I-Post forging heat heat of stainless steel forgings, ekwaziwa njengonyango lokuqala lobushushu okanye unyango olulungiselelwe ubushushu, idla ngokuqhutywa ngoko nangoko emva kokuba inkqubo yokubumba igqityiwe, kwaye kukho iifom ezininzi ezifana ne-normalizing, tempering, annealing, spheroidizing, solution eyomeleleyo, njl. Namhlanje siza kufunda ngezininzi zazo.

Ukuqheleka: Eyona njongo iphambili kukucokisa ubungakanani beenkozo. Fudumeza i-forging ngaphezu kweqondo lokutshintsha kwesigaba ukwenza isakhiwo esisodwa se-austenite, uzinzise emva kwexesha lobushushu obufanayo, uze uyisuse ezikweni lokupholisa umoya. Izinga lokufudumeza ngexesha eliqhelekileyo kufuneka licothe ngaphantsi kwe-700℃ukunciphisa ukuhluka kweqondo lokushisa ngaphakathi nangaphandle kunye noxinzelelo olukhawulezileyo kwi-forging. Kungcono ukongeza inyathelo le-isothermal phakathi kwama-650℃kunye nama-700℃; Kubushushu obungaphezulu kwama-700℃, ngakumbi ngaphezu kwe-Ac1 (indawo yokutshintsha kwesigaba), izinga lokufudumeza kwe-forgings enkulu kufuneka linyuswe ukuze kuphunyezwe iziphumo ezingcono zokucocwa kweenkozo. Uluhlu lwamaqondo obushushu obuqhelekileyo luhlala phakathi kwama-760℃kunye nama-950℃, kuxhomekeke kwindawo yenguqu yesigaba kunye nemixholo yamacandelo ahlukeneyo. Ngokuqhelekileyo, i-carbon ephantsi kunye nomxholo we-alloy, iphezulu iqondo lokushisa eliqhelekileyo, kwaye ngokuphambene noko. Amanye amabakala ensimbi akhethekileyo anokufikelela kwiqondo lokushisa le-1000℃ukuya kwi1150℃. Nangona kunjalo, ukuguqulwa kwesakhiwo sensimbi engenasici kunye neensimbi ezingenayo i-ferrous kufezekiswa ngonyango lwesisombululo esiqinileyo.

Ukufudumeza: Eyona njongo kukwandisa i-hydrogen. Kwaye inokuzinzisa i-microstructure emva kokuguqulwa kwesigaba, isuse uxinzelelo lokuguqulwa kwesakhiwo kunye nokunciphisa ubulukhuni, ukwenza i-stainless steel forgings kulula ukuyiqhuba ngaphandle kokuguqulwa. Kukho iindidi ezintathu zamaqondo obushushu bobushushu, ezizezi, ubushushu obuphezulu (500).℃~660℃), ubushushu obuphakathi (350℃~490℃), kunye nobushushu obuphantsi (150℃~250℃). Imveliso eqhelekileyo ye-forgings enkulu ithatha indlela yokushisa okuphezulu. Ukushisa ngokuqhelekileyo kuqhutyelwa ngokukhawuleza emva kokuqhelekileyo. Xa ukubunjwa okuqhelekileyo kupholile emoyeni ukuya kuma-220℃~300℃, iyafudunyezwa, ifudunyezwe ngokulinganayo, ize igqunywe ezikweni, ize ipholiswe ibe ngaphantsi kwama-250.℃~350℃phezu komphezulu we-forging phambi kokuba ukhutshwe eziko. Izinga lokupholisa emva kokupholisa kufuneka licothe ngokwaneleyo ukuthintela ukuvela kwamabala amhlophe ngenxa yoxinzelelo olugqithisileyo olukhawulezileyo ngexesha lenkqubo yokupholisa, kunye nokunciphisa uxinzelelo olushiyekileyo ekubumbeni kangangoko. Inkqubo yokupholisa idla ngokwahlulwa ibe ngamanqanaba amabini: ngaphezulu kwama-400℃, njengoko intsimbi ikwiqondo lokushisa kunye neplastiki enhle kunye ne-brittleness ephantsi, izinga lokupholisa lingakhawuleza ngokukhawuleza; Ngaphantsi kwama-400℃, njengoko intsimbi ingene kwiqondo lokushisa kunye nokuqina okuphezulu okubandayo kunye nokuqina, umlinganiselo wokupholisa ocothayo kufuneka wamkelwe ukuphepha ukuqhekeka kunye nokunciphisa uxinzelelo lwangoko. Kuba intsimbi enovakalelo kumabala amhlophe kunye ne-hydrogen embrittlement, kuyimfuneko ukumisela ukwandiswa kwexesha lobushushu lokwandiswa kwe-hydrogen esekelwe kwi-hydrogen elinganayo kunye nobukhulu obusebenzayo be-cross-sectional ye-forging, ukuze isasaze kwaye iphuphume i-hydrogen kwintsimbi. , kwaye unciphise kuluhlu lwamanani olukhuselekileyo.

I-Anealing: Iqondo lobushushu libandakanya lonke uluhlu lwesiqhelo kunye nobushushu (150℃~950℃), usebenzisa indlela yokupholisa isithando somlilo, efana nokuthambisa. I-Annealing kunye nobushushu bokufudumala ngaphezu kwendawo yokutshintsha kwesigaba (iqondo lokushisa eliqhelekileyo) libizwa ngokuba yi-annealing epheleleyo. I-Annealing ngaphandle kwenguqu yesigaba ibizwa ngokuba yi-annealing engaphelelanga. Eyona njongo iphambili ye-annealing kukuphelisa uxinzelelo kunye nokuzinzisa i-microstructure, kubandakanywa ubushushu obuphezulu be-annealing emva kwe-deformation ebandayo kunye nobushushu obuphantsi be-annealing emva kwe-welding, njl njl. kunye nokuguqulwa kwesakhiwo, kunye nenkqubo yokwandisa ubushushu be-hydrogen rhoqo.