Free forgingsimbi ine zvinotevera zvitatu zvinokosha ehupfumi pasi quenching mamiriro.
(1) Mamiriro ezvinhu
Zvinoenderana nehukuru hwesimbi, tembiricha yekudziya, nguva, maitiro ekushandura uye kutonhora modhi, iyo yakadzimwa simbi chimiro chinofanira kuumbwa nemartensite kana martensite + residual austenite, mukuwedzera, panogona kunge paine diki isina kunyungudika carbide. Ose martensite uye akasara austenite ari mune metastable mamiriro pakamuri tembiricha, uye anowanzo chinja kune yakagadzikana mamiriro eferric mass plus simenti.
(2) Hunhu hwekuoma
Kukanganiswa kwelatisi kunokonzerwa nemaatomu ecarbon kunoratidzwa nekuoma, uko kunowedzera ne supersaturation, kana kabhoni yemukati. Kudzima chimiro kuoma, simba rakakwirira, plastiki, yakaderera kuoma.
(3) Unhu hwekushushikana
Kusanganisira micro stress uye macro stress, iyo yekare yakabatana nekukanganiswa kwelattice kunokonzerwa neatomu kabhoni, kunyanya nepamusoro kabhoni martensite kusvika kune yakakosha zvikuru, kuongororwa kwekudzima martensite mumamiriro ekunetseka; Iyo yekupedzisira imhaka yekusiyana kwekushisa kwakaumbwa pamuchinjikwa kana kudzima, iyo workpiece pamusoro kana pakati pekunetseka mamiriro akasiyana, kune tensile kushushikana kana compressive kushushikana, mune workpiece kuchengetedza chiyero. Kana kushushikana kwemukati kwezvikamu zvesimbi zvakaomeswa zvisina kubviswa munguva, zvinokonzeresa kuwedzera deformation uye kunyange kuputika kwezvikamu.
Kupfupisa, kunyangwe iyo yakadzimwa workpiece ine yakakwirira kuomarara uye yakakwirira simba, asi ibvi rakakura, chimiro hachina kugadzikana, uye kune yakakura kudzimwa mukati kushushikana, saka inofanirwa kuve yakatsamwa kushandisa. Kazhinji kutaura, kupisa maitiro ndiyo yekutevera nzira yekudzima simbi, zvakare ndiyo yekupedzisira nzira yekupisa yekupisa, inopa workpiece mushure mekudiwa kwebasa racho.
Kupisa inzira yekupisa simbi yakaomeswa kune imwe tembiricha iri pazasi peAc1, ichiichengeta kwenguva yakati, uye wozoitonhodza kusvika kune tembiricha yekamuri. Zvinangwa zvaro zvakakosha ndezvi:
(1) gadzirisa kuoma uye kusimba kwesimbi zvine musoro, gadzirisa kuoma kwesimbi, kuitira kuti workpiece inosangana nezvinodiwa zvekushandisa;
(2) yakagadzikana chimiro, kuitira kuti workpiece munguva yekushanda kwechigarire irege kuitika shanduko yehutano, kuitira kuti igadzikane maitiro uye hukuru hwebasa rekushanda;
Iyo yekudzima mukati kushushikana kweiyo workpiece inogona kuderedzwa kana kubviswa kuti ideredze deformation yayo uye kudzivirira kuputika.