipe-purposed Steels with Different Chemical Compositions to Manufacture of HFW Pipes
-
摘要: 介紹了兩種不同成分X70M鋼級(jí)管線鋼（A鋼和B鋼）在HFW焊管上的應(yīng)用，從化學(xué)成分、沖擊韌性、DWTT性能、對(duì)接性能、焊管整體性能等方面分析了其在HFW制管過程中的性能變化情況。應(yīng)用表明：A鋼在制管后屈服強(qiáng)度和抗拉強(qiáng)度呈現(xiàn)較小的變化，質(zhì)量穩(wěn)定性明顯；B鋼在制管后屈服強(qiáng)度有明顯下降，抗拉強(qiáng)度無(wú)明顯變化，有相對(duì)經(jīng)濟(jì)的制造成本優(yōu)勢(shì)；A鋼和B鋼在強(qiáng)度、韌性和焊接性方面均滿足HFW制管工藝的要求。Abstract: Elaborated here in the paper are the applications of two X70M linepipe-purposed steels with different chemical compositions（i.e.，Steel A and Steel B） to manufacture of HFW pipes.And analyzed are the changes of the properties of the two steels as occurring during the manufacturing process of the HFW pipes，involving chemical composition，impact toughness，DWTT property，butting property，and weld pipe integrity，etc.The application results show that after being turned out as pipes，changes of yield strength and tensile strength of Steel A is just a little，while quality stability thereof is obvious.As for Steel B，its yield strength is decreased obviously after pipeforming，whereas its tensile strength almost remains the original，and thus cost-effectiveness of pipe-making with Steel B is comparatively advantageous.Speaking of strength，toughness and weldability，both steels are up to the requirements as for HFW pipe manufacturing process.
下載: