Ukuqamba okushisayoukubunjwa kwensimbi ngaphezu kwezinga lokushisa le-recrystallization.
Ukwandisa izinga lokushisa kungathuthukisa i-plasticity yensimbi, kuyasiza ekuthuthukiseni ikhwalithi yangaphakathi ye-workpiece, ukuze kungabi lula ukuqhekeka. Ukushisa okuphezulu nakho kunganciphisa ukumelana nokuguqulwa kwensimbi, kunciphise amathani adingekayo wemishini yokubumba. Kodwa i-hot forging process, ukunemba kwe-workpiece ayilungile, indawo engaphezulu ayibushelelezi, yenza kube lula ukukhiqiza i-oxidation, i-decarburization kanye nokulahlekelwa okuvuthayo. Uma i-workpiece inkulu futhi iwugqinsi, amandla ezinto ezibonakalayo aphakeme futhi ipulasitiki iphansi (njengokuginqika kwepuleti eliwugqinsi, ubude bomdwebo wenduku yensimbi ye-carbon ephezulu, njll.),ukuzenzela okushisayoiyasetshenziswa. Lapho insimbi (efana nomthofu, ithini, i-zinc, ithusi, i-aluminium, njll.) inepulasitiki eyanele futhi inani lokuguqulwa alilikhulu (njengokucutshungulwa kwezitembu eziningi), noma inani eliphelele lokuguqulwa kanye nenqubo yokubumba esetshenzisiwe ( njenge-extrusion, i-radial forging, njll.) ivumela ukuguqulwa kwepulasitiki yensimbi, ngokuvamile ayisebenzisi ukubumba okushisayo, kodwa sebenzisa ukubumba okubandayo. Izinga lokushisa eliphakathi kwezinga lokushisa lokuqala lokuqamba kanye neukuqamba kokugcinaizinga lokushisa lokushisa elishisayo kufanele libe likhulu ngangokunokwenzeka ukuze kuzuzwe umsebenzi wokubumba omningi ngangokunokwenzeka ngokushisisa okukodwa. Nokho, highukwakhiwa kokuqalaizinga lokushisa lizoholela ekukhuleni ngokweqile kwezinhlamvu zensimbi kanye nokwakheka kokushisa ngokweqile, okuzonciphisa ikhwalithi yezingxenye zokubumba. Uma izinga lokushisa liseduze nendawo yokuncibilika kwensimbi, indawo encibilikayo ephansi yezinto ezincibilikayo kanye ne-oxidation ye-intergranular izokwenzeka, okuholela ekushiseni ngokweqile. Amabhilidi ashiswe ngokweqile avame ukuphulwa ngesikhathi sokuqanjwa. Ujeneneukuzenzela okushisayoizinga lokushisa: carbon steel 800 ~ 1250 ℃; Ingxubevange yensimbi yesakhiwo 850 ~ 1150 ℃; Isivinini esikhulu sensimbi 900 ~ 1100 ℃; Evame ukusetshenziswa aluminium ingxubevange 380 ~ 500 ℃; Ingxubevange ye-Titanium 850 ~ 1000 ℃; I-Brass 700 ~ 900 ℃.

Ukuganga okubandayoingaphansi kwezinga lokushisa le-metal recrystallization of forging, elivame ukubizwa ngokuthi ukubumba okubandayo ekamelweni lokushisa, futhi lizoba ngaphezu kwezinga lokushisa legumbi, kodwa lingabi ngaphezu kwezinga lokushisa lokuhlanganisa kabusha le-forging elibizwa ngokuthi ukubumba okufudumele. Ukunemba kokubumba okufudumele kuphakeme, ingaphezulu libushelelezi kakhulu futhi ukumelana ne-deformation akukukhulu.
I-workpiece eyakhiwe ngokufaka okubandayo ngaphansi kwezinga lokushisa elijwayelekile inokunemba okuphezulu komumo nosayizi, indawo ebushelelezi, izinqubo ezimbalwa zokucubungula futhi kulula ukuzenzela ukukhiqiza. Izingxenye eziningi ezibandayo nezicindezelwe ngokubanda zingasetshenziswa ngokuqondile njengezingxenye noma imikhiqizo ngaphandle kwesidingo sokusika. Kodwa kuukuganga okubandayo, ngenxa yepulasitiki ephansi yensimbi, kulula ukuqhekeka ngesikhathi sokuguqulwa, futhi ukumelana nokuguqulwa kukhulu, ngakho-keukubumba amathoni amakhulufuthi imishini yokucindezela iyadingeka.