Iyo yekuongororwa kwemeshini yekukurudzira crack inobatsira pakuziva chikonzero chakakosha checrack, inova ndiyo hwaro hwechinangwa chekuzivikanwa kwecrack. Inogona kucherechedzwa kubva kune akawanda ekugadzira crack kesi kuongororwa uye akadzokororwa kuyedza kuti mashandiro uye hunhu hwesimbi alloy forgings haina symmetrical, iyo ine kukuvadza kwakakosha kupaza.

1. Raw zvinhu zvine symmetrical michina uye maitiro.

Mukuita kwese kwedeformation, dislocation exercise pamwe nendege inotsvedza, uye kana ikasangana neroadblock, inotutirana uye ikonzeresa kushushikana kwepasi kwakaringana kukonzeresa kutsemuka, kana cavitation uye micro-cracks nekuda kwekudyidzana kwe dislocation, iyo yakabatana nekusimudzira maitiro ekutsemuka kwemacro-economic. Iyi kiyi inokonzeresa tembiricha yedeformation yakadzikira (yakaderera pane tembiricha yekuomesa basa), kana deformation level yakakura kwazvo, deformation rate inokurumidza. Rudzi urwu rwekutsemuka kunowanzo transgranular kana transgranular uye intergranular yakasanganiswa, asi nekuti tembiricha mamorekuru ane chiyero chepamusoro chekupararira kwekunze, chinobatsira kusimuka kukwira, kukurumidza kugadzirisa kwekugadzira uye kuomesa basa, kuitira kuti deformation yatove yakakonzera kuti micro crack iri nyore kugadzirisa, mu deformation tembiricha yakakodzera, deformation rate haigone kuvandudza maitiro anononoka macrocomic.

2. Raw zvinhu zvine maitiro asina kuenzana uye maitiro.

Zvemidziyo ine asymmetrical masisitimu uye zvivakwa, mitswe inowanzoitika pamiganhu yezviyo uye mamwe mapeji echikamu. Izvi zvinodaro nekuti iyo forging deformation inowanzoitwa yakatenderedza yakaenzana simba tembiricha yesimbi zvinhu. Iyo deformation yemuganho wezviyo yakakura kwazvo, saka muganho wezviyo wezvinhu zvesimbi ndiko kusakosha kweindasitiri yesimbi, chikamu chechipiri uye zvisiri zvesimbi zvakaiswa munzvimbo. Pakupisa kwakanyanya, iyo yakaderera solubility point makemikari pamiganho yezviyo zvezvimwe zvigadzirwa zvinoburitsa kunyungudika, kwakasimba.

Deredzai deformation yepurasitiki yezvinhu zvakasvibiswa; Pakupisa kwepamusoro, zvimwe zvinhu (sarufa, mhangura, nezvimwewo) muzvinhu zvakapoteredza zvinopararira pamwe chete nemuganhu wezviyo kusvika mukati nekunze kwesimbi, zvichiita kuti pave nekuonekwa kusina kujairika kwechikamu chechipiri uye kupera simba kwemuganhu wezviyo. Kune imwe, zvigadzirwa zvesimbi zvakajairwa zvine hukama husina kunaka nezvimwe zvikamu nekuda kwekusiyana kwemuviri nemakemikari zvimiro zvezvikamu zviviri izvi.

Izvo zvigadzirwa zvinowanzo shandiswa mukugadzira kazhinji hazvina symmetrical. Naizvozvo, kutsemuka kwemahara forgings kunoitika uye kunokura pamwe nemuganho wezviyo kana muganho wechikamu panguva yekupisa kwekushisa kwekugadzira deformation.