Kuoma uye kuomeswa ndiwo maratidziro ekuita anoratidza kugona kwekudzima kweforgings, uye ndiwo zvakare hwaro hwakakosha hwekusarudza nekushandisa zvinhu.Kuomandiyo yakanyanya kuoma iyo aforginginogona kubudirira pasi pemamiriro ezvinhu akanaka.Chinhu chikuru chinogadzirisa kuoma kwedhigiriiforgingndiyo carbon content yeforging, kana kuti kunyanya iyo kabhoni yemukati yemhinduro yakasimba mu austenite panguva yekudzima nekudziya.Iyo yakakwirira iyo kabhoni yemukati iri, iyo yakakwirira yekuomesa dhigirii yesimbi ichave.Kunyange iyo alloying zvinhu musimbi zvine pesvedzero shoma pakuoma kwesimbi, zvine simba guru pakuoma kwesimbi.
Hardenability ndiyo hunhu hunosarudza hudzamu nekuoma kwekugovera kwesimbi yakaomeswa pasi pemamiriro akatarwa.Kureva kuti, kugona kuwana kudzika kweiyo yakaomeswa layer kana simbi yakaomeswa, inova inova pfuma yesimbi.Hardenability inonyatsoratidza nyore iyo austenite inogona kushandurwa kuita martensite kana simbi yadzimwa.Inonyanya kuenderana nekugadzikana kwe supercooled austenite musimbi, kana kune yakakosha quenching kutonhora mwero mu.simbi yakagadzirwa.

Mushure mekudzima, iyo metallographic chimiro uye kuomarara kugovera curves inocherechedzwa pane yemuchinjikwa chikamu chepakati inotonhorera.Mutsara wechikamu ndeye martensite uye yakasara yakakamurwa munzvimbo dzisiri dzeMartensite, kureva, chimiro chisati chadzima.Inogona kuonekwa kubva mumufananidzo kuti martensite nharaunda yesimbi bar iri kurudyi yakadzika, saka kuoma kwayo kuri nani, martensite kuoma kwezvinhu kuruboshwe kwakakwirira, ndiko kuti, kuomeswa kuri nani.Chiyero chekutonhora kwechikamu chekugadzira chinosiyana kubva munzvimbo nenzvimbo panguva yekudzima.Kukurumidza kutonhora kwepamusoro ndiyo yakanyanya, uye kukurumidza kutonhora kunoderera. sezvo pakati inosvika pakati.Kana iyo inotonhora yekumhanya yepasi uye yepakati yekugadzira yakakura kupfuura yakakosha kutonhora kumhanya kwesimbi yekugadzira, martensite chimiro chinogona kuwanikwa pamwe nechikamu chose chekugadzira, ndiko kuti, simbi yekugadzira inodzima zvachose. chikamu chepakati chiri pazasi peyakanyanya kutonhora mwero, martensite inowanikwa pamusoro uye isiri-Martensitic tishu inowanikwa mumoyo, zvichiratidza kuti simbi yekugadzira haina kudzimwa.
Mukugadzira, iyo inoshanda kuoma kwesimbiforgingsinowanzo ratidzwa nekudzika kweiyo inoshanda kuomesa layer, ndiko kuti, kureba kubva kumusoro kwakayerwa kusvika ku50% (chikamu chevhoriyamu) chemartensite. Zvinobatsira zvakare kuyera nhambwe yakatwasuka kubva pamusoro kusvika kune yakatsanangurwa kuomarara. ratidza kudzika kweiyo inoshanda kuomesa layer.Somuenzaniso, induction kuomarara kudzika (DS) uye kemikari kupisa kupisa kudzika (DC) kunoyerwa nenhambwe yakatwasuka kubva kumusoro kusvika pakuomarara kwakatsanangurwa.
Kugoverwa kwemagetsi zvikamu simba mushure mekudzima uye kupisa kweforgingsine kuomarara kwakasiyana kunoratidzwa mumufananidzo.Kuomarara kwemaitiro ayo emagetsi pamwe nechikamu chemuchinjiko ndiko kugovera kwakafanana, uye kudzima kupinda kweyakaderera, yakaderera michina yemoyo, kuoma kwakaderera.Izvi imhaka yekuti mushure mekushatirwa.forgings dzesimbinekuomarara kwepamusoro, chimiro chavo kubva kumusoro kusvika mukati chine granular tempered Soxhlet, ine yakakwira bremsstrahlability, nepo simbi ine yakaderera kuomarara ine flaccid ferrite pamwoyo wayo, ine yakaderera bremsstrahlability.
(kubva duan168.com)