Ngokwendlela yokukhiqiza, amapayipi ensimbi angahlukaniswa abe yizigaba ezimbili: amapayipi ensimbi angenamthungo namapayipi ensimbi ashiselwe.Phakathi kwawo, amapayipi ensimbi e-ERW awuhlobo oluyinhloko lwamapayipi ensimbi ashiselwe.Namuhla, sikhuluma kakhulu ngezinhlobo ezimbili zamapayipi ensimbi asetshenziswa njenge-casing materials: amapayipi angenamthungo namapayipi e-ERW.
Ipayipi le-casing elingenamthungo - ipayipi le-casing elenziwe ngepayipi lensimbi elingenamthungo;Ipayipi lensimbi elingenamthungo lisho ipayipi lensimbi elenziwe ngezindlela ezine zokuginqika okushisayo, ukugoqa okubandayo, ukudweba okushisayo nokudweba okubandayo.Umzimba wepayipi ngokwawo awunawo ama-welds.
Umzimba we-ERW – ERW (Electric Resistant Weld) ipayipi lensimbi elenziwe ngepayipi elishiselwe kagesi libhekisela epayipini elishiselwe longitudinal elenziwe ngokushisela ukumelana nemvamisa ephezulu.Amashidi ensimbi eluhlaza (amakhoyili) amapayipi ashiselwe ngogesi enziwa ngensimbi enekhabhoni ephansi ye-alloy egoqwe yi-TMCP (inqubo elawulwa yi-thermomechanical).
1. Ukubekezelela kwe-OD ipayipi lensimbi elingenamthungo: kusetshenziswa inqubo yokwenza i-hot-rolled, ukusika kuqedwa cishe ku-8000°C.Ukwakheka kwempahla eluhlaza, izimo zokupholisa, nesimo sokupholisa somqulu kunethonya elikhulu kububanzi bayo obungaphandle, ngakho-ke kunzima ukulawula ngokunembile ububanzi bangaphandle, futhi ububanzi bokuguquguquka bukhulu.Ipayipi lensimbi le-ERW: lakhiwe ngokugoba okubandayo, futhi ububanzi balo buncishiswe ngo-0.6%.Izinga lokushisa lenqubo ngokuyisisekelo lihlala lihlala ekamelweni lokushisa, ngakho ububanzi bangaphandle bulawulwa ngokunembile, futhi ububanzi bokuguquguquka buncane, okuvumela ukuqedwa kwamabhakede esikhumba esimnyama;
2. Ipayipi lensimbi elingenamthungo elinokubekezelela ukushuba kodonga: Ikhiqizwa ngensimbi eyindilinga enezimbobo, futhi ukuchezuka kokuqina kodonga kukhulu.Ukuginqika okushisayo okulandelayo kungaqeda kancane ukungalingani kodonga, kodwa imishini yesimanjemanje ingakulawula kuphela ngaphakathi kuka-±5~10%t.Ipayipi lensimbi le-ERW: Uma usebenzisa ikhoyili egoqiwe eshisayo njengempahla eluhlaza, ukubekezelela ukujiya kokuginqika okushisayo kwesimanje kungalawulwa ngaphakathi kuka-0.05mm.
3. Amaphutha endaweni yangaphandle ye-workpiece esetshenziselwa ukubonakala kwepayipi yensimbi engenamthungo ayikwazi ukuqedwa enqubweni yokugoqa eshisayo, kodwa ingapholishwa kuphela ngemva kokuba umkhiqizo oqediwe usuqediwe, ukushaywa kwe-helical okushiywe ngemva kokubhoboza kungaqedwa kuphela ingxenye yenqubo yokunciphisa izindonga.Ipayipi lensimbi le-ERW lenziwa ngekhoyili egoqiwe eshisayo njengempahla eluhlaza.Izinga eliphezulu lekhoyili liyafana nekhwalithi yangaphezulu yepayipi lensimbi ye-ERW.Izinga eliphezulu lamakhoyili ashisayo kulula ukuwalawula futhi asezingeni eliphezulu.Ngakho-ke, izinga eliphezulu lepayipi lensimbi le-ERW lingcono kakhulu kunepayipi lensimbi elingenamthungo.
4. Ipayipi lensimbi engenamthungo: usebenzisa inqubo yokugoqa eshisayo.Ukwakhiwa kwempahla eluhlaza yepayipi yensimbi, izimo zokupholisa kanye nesimo sokupholisa somqulu kunethonya elikhulu kububanzi bayo obungaphandle, ngakho-ke kunzima ukulawula ngokunembile ububanzi bangaphandle, futhi ububanzi bokushintshashintsha bukhulu.Ipayipi lensimbi le-ERW: elikhiqizwa ukugoba okubandayo, ububanzi obungaphandle bulawulwa ngokunembile, futhi ububanzi bokuguquguquka buncane.
5. Ukuhlolwa kwe-Tensile Izakhiwo eziqinile zepayipi lensimbi engenamthungo kanye nepayipi lensimbi le-ERW lihambisana namazinga e-API, kodwa amandla epayipi lensimbi engenamthungo ngokuvamile asemkhawulweni ongaphezulu, futhi i-ductility isezingeni eliphansi.Ngokuphambene nalokho, inkomba yamandla yepayipi yensimbi ye-ERW isesimweni esihle kakhulu, futhi inkomba ye-plasticity ingama-33.3% ephakeme kunezinga elijwayelekile.Isizathu siwukuthi njengempahla eluhlaza yepayipi lensimbi ye-ERW, ukusebenza kwekhoyili egoqiwe eshisayo kuqinisekiswa ukuncibilikiswa kwe-micro-alloy, ukucwengwa ngaphandle kwesithando somlilo, kanye nokupholisa nokugingqika okulawulwayo;ipulasitiki.Ukuqondana okunengqondo.
6. Impahla eluhlaza yepayipi lensimbi ye-ERW iyikhoyili egoqwe ngokushisayo, enembayo ephezulu kakhulu enqubweni yokugingqa, engaqinisekisa ukusebenza okufanayo kwengxenye ngayinye yekhoyili.
7. Impahla eluhlaza yepayipi yekhoyili yensimbi eshisayo egoqiwe engu-ERW enosayizi wokusanhlamvu ithatha i-billet ebanzi futhi ewugqinsi yokusakaza, ungqimba olungaphezulu lokuqiniswa okusanhlamvu luwugqinsi, ayikho indawo yamakristalu ekholomu, ukushrinkage porosity kanye nezimbotshana, ukuchezuka kokwakheka kuncane., futhi isakhiwo sihlangene;ukulawula enqubweni yokugoqa elandelayo Ukusetshenziswa kobuchwepheshe bokugoqa obubandayo ngaphezu kwalokho kuqinisekisa usayizi wokusanhlamvu wempahla eluhlaza.
8. Ukuhlolwa kokumelana nokushelela kwepayipi lensimbi le-ERW kuhlobene nezici zempahla eluhlaza kanye nenqubo yokukhiqiza ipayipi.Ukufana kodonga kanye ne-ovality kungcono kakhulu kunamapayipi ensimbi angenamthungo, okuyisizathu esiyinhloko sokuthi ukumelana nokuwa kuphakeme kunamapayipi ensimbi angenamthungo.
9. Ukuhlolwa komthelela Ngenxa yokuqina kwezinto eziyisisekelo zepayipi lensimbi le-ERW liphakeme izikhathi eziningana kunepayipi lensimbi engenamthungo, ukuqina kwe-weld kuwukhiye wepayipi lensimbi le-ERW.Ngokulawula okuqukethwe kokungcola kwempahla eluhlaza, ukuphakama kanye nesiqondiso se-burr yokusika, ukuma konqenqema lokubumba, i-engeli yokushisela, isivinini sokushisela, amandla okushisa kanye nemvamisa, ivolumu ye-welding extrusion, izinga lokushisa eliphakathi lokuhoxisa imvamisa nokujula, ubude besigaba sokupholisa umoya kanye neminye imingcele yenqubo kuqinisekisiwe.Umthelela we-weld weld ufinyelela ngaphezu kuka-60% wensimbi eyisisekelo.Ngokuthuthukiswa okwengeziwe, amandla omthelela we-weld angaba seduze namandla ensimbi eyisisekelo, okuqinisekisa ukusebenza okungenazinkinga.
10. Ukuhlola iziqhumane Ukusebenza kokuhlola okuqhumayo kwamapayipi ensimbi e-ERW kuphakeme kakhulu kunezidingo ezijwayelekile, ikakhulukazi ngenxa yokufana okuphezulu kokuqina kodonga kanye nobubanzi obufanayo bangaphandle bamapayipi ensimbi e-ERW.