直縫焊管制造工藝對鋼管拉伸強度影響的研究(下)

Study on Influences by Straight Welding Processes on Welded Pipe Tensile Strength（Part Ⅱ）

摘要: 結(jié)合生產(chǎn)實踐分析了直縫焊管的不同制管工藝（UOE、JCOE、HFW）在制管過程中的應(yīng)力-應(yīng)變狀況;應(yīng)用形變強化和包辛格效應(yīng)理論,研究了拉伸強度在制管過程中的變化規(guī)律,從而為合理制定鋼板（卷）的采購技術(shù)條件、優(yōu)化制管工藝參數(shù)和調(diào)整成品的拉伸強度等提供了理論依據(jù)。

Abstract: Addressing the actual operation circumstances,the co-authors make an analysis concerning the different straight welding processes （UOE,JCOE and HFW）vs stress-strain relationship during the pipe-making process. And the law of tensile strength variation as takes place in the pipe-welding operation is studied by means of the deformation reinforcement and Bauschinger effect theories. The conclusion of the study can be used as the theoretical basis for preparing technical terms for purchase of steel plates（strips）,optimizing pipe manufacturing process parameters and adjusting tensile strength of finished products.