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 uye kupisa. 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 kudzika uye kuomarara kugoverwa kwesimbi yakaomeswa pasi pemamiriro akatarwa.Kureva kuti, kugona kuwana kudzika kweiyo yakaomeswa layer kana simbi yakaomeswa, inova inherent pfuma yesimbi.Hardenability inonyatsoratidza nyore iyo austenite inogona kushandurwa kuita martensite kana simbi ichidzimwa.Iyo inonyanya kuenderana neyakaomesesa kana kudzikamisa simbi. kutonhora rate mukatisimbi yakagadzirwa.

Mushure mekudzima, iyo metallographic chimiro uye kuomarara kwekugovera curves inocherechedzwa pamuchinjiko wechikamu chekutonhora. Mutsara wechikamu ndeye martensite uye yakasara yakakamurwa munzvimbo dzisiri dzeMartensite, kureva, chimiro chisati chadzima.Inogona kuonekwa kubva pamufananidzo kuti martensite nharaunda yesimbi bar kurudyi yakadzika, saka kuoma kwayo kuri nani, martensite kuoma kwezvinhu kuruboshwe kwakakwirira, ndiko kuti, kuomeswa kuri nani.Chiyero chekutonhora kwenzvimbo yekutonhora kubva panzvimbo yekutonhora kusvika kunzvimbo yekutonhora. ndiyo yakanyanya, uye kumhanya kwekutonhodza kunodzikira sezvo pakati panosvika pakati. Kana kukurumidza kutonhora kwepamusoro uye nechepakati pekugadzira yakakura kudarika yakakosha kutonhora kwesimbi yekugadzira simbi, martensite chimiro chinogona kuwanikwa pamwe chete nechikamu chese chekugadzira, ndiko kuti, simbi yekugadzira inodzimwa zvachose.Kana chikamu chepakati chiri pasi pehuwandu hwekutonhora kwakanyanya, martensite inowanikwa pamusoro uye isiri-Martensitic tissue inowanikwa mumoyo, zvichiratidza kuti simbi yave isiri iyo.
Mukugadzira, iyo inoshanda kuoma kwesimbiforgingsinowanzoratidzwa nehupamhi hwechigadziko chekuomesera chinoshanda, ndiko kuti, kureba kubva kumusoro kwakayerwa kusvika ku50% (chikamu chevhoriyamu) chemartensite.Inobatsirawo kuyera kureba kubva kumusoro kusvika kune kuomarara kwakatsanangurwa kuratidza kudzika kweiyo inoshanda kuomarara kudzika (DS) uye kemikari kupisa kwepasi kudzika (DC) kunoyerwa kureba kwakatsanangurwa kubva pakaoma.
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)