大口径无缝钢管的工艺研究

!!#$$$2001800020021#120006.26.3MgO6.42002-7-11996StudyonTechnologyofHeavyCalibreSeamlessTubeTianjinPipeCo.,LtdChenMingxiangHuLuzhuoLiuYanbinAbstractWiththedevelopmentofnationaleconomy,thefieldofusingheavycaliberseamlesstubeismoreandmoreextensive.Throughstudyonthetechonologicalprocessofmaterials,heatingsystem,pushingspeedandthelessofwallthichnessforhotexpandingheavycaliberseamlesstube,theproductionruleofhotexpandingtubehasbeengraspedbyTianjinPipeCo.,Ltdwhichtolaythefoundationofproductionforheavycalibertube.Keywordshotexpandingseamlesstubeheatingspeedtechnology119911.80%11mm%tφ14066300～310φ140～27325100～110φ273～426835～40φ42615～10100440～470TPCO114～273mm25%100～110tTPCOTPCO22000102001411000!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!23TIANJINMETALLURGY!!#$$$2.1φ288φ298.5φ325φ333φ351φ377φ426φ460φ480φ530φ559φ592φ600φ696φ700mm5.4～30mm2.1.1φ288mmφ333mm2.1.2φ298.5×21mmK55J55API2.1.3φ592mmφ600mmφ696mmφ700mmTPCO2.2EZG-IIB→→→→→→→→→→→33.110%3.220#13.3,2900850800750510152025301/℃/mm24!!#$$$================================2mmmm/min325×91300333×6.31350377×101300426×102280480×102240460×253120600×143140700×1431503.444.14.230MPa24.355.15.230MPa5.3(2002-9-11)1..19952..197419651988#############################################()25