I-Tempering iyinqubo yokwelapha ukushisa lapho i-workpiece icinywa futhi ishiselwe ekushiseni okungaphansi kwe-Ac1 (izinga lokushisa lokuqala le-pearlite kuya ku-austenite ukuguqulwa ngesikhathi sokushisa), eligcinwe isikhathi esithile, bese lipholiswa ekamelweni lokushisa.
Ukushisa kuvame ukulandelwa ukucisha, ngenhloso yoku:
(a) Qeda ingcindezi eyinsalela ekhiqizwa ngesikhathi sokucisha i-workpiece ukuze kuvinjelwe ukuguquguquka nokuqhekeka;
(b) Lungisa ubulukhuni, amandla, ipulasitiki, kanye nokuqina kwendawo yokusebenza ukuze kuhlangatshezwane nezidingo zokusebenza ezizosetshenziswa;
(c) Ukuhleleka okuzinzile nosayizi, ukuqinisekisa ukunemba;
(d) Thuthukisa futhi uthuthukise ukusebenza kokucubungula. Ngakho-ke, ukufudumala kuyinqubo yokugcina ebalulekile yokuthola ukusebenza okudingekayo kwe-workpiece. Ngokuhlanganisa ukucisha kanye nokushisa, izakhiwo ezidingekayo zemishini zingatholakala. [2]
Ngokwezinga lokushisa elipholile, ukufudumala kungahlukaniswa kube ukushisa okuphansi kwezinga lokushisa, ukushisa okuphakathi nendawo, kanye nokushisa okuphezulu.
Ukuhlukaniswa kwezigaba
Izinga lokushisa eliphansi
Ukushisa kwe-workpiece ku-150-250 °
Inhloso ukugcina ubulukhuni obuphezulu kanye nokumelana nokugqoka kwama-workpieces acishiwe, ukunciphisa ingcindezi esele kanye nokuqina ngesikhathi sokucisha.
I-martensite efudumele etholwe ngemva kokushisa ibhekisela esakhiweni esincane esitholakala ngesikhathi sokushisa okuphansi kwe-martensite ecishiwe. Izakhiwo zemishini: 58-64HRC, ubulukhuni obuphezulu nokumelana nokugqoka.
Ububanzi bohlelo lokusebenza: Isetshenziswa kakhulu ezinhlotsheni ezahlukahlukene zamathuluzi ensimbi ekhabhoni ephezulu, amathuluzi okusika, amathuluzi okulinganisa, isikhunta, amabhere aginqikayo, izingxenye ezicishiwe nezindawo ezicishiwe, njll. [1]
Izinga lokushisa elimaphakathi
Ukushisa kwe-workpiece phakathi kuka-350 no-500 ℃.
Inhloso ukuthola ukunwebeka okuphezulu kanye nephuzu lesivuno, ngokuqina okufanele. Ngemva kokushisa, kutholwa i-troostite efudumele, ebhekisela esakhiweni esiyiduplex se-ferrite matrix esakhiwe ngesikhathi sokushisa kwe-martensite, lapho ama-carbides ayindilinga amancane kakhulu (noma ama-cementite) asatshalaliswa ngaphakathi kwe-matrix.
Izakhiwo zikamshini: 35-50HRC, umkhawulo wokunwebeka okuphezulu, iphuzu lesivuno, nokuqina okuthile.
Ububanzi bohlelo lokusebenza: ikakhulukazi ezisetshenziselwa iziphethu, iziphethu, ama-forging dies, amathuluzi womthelela, njll. [1]
Ukushisa okuphezulu
Ukushisa kwama-workpieces ngaphezu kwe-500 ~ 650 ℃.
Inhloso ukuthola izakhiwo eziphelele zemishini ezinamandla amahle, ipulasitiki, nokuqina.
Ngemva kokushisa, i-sorbite evuthayo iyatholakala, ebhekisela esakhiweni esiyiduplex se-ferrite matrix esakhiwe ngesikhathi se-martensite tempering, lapho ama-carbides amancane ayindilinga (okuhlanganisa ne-cementite) asatshalaliswa ngaphakathi kwe-matrix.
Izakhiwo zikamshini: 25-35HRC, ezinezakhiwo ezinhle eziphelele zemishini.
Ububanzi bohlelo lokusebenza: Isetshenziselwa kakhulu izingxenye zesakhiwo ezibalulekile ezithwala umthwalo, njengezinduku zokuxhuma, amabhawudi, amagiya, nezingxenye zeshaft.
Inqubo yokwelapha ukushisa eyinhlanganisela yokucisha i-workpiece kanye nezinga lokushisa eliphezulu libizwa ngokuthi ukucisha nokushisa. Ukucisha nokushisa akukwazi ukusetshenziselwa ukwelashwa kokushisa kokugcina kuphela, kodwa futhi nokwelashwa kwangaphambili kokushisa kwezinye izingxenye ezinembayo noma izingxenye ezicishiwe zokungeniswa.
I-imeyili:oiltools14@welongpost.com
Grace Ma
Isikhathi sokuthumela: Nov-03-2023
