螺旋焊管殘余應(yīng)力的計(jì)算
Calculation of Residual Stress of Spiral Welded Pipe
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摘要: 殘余應(yīng)力對(duì)螺旋焊管質(zhì)量有顯著影響。通過推導(dǎo),得出了螺旋焊管殘余應(yīng)力與切口張開量的數(shù)學(xué)關(guān)系式,制管廠家通過采用控制切口張開量以達(dá)到控制焊管殘余應(yīng)力的作法是切實(shí)可行的,對(duì)焊管殘余應(yīng)力內(nèi)控標(biāo)準(zhǔn)的制定有一定的參考價(jià)值。Abstract: The residual stress imposes considerable negative influence on quality of the spiral welded pipe. Based on relevant deduction, the mathematical relational expression between the spiral welded pipe residual stress and the cut opening amount is set up. It is concluded that it is practical for the pipe makers to control the said residual stress by means of controlling the cut opening amount. The paper is helpful to establishing company criteria governing spiral welded pipe residual stress.
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