I-post forging heat heat ye-stainless steel forgings, eyaziwa nangokuthi ukwelashwa kokushisa kokuqala noma ukwelashwa kokushisa okulungiselelayo, ngokuvamile kwenziwa ngokushesha ngemva kokuba inqubo yokubumba isiqediwe, futhi kunezinhlobo eziningana ezifana nokujwayelekile, ukushisa, ukuthungatha, i-spheroidizing, isixazululo esiqinile, njll. Namuhla sizofunda ngeziningana zazo.

Ukujwayela: Inhloso enkulu ukucwenga usayizi wokusanhlamvu. Shisisa i-forging ngaphezu kwezinga lokushisa lokuguqulwa kwesigaba ukuze wenze isakhiwo esisodwa se-austenite, usinzinze ngemva kwesikhathi sokushisa okufanayo, bese usisusa esithandweni sokupholisa umoya. Izinga lokushisa ngesikhathi sokujwayelekile kufanele lihambe kancane libe ngaphansi kuka-700℃ukunciphisa umehluko wokushisa wangaphakathi nangaphandle kanye nengcindezi esheshayo ku-forging. Kungcono ukwengeza isinyathelo se-isothermal phakathi kuka-650℃futhi 700℃; Emazingeni okushisa angaphezu kuka-700℃, ikakhulukazi ngenhla kwe-Ac1 (iphoyinti lenguquko yesigaba), izinga lokushisa lama-forging amakhulu kufanele linyuswe ukuze kuzuzwe imiphumela engcono yokuhluzwa okusanhlamvu. Izinga lokushisa lokujwayelekile livame ukuba phakathi kwama-760℃futhi 950℃, kuye ngendawo yoguquko yesigaba enokuqukethwe kwengxenye ehlukile. Ngokuvamile, ukwehla kwekhabhoni nengxubevange okuqukethwe, kuyanda izinga lokushisa elivamile, futhi ngokuphambene nalokho. Amanye amamaki ensimbi akhethekile angafinyelela izinga lokushisa elingu-1000℃ku1150℃. Kodwa-ke, ukuguqulwa kwesakhiwo sensimbi engagqwali nezinsimbi ezingenayo insimbi kufinyelelwa ngokwelashwa kwesisombululo esiqinile.

Ukushisa: Inhloso enkulu ukukhulisa i-hydrogen. Futhi ingakwazi futhi ukuzinzisa i-microstructure ngemva kokuguqulwa kwesigaba, isuse ingcindezi yokuguqulwa kwesakhiwo futhi inciphise ubulukhuni, yenza ama-forging ensimbi engagqwali kube lula ukucubungula ngaphandle kokuguqulwa. Kunezigaba ezintathu zokushisa zokushisa, okungukuthi izinga lokushisa eliphezulu lokushisa (500℃~ 660℃), izinga lokushisa eliphakathi nendawo (350℃~ 490℃), kanye nezinga lokushisa eliphansi (150℃~250℃). Ukukhiqizwa okuvamile kwama-forging amakhulu kusebenzisa indlela yokushisa ephezulu. Ukushisa ngokuvamile kwenziwa ngokushesha ngemva kokujwayelekile. Lapho ukubumba okujwayelekile kupholile emoyeni kuze kufike kuma-220℃~300℃, siyashisisa, sishiswe ngokulinganayo, futhi sigqunywe esithandweni, bese sipholiswa sibe ngaphansi kwama-250.℃~350℃ebusweni bokubumba ngaphambi kokukhishwa esithandweni. Izinga lokupholisa ngemva kokushisa kufanele lihambe kancane ngokwanele ukuvimbela ukwakheka kwamachashazi amhlophe ngenxa yengcindezi esheshayo esheshayo phakathi nenqubo yokupholisa, kanye nokunciphisa ingcindezi eyinsalela ekufogeni ngangokunokwenzeka. Inqubo yokupholisa ivame ukuhlukaniswa izigaba ezimbili: ngaphezu kwama-400℃, njengoba insimbi isendaweni yokushisa ene-plasticity enhle kanye ne-brittleness ephansi, izinga lokupholisa lingashesha kancane; Ngaphansi kuka-400℃, njengoba insimbi ingene ebangeni lokushisa elinokuqina okuphezulu okubandayo kanye nokuqina, izinga lokupholisa elihamba kancane kufanele lamukelwe ukuze kugwenywe ukuqhekeka nokunciphisa ingcindezi esheshayo. Ngensimbi ezwela amachashazi amhlophe kanye ne-hydrogen embrittlement, kuyadingeka ukunquma ukunwetshwa kwesikhathi sokushisa ukuze kunwetshwe i-hydrogen ngokusekelwe ekulinganeni kwe-hydrogen kanye nosayizi osebenzayo we-cross-sectional we-forging, ukuze kusatshalaliswe futhi kuchichime i-hydrogen ensimbi. , bese ulehlisela ebangeni lezinombolo eliphephile.

I-Annealing: Izinga lokushisa lifaka lonke uhla lokujwayelekile kanye nokushisa (150℃~950℃), kusetshenziswa indlela yokupholisa isithando somlilo, efana nokushisa. Ukufaka i-annealing ngezinga lokushisa elingaphezulu kwephuzu lokushintsha kwesigaba (izinga lokushisa elivamile) kubizwa ngokuthi i-annealing ephelele. Ukukhipha i-anneal ngaphandle koshintsho lwesigaba kubizwa ngokuthi i-annealing engaphelele. Injongo eyinhloko yokudonsa i-annealing iwukuqeda ingcindezi kanye nokuzinzisa ukwakheka kwe-microstructure, okuhlanganisa ukushisa okuphezulu kwe-anneal ngemva kokuguquka okubandayo kanye ne-low-temperature annealing ngemva kokushisela, njll. I-normalization+tempering iyindlela ethuthuke kakhulu kune-annealing elula, njengoba ihilela ukuguqulwa kwesigaba esanele. kanye nokuguqulwa kwesakhiwo, kanye nenqubo yokwandisa izinga lokushisa kwe-hydrogen.