Isihluthulelo sokuthuthukisa iukupholisa imininingwane ye-forgingsngemvaukuqambaukukhetha izinga lokupholisa elifanele ukuze ugweme izinkinga zokupholisa ezishiwo ngenhla. Ngokuvamile, ukucaciswa kokupholisa kwangemva kokufojika kunqunywa ngokuya ngesakhiwo samakhemikhali, izici zesakhiwo se-microstructure, isimo sempahla eluhlaza kanye nosayizi wesigaba wento embi, kubhekiselwa kudatha efanelekile.
Ngokuvamile, ukwakheka kwamakhemikhali okungenalutho kulula, kuyashesha izinga lokupholisa ngemva kwalokhoukuqamba, futhi ihamba kancane ngenye indlela. Ngensimbi ye-carbon ne-low alloy steelama-forgings, ukupholisa umoya kungamukelwa ngemvaukuqamba. Futhi ukwakheka kwe-alloy eyinkimbinkimbi yensimbi ephezulu ye-alloyama-forgingsnoma high hardability forgings, emva kokuqamba kufanele kuthathwe ukupholisa umgodi noma ukupholisa isithando somlilo.
Uma insimbi yethuluzi le-carbon, insimbi yensimbi ye-alloy kanye nensimbi enekhabhoni ephezulu zipholiswa kancane ngemva kwalokhoukuqamba, i-network carbide izokwehla emngceleni wokusanhlamvu, okuzophazamisa kakhulu ukusebenza kwesevisi ye-forging. Ngakho-ke, lolu hlobo lwe-forging lupholiswa ku-700 ℃ ngokupholiswa komoya, ukuqhuma noma ukufutha ngokushesha ngemva kokubumba, beseama-forgingszifakwa emigodini noma esithandweni ukuze kuphole kancane.

Ngensimbi ye-austenitic, insimbi ye-ferrite nezinye izinsimbi ngaphandle kokuguqulwa kwesigaba, ukupholisa okusheshayo kungamukelwa ngoba akukho ukuguqulwa kwesigaba enqubweni yokupholisa ngemva kwalokho.ukuqamba. Ukwengeza, ukupholisa okusheshayo kuyadingeka futhi ukuze kutholwe isakhiwo sesigaba esisodwa nokuvimbela ukupholisa okuhamba kancane kwensimbi ye-ferrite ku-475 ℃. Ngakho-ke, lolu hlobo lwe-forging lungapholiswa emoyeni ngemvaukuqamba.
Ezinsimbi ezipholiswe ngomoya, njengensimbi ye-bainitic, insimbi engagqwali ye-martensitic, insimbi yesivinini esikhulu, insimbi yensimbi ye-alloy ephezulu, njll. Ngenxa yokupholisa komoya, ukuguqulwa kwe-bainite ne-martensite kungenzeka, okuzobangela ingcindezi enkulu ye-microstructure futhi kube lula ukukhiqiza ukuqhekeka okupholisa. . Ngakho-ke, lolu hlobo lwe-forging kufanele lupholile kancane ngemva kwalokhoukuqamba.
Ngensimbi ezwela indawo emhlophe, njengensimbi ye-chrome-nickel, ukuze kuvinjelwe indawo emhlophe ngesikhathi sokupholisa, ukupholisa isithando somlilo kufanele kwenziwe ngokuya ngezici ezithile zokupholisa.
Forgingseyenziwe ngensimbi inezinga lokupholisa elisheshayo ngemuvaukuqamba, kuyilapho lezo ezenziwe ngensimbi ye-ingot zinezinga lokupholisa elihamba kancane. Ukwengeza, ama-forging anosayizi wesigaba esikhulu kufanele apholiswe kancane ngemva kokubumba ngenxa yokucindezeleka okukhulu kwezinga lokushisa lokupholisa, kuyilapho ama-forging anosayizi wesigaba esincane angapholiswa ngokushesha ngemva kokufoja.