Post forging heat treatment yestainless steel forgings, inozivikanwawo sekutanga kupisa kupisa kana kugadzirira kupisa kurapwa, inowanzoitwa pakarepo mushure mekugadzira nzira yapera, uye kune akati wandei mafomu akadai se normalizing, tempering, annealing, spheroidizing, solid solution, etc. Nhasi tichadzidza nezvevanoverengeka vavo.

Normalization: Chinangwa chikuru ndechekunatsa saizi yezviyo. Pisa iyo yekugadzika pamusoro pechikamu chekushandura tembiricha kuti uite imwe chete austenite chimiro, ichidzikamisa mushure menguva yetembiricha yakafanana, wozoibvisa kubva muchoto kuitira kutonhora kwemhepo. Iyo yekudziya mwero panguva ye normalizing inofanira kunonoka pazasi 700℃kuderedza mukati uye kunze kwekushisa kusiyana uye pakarepo kushungurudzika mukugadzira. Zvakanakisa kuwedzera isothermal nhanho pakati pe650℃uye 700℃; Pakupisa kwepamusoro pe700℃, kunyanya pamusoro peAc1 (phase transition point), mwero wekupisa wefogi hombe unofanirwa kuwedzerwa kuti uwane mhedzisiro yekunatsa zviyo. Iyo tembiricha yemhando ye normalizing kazhinji iri pakati pe760℃uye 950℃, zvichienderana nechikamu chekushandura nzvimbo ine zvikamu zvakasiyana-siyana zvemukati. Kazhinji, iyo yakaderera iyo kabhoni uye alloy zvemukati, iyo inokwidza iyo normalizing tembiricha, uye zvinopesana. Mamwe magiredhi akakosha esimbi anogona kusvika patembiricha ye1000℃kusvika ku1150℃. Zvisinei, shanduko yemaitiro esimbi isina tsvina uye isina-ferrous simbi inowanikwa kuburikidza nekugadzirisa kwakasimba kwekugadzirisa.

Kupisa: Chinangwa chikuru ndechekuwedzera hydrogen. Uye inogona zvakare kudzikamisa iyo microstructure mushure mekuchinja kwechikamu, kubvisa dhizaini yekushandura kushushikana uye kuderedza kuomarara, ichiita simbi isina tsvina forgings nyore kugadzirisa pasina deformation. Kune matatu matatu etembiricha ekupisa, anoti tembiricha yakakwira (500℃~660℃), tembiricha iri pakati nepakati (350℃~490℃), uye tembiricha yakaderera (150℃~250℃) Kugadzirwa kwakajairwa kwemafogi makuru kunotora nzira yekupisa yekupisa. Kupisa kunowanzoitwa pakarepo mushure me normalizing. Kana iyo yakajairwa forging iri mhepo-yakatonhorera kusvika ku220℃~300℃, inodziiswazve, inopisa zvakaenzana, uye yakavharidzirwa muchoto, uye yozotonhodzwa kusvika pasi pe250.℃~350℃pamusoro pechigadziro chisati chabudiswa muchoto. Mwero wekutonhodza mushure mekupisa unofanirwa kunonoka zvakakwana kudzivirira kuumbwa kwemavara machena nekuda kwekunyanya kushushikana kwepakarepo panguva yekutonhora, uye kuderedza kusara kunetseka mukugadzira zvakanyanya sezvinobvira. Iyo yekutonhodza maitiro inowanzokamurwa kuita nhanho mbiri: pamusoro pe400℃, sezvo simbi iri muhutano hwekushisa nepurasitiki yakanaka uye yakaderera brittleness, chiyero chekutonhora chinogona kukurumidza zvishoma; Pasi pe400℃, sezvo simbi yakapinda muhutano hwekushisa nehupamhi hwekutonhora kuoma uye brittleness, kutonhora kunononoka kunofanira kugamuchirwa kuti kurege kuputika uye kuderedza kushungurudzika pakarepo. Kune simbi inonzwa kune chena mavara uye hydrogen embrittlement, zvinodikanwa kuona kuwedzera kwekudziya nguva yekuwedzera hydrogen zvichienderana nehrojeni yakaenzana uye inobudirira muchinjika-chikamu saizi yekugadzira, kuitira kuparadzira uye kufashukira haidrojeni musimbi. , uye kuideredza kusvika kune yakachengeteka nhamba yenhamba.

Annealing: Tembiricha inosanganisira huwandu hwese hwekudzikamisa uye kupisa (150℃~950℃), uchishandisa nzira yekudziya yevira, yakafanana nekupisa. Kubata netembiricha yekudziya pamusoro pechikamu chekuchinja (normalizing tembiricha) inodaidzwa kuti annealing yakakwana. Anealing pasina phase transition inonzi incomplete annealing. Chinangwa chikuru chekuvhara ndechekubvisa kushushikana uye kudzikamisa iyo microstructure, kusanganisira yakakwirira-tembiricha annealing mushure mekutonhora deformation uye yakaderera-tembiricha annealing mushure mewelding, etc. Normalization + tempering inzira yepamberi pane yekureruka, sezvo inosanganisira yakakwana chikamu shanduko. uye kushandurwa kwemaitiro, pamwe chete nekugara tembiricha yehydrogen yekuwedzera maitiro.