Isingeniso kanye nokusetshenziswa kweMandrel

I-Mandrel iyithuluzi elisetshenziswa ekukhiqizeni amapayipi angenamthungo, afakwa ngaphakathi emzimbeni wepayipi futhi enze imbobo eyisiyingi enama-roller ukuze alolonge ipayipi. Ama-mandrel ayadingeka ukuze kugingqeke amapayipi ngokuqhubekayo, ukunwetshwa kwepayipi elitshekile, ukugingqika kwepayipi ngezikhathi ezithile, ipayipi eliphezulu, nokugoqeka okubandayo kanye nokudweba okubandayo kwamapayipi.

I-Mandrel iyinduku ende eyindilinga ebamba iqhaza ekuguqulweni kwezinto zepayipi endaweni yokuguqulwa, njengaphezulu. Umehluko wukuthi ngesikhathi se-oblique rolling, i-Mandrel ihamba nge-axially ngaphakathi kwempahla yepayipi njengoba ijikeleza; Ngesikhathi sokuginqa i-longitudinal (i-tube rolling eqhubekayo, ukugoqa kweshubhu ngezikhathi ezithile, ishubhu ephezulu), i-Mandrel ayijikelezi kodwa futhi ihamba nge-axially ngeshubhu.

Ku-Mandrel entantayo kanye nokunyakaza okulinganiselwe i-Mandrel eqhubekayo yomshini wokugoqa ipayipi (bheka umshini wokugoqa wamapayipi oqhubekayo wokugingqika kwamapayipi), i-Mandrel iyithuluzi elibalulekile. Ngaphandle kokwenziwa ngezinto eziqinile eziqinile futhi eziphakeme ezivimbela ukugqoka, nazo zidinga izinga eliphezulu eliphezulu, njengokugaya nokwelashwa kokushisa ngemva kokuphenduka. I-Mandrel entantayo yinde kakhulu (ifika ku-30m) futhi iyasinda (kufika ku-12t). Ubude be-Mandrel ekhawulelwe bufushane, kepha budinga ikhwalithi ephezulu yezinto ezibonakalayo. I-Mandrel esetshenziselwa ipayipi eliphezulu kufanele ikwazi ukumelana namandla amakhulu okuphusha. I-Mandrel yomshini wokugoqa ipayipi ngezikhathi ezithile inesikhathi eside sokushisa ngesikhathi sokusebenza. I Mandrels of the diagonal rolling nokwelula umshini zihlanganisa ukungezwani Mandrels, Mandrels ezintantayo, umkhawulo Mandrels, futhi Mandrels retraction.

I-tension Mandrel iyi-Mandrel ehamba nge-axially ngesivinini esikhulu kunesivinini se-axial sepayipi ngesikhathi sokusebenza (bheka isandiso sokugoqa ipayipi), futhi yenza ukungezwani endaweni engaphakathi yepayipi. Uhlobo lokuhlehla lwe-Mandrel luyi-Mandrel ehamba ngokuphambene ne-axial isiqondiso se-tube, futhi ibhekene ne-post tension. Izidingo ze-Mandrel yomshini wokugoqa kanye nokwelula we-diagonal ziphansi kunezo zomshini wokugoqa nokwelula ubude.

I-Mandrel ekhawulelwe inokusetshenziswa okuhlukahlukene okubalulekile enqubweni yokugingqika kwamapayipi, okuboniswa ikakhulukazi kulezi zici ezilandelayo:

l Ukuthuthukisa ukunemba kokuqina kodonga:

Ukunyakaza okulinganiselwe kwe-Mandrel rolling Mill kuqinisekisa ukunemba kodonga lwamapayipi ngokulawula isivinini se-Mandrel. Ijubane le-Mandrel kufanele libe phezulu kunejubane lokuluma lohlaka lokuqala futhi libe phansi kunejubane lokuginqika lohlaka lokuqala, ukuze kugcinwe isivinini esingaguquki kuyo yonke inqubo yokuginqika, ugweme ukungahambi kahle kokugeleza kwensimbi, futhi unciphise isenzakalo. "amafindo oqalo".

l Ukuthuthukisa ikhwalithi yamapayipi ensimbi:

Ngenxa yokunyakaza okuhlobene phakathi kwe-Mandrel nendawo yangaphakathi yepayipi lensimbi, ukunyakaza okulinganiselwe kwe-Mandrel rolling Mill kuyasiza ekwandiseni insimbi, kunciphisa ukuguquguquka kwe-lateral, futhi kuthuthukisa ukunemba kwezindawo zangaphakathi nezingaphandle kanye nobukhulu bensimbi. ipayipi lensimbi.

l Nciphisa ukugeleza kwenqubo:

Uma kuqhathaniswa ne-Mandrel rolling mill entantayo, isigayo esilinganiselwe sokunyakaza kwe-Mandrel siqeda umshini wokuhlubula, sifinyeze ukugeleza kwenqubo, sikhulise izinga lokushisa lokugcina lamapayipi ensimbi, futhi yonga amandla.