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% ngaphezu kwesilinganiso. 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.