Ipayipi lensimbi ye-carbon emaphakathi ingenye yamapayipi abilayo asetshenziswa kubhayela wepayipi lokuphehla amandla. Iningi lala mashubhu lisebenza ngaphansi kokushisa okuphezulu nokucindezela, ngakho-ke, kunezidingo ezithile ezicini zemishini yepayipi lensimbi yensimbi emnene, ukusebenza kwe-welding kanye nokusebenza kwenhlangano, ngaphezu kwalokho okudingekayo ukuze kube negumbi lokushisa elihle kanye nezakhiwo zokushisa eziphakeme zemishini, lawa mashubhu. zidinga ukucubungula okuningi okubandayo, ngakho-ke, izidingo zalawa mashubhu kumele zibe ne-ductility ephezulu kanye nokuqina. Uhlelo lokucubungula okubandayo lubalulekile ekufakweni kwepayipi le-boiler, kodwa ohlelweni olubandayo lokugoba, ukuqina komsebenzi kuzoba ngumnkantsha. I-cold-formed general, kunezindlela ezimbili, eyodwa ayakhekanga ngaphambi kokushisa i-cold coast preheating. Kushisisa ngaphambili kuvamise ukubhaka amathoshi, ukushisa kwangaphambi kokushisa ngokomgunyathi ngu-opharetha ukuze kubambe, futhi ngemva kokubili kokugoba okubandayo, futhi ayikho inqubo yokwelapha ukushisa. Ngakho-ke, ukuphunyuka kokucubungula okubandayo kuvame ukuletha izinguquko zezakhiwo zemishini kanye nezinguquko ekusebenzeni kwezinhlangano, ezakha ipayipi elikhanyayo elingaba khona kumshwalense wenqubo yesevisi ukuze libe esinye sezizathu zokwehluleka. Kuyaziwa, ukugoba okubandayo ngemuva kokuqina kubangela amandla eshubhu lensimbi kanye nokwanda kokuqina, i-ductility kanye nokuqina kwehle, isizathu siphukile ikristalu futhi eduze nendiza ye-torsional torsional ye-SUI yethusi eqinile, okwandisa ukumelana nokushelela ukuze uqhubeke ukushelela okunzima ukukufeza. Ngaphezu kwalokho, ngokwanda kwezinga lokuguqulwa, inqubo yokuqina kwezinwele zegolide yanda.

Epayipini lensimbi ye-carbon emnene, ukucubungula okubandayo (kuhlanganise nokwakheka okubandayo ngaphambi kokufudumala) kuzoba nomthelela omkhulu ekuhleleni amapayipi ensimbi, kuzoholela ngokuqondile ekuhlulekeni okukhulu kokuphuka. Ngakho-ke, inhlangano kumele ibe yizinyathelo eziphikisanayo zokucubungula ipayipi lensimbi ye-carbon steel encane.

Ukuthuthukisa ukufudumala okunengqondo

Ngokusho kwempendulo yensimbi ehlukene kanye nezinga lokushisa le-recrystallization, ukwenza izinga lokushisa elilungile le-preheat nezinqubo zokusebenza, futhi hhayi ukufudumeza ngobumpumputhe, ukungeqi iphuzu lokuguquka kwesigaba se-Ac], ukufudumala kungavimbela ukuqhekeka kwekona noma ukwakheka kwe-micro. - imifantu. Kodwa-ke, idatha ibonisa ukuthi insimbi enekhabhoni ephansi ku-300. C mayelana nokuthi kuzoba nini "i-blue brittle" esikhundleni sokuba ukuqina kwepulasitiki kuyehla. Ngakho, ukuze ngokushelela kakhudlwana isinyathelo deformation, izinga lokushisa preheating at 400 ~ 500. C of iphunga kufaneleka kakhulu. Ngesikhathi esifanayo, naka izicathulo, ithawula, isivinini sokugoba esibanda kakhulu; ngokushesha kakhulu. Thuthukisa ijubane lokuma kwehlobo, izinga lokushisa liphezulu "lomnkantsha Oluhlaza".

Ukwelashwa okushisa ngemva kokugoba inetha

I-recrystallization annealing, kanye nokuqedwa kwezakhiwo zemishini ngenxa yokuqina komsebenzi wezinguquko ngokuya ngemininingwane ehlukene kanye nezimo zokusebenza ze-workpiece kufanele kwenziwe ku-workpiece ngemuva kokusebenza okubandayo. I-640 isetshenziselwa ipayipi lensimbi le-20 # annealing, ingaba impumuzo enhle yokucindezeleka kanye nokubuyiselwa kwezakhiwo zemishini. Kodwa kufanele kuqashelwe ukuthi, enqubweni yokupholisa elandelayo, kuyadingeka ukunciphisa ukupholisa, - njengezinga lokupholisa alikwazi ukuba ngaphezu kuka-6 kuya ku-8. C / imvula.

Kafushane, ipayipi lensimbi ye-carbon emnene enqubweni yokugoba ebandayo (kuhlanganise nokufudumala), umthelela obalulekile ekusebenzeni kwenhlangano kube ipayipi lensimbi, umphumela oqondile wokuhluleka okukhulu kokuphuka. Preheat ipayipi carbon steel eyakheke abandayo kufanele ngokuqinile ngokuhambisana inqubo ukubulawa, emva kokubanda-eyakheke kumele ugweme umugqa annealing ukwelashwa ukushisa.