Kuyini ukwelashwa kokushisa nokucisha40Cr insimbi?
I-40Cr ithuthukisa ukuqina kwensimbi, ithuthukisa amandla ayo nokuzinza kwe-teering, futhi inezici ezinhle kakhulu zemishini.Ama-workpiece anobukhulu obukhulu be-cross-sectional noma ukulungiswa okubalulekile kufanele kusebenzise i-Cr steel, kodwa i-Cr steel inohlobo lwesibili lokufutheka.
Sibhekana kanjani nokwelashwa kokushisa okucishayo nokushisa kwezingxenye zokusebenza ezingu-40Cr kanye nemithetho yenqubo yepharamitha ehlukahlukene emsebenzini wangempela?
(1) Ngemuva kokucisha kanye nokwelashwa kokushisa kokushisa kwama-40Cr, ukupholisa uwoyela kufanele kusetshenziswe.Insimbi engu-40Cr inezinto ezinhle zokucisha, ingenziwa lukhuni ngokupholisa emafutheni, futhi ukuthambekela kwezingxenye zokusebenza ukonakala nokuqhekeka kuncane.Kodwa-ke, amabhizinisi amancane naphakathi angathungela izingcezu zokusebenza ezinokwakheka okungeyona inkimbinkimbi emanzini lapho ukufaka uphethiloli kuqinile, kodwa akukho mifantu etholakalayo.Nokho, abasebenzi kufanele balawule ngokuqinile amanzi nezinga lokushisa lawo ngokusekelwe kokuhlangenwe nakho kwawo.
(2) Ngemuva kokushisa, ubulukhuni be-workpiece engu-40Cr busephezulu kakhulu, futhi izinga lokushisa lesibili kufanele lenyuke ngo-20-50.Uma kungenjalo, kunzima ukunciphisa ubulukhuni.
(3) Ngemva kokushisa okuphezulu kwe-40Cr workpieces, umumo oyinkimbinkimbi upholiswa emafutheni futhi emanzini kalula ukuze kugwenywe umthelela wohlobo lwesibili lwe-teering brittleness.I-workpiece emva kokufutheka okusheshayo nokupholisa kufanele iphathwe ngokukhululeka kokucindezeleka uma kunesidingo.Kunezici ezintathu ezithinta ikhwalithi ye-workpiece elungisiwe, futhi izinga lomsebenzisi liyisici esibalulekile.Kukhona nezizathu ezahlukahlukene ezifana nemishini, izinto zokwakha, kanye nokucubungula ukulungiswa kwangaphambili.Sikholelwa ukuthi (1) ijubane le-workpiece elisuka esithandweni liye ethangini lokupholisa lihamba kancane, futhi izinga lokushisa le-workpiece engena emanzini lehlile ngaphansi kwephuzu elibalulekile le-Ar3, okuholela ekuboleni okuyingxenye kanye ne-microstructure engaphelele ye-workpiece. , engahlangabezani nezidingo zobulukhuni.Ngakho-ke, i-coolant yezingxenye ezincane kufanele inake isivinini, kuyilapho ama-workpieces amakhulu epholile, kuyadingeka ukubamba isikhathi.(2) Inani lesithando somlilo esincibilikisa i-workpiece kufanele libe elifanele, nezingqimba ezi-1-2 ezifanele.Lapho i-workpiece idlulana, ukushisa akulingani futhi ukuqina akulingani.(3) Ukuhlelwa kokungena kwamanzi endaweni yokusebenza kufanele kugcinwe kude.Ngenxa yokuqina kakhulu, ifilimu lomhwamuko eliseduze nendawo yokusebenza liyaphuka futhi livinjwe, okuholela ebuhleni obuphansi bomsebenzi womsebenzi.(4) Ukuvula isithando somlilo ukuze kucinywe akukwazi ukucisha ngokuphelele ngesikhathi esisodwa.Kudingekile ukuvala isithando somlilo phakathi nendawo bese ushisa kabusha ngokusho kwezinga lokushisa lokwehla esithandweni.Ukuqina kwezinto zokusebenza zangaphambili nangemuva ngemuva kokucisha kufanele kuhambisane.(5) Naka izinga lokushisa lamanzi apholisayo.U-10% wamanzi anosawoti angaphezu kuka-60 awakwazi ukusetshenziswa.Amanzi okupholisa kufanele angabi nakungcola okufana nowoyela nodaka.Uma kungenjalo, ubulukhuni obanele noma obungalingani bungenzeka.(6) Ubulukhuni bokulungisa obungalingani bezikhala ezingacutshunguliwe.Ukuze kuzuzwe izinga elihle lokulungisa, izinto ezingavuthiwe kufanele kube itiye elimahhadla, futhi ilulwane kufanele lisetshenziswe.(7) Ngemva kokulawulwa kwekhwalithi okuqinile, ubulukhuni buncipha ngamayunithi angu-1-3 ngemva kokucisha, futhi izinga lokushisa elishisayo lingalungiswa ukuze lihlangabezane nezidingo zobulukhuni.Kodwa-ke, ngemva komlilo, ubulukhuni be-workpiece babuphansi kakhulu, futhi yi-HRC250000 kuya ku-350000 kuphela eyayingavutha futhi.Akwenzeki ukwengeza kuphela izinga lokushisa eliphakathi nendawo noma eliphansi ukuze uhlangabezane nezidingo zomdwebo.Uma kungenjalo, ukubaluleka komlawuli kuzolahleka, okuholela emiphumeleni emibi kakhulu.
Isikhathi sokuthumela: Oct-08-2023