Kubva kuma1980, kurapwa kwecryogenic kwakashandiswa zvinobudirira kugadzirisasimende carbide.Zvidzidzo zvakawanda zvakaratidza kuti kurapwa kwecryogenic kune imwe mhedzisiro yakanaka pane zvemakanika zvivakwa, kupfeka kuramba, kucheka kuita, microstructure, uye kusara kwekushushikana mamiriro ecemented carbide.Kuburikidza nekuongorora kunoramba kuchiitwa nevatsvakurudzi, nhevedzano yetsika dzinoshanda dzakawanwa.uye mhedziso dzezvinorehwa nesainzi.
(1) Kurapa kweCryogenic kunogona kuvandudza simba rekukotama, kupfeka kuramba uye kucheka kuita kwesimende carbide, nokudaro zvichibudirira kuwedzera hupenyu hwebasa resimende zvishandiso zve carbide.Nekuongorora pesvedzero ye cryogenic treatment process parameters pa mechanical properties of cemented carbide, zvinotendwa kuti optimization effect ye cryogenic treatment haichinje linearly nekudzikira kwekushisa kwe cryogenic treatment uye kuwedzera kwekubata nguva.Zvemagiredhi chaiwo esimende carbide, kune yakanyanya kunaka cryogenic kurapwa maitiro, ayo anogona kuwana yakanakisa optimization maitiro pamutengo wakaderera.
(2) Mhedzisiro huru yekurapa cryogenic pane microstructure yesimende carbidendezvi: ① kushandura morphology yezviyo zvechikamu chakaoma - WC;② kukurudzira shanduko yemartensitic yechikamu chekubatanidza;③ yakanaka carbide zvimedu (eta phase) mune Yakapararira uye yakanaya pamusoro pezvinhu matrix.
(3) Iko martensite shanduko yechikamu chekubatanidza, kunaya kweiyo yakanaka carbides uye kuwedzera kweyakasara yekumanikidza kushushikana pamusoro pezvinhu zvemukati mushure mekurapwa kwe cryogenic kunogona kuvandudza zvakanyanya simba uye kupfeka kusagadzikana kwecemented carbide.Naizvozvo, kuvandudzwa kweiyo macroscopic zvimiro zvecemented carbide ndiyo mhedzisiro yezvakasanganiswa mhedzisiro yekusimbisa kwechikamu chekusimbisa uye kusimbisa kushushikana.
Nguva yekutumira: Mar-06-2024
