Ⅰ-Tšepe e sebetsang ka serame ea Cr12MoV ke eng?
Tšepe ea die e sebetsang ka mokhoa o batang ea Cr12MoV e hlahisoang ke zhongao ke ea sehlopha sa tšepe ea lisebelisoa tsa micro deformation e hanelang ho tsofala haholo, e khetholloang ka ho hanyetsa ho tsofala ho phahameng, ho thatafala, ho feto-fetoha ha micro, botsitso bo phahameng ba mocheso, matla a ho kobeha ho phahameng, le thepa e meng. Ke ea bobeli feela kamora tšepe e lebelo le phahameng 'me ke thepa ea bohlokoa bakeng sa ho hatakela, ho tšoara ka hlooho ho batang, le thepa e meng. Tšepe ea die ea Cr12MoV ke tšepe ea carbon molybdenum ledeburite e nang le khabone e tlase ho feta tšepe ea Crl2. Molybdenum le vanadium li eketsoa ho ntlafatsa ts'ebetso ea ts'ebetso e chesang, ho tiea ha tšusumetso le kabo ea carbide ea tšepe. Tšepe ea die ea Cr12MoV e na le khabone e tlase ho feta tšepe ea die ea Cr12. Ho eketsoa ha likarolo tse ncha tsa alloy ho ntlafatsa ketsahalo ea carbide e sa lekanang. Ho feta moo, molybdenum le molybdenum li ka fokotsa karohano ea carbide le ho ntlafatsa ho thatafala. Vanadium le vanadium li ka ntlafatsa lithollo le ho eketsa ho tiea, Ka hona, tšepe ea hlobo ea zhongao ea Cr12MoV e na le ho tiea ho hoholo, e nang le karolo e ka tlase ho 400mm e ka tingoang ka botlalo, 'me e ntse e ka boloka ho tiea ho hotle le ho hanyetsa ho tsofala ho 300-400 ℃. Ntle le moo, tšepe ea hlobo ea zhongao ea Cr12MoV e na le ho tiea ho betere ho feta lisebelisoa tse ling tsa sehlopha se tšoanang 'marakeng o akaretsang,' me monyetla oa phetoho ea bophahamo nakong ea ho tima o fokotsehile haholo. Ka hona, ho hanyetsa ho tsofala ha eona ho hoholo le thepa e ntle ea mechini e felletseng li etsa hore tšepe ea hlobo ea Jinbaicheng ea Cr12MoV e lokele haholoanyane ho etsa mefuta e fapaneng ea hlobo e nang le karolo e kholo e ka tingoang, sebopeho se rarahaneng, le ho mamella litšusumetso tse kholo, hammoho le lisebelisoa tse fapaneng tsa ho hatakela serame tlas'a maemo a boima a ho sebetsa, joalo ka ho phunya li-dies, ho kuta li-dies, ho rola li-dies, jj.
Ⅱ-Tataiso ea Tšebeliso ea Tšepe ea Cr12MoV Cold Working Die
① Cr12MoV e ka sebediswa ho etsa dibopeho tse rarahaneng tsa diboloko tse kobehileng, tse kobehileng, le tse kentsweng bakeng sa ho phunya dibopeho tse nang le botenya ba thepa>3mm. Ho kgothaletswa hore ho be le boima ba 58~62HRC ha ho etswa dibopeho tse kobehileng le 60~64HRC ha ho etswa dibopeho tse kobehileng.
② Bakeng sa tlhahiso ea hlobo ea punch le concave e hlokang ho hanyetsa ho tsofala haholo, ho khothaletsoa hore e be le thata ea 60 ~ 62HRC ha ho etsoa punch le 62 ~ 64HRC ha ho etsoa hlobo ea concave.
③ Bakeng sa tlhahiso ea liforomo tse kobehileng tse sa tsofaleng ka har'a liforomo tse tebileng tsa ho hula, ho khothaletsoa hore li be le boima ba 62 ~ 64HRC.
④ E sebedisetswa ho hlahisa dibopeho tse kobehileng, dibopeho tse kobehileng, le diboloko tse kentsweng tse hlokang ho hanyetsa ho tsofala haholo le dibopeho tse rarahaneng dibopehong tse kobehileng. Ho kgothaletswa hore ho be le boima ba 60-64HRC ha ho etswa dibopeho tse kobehileng, le 60-64HRC ha ho etswa dibopeho tse kobehileng.
⑤ Bakeng sa tlhahiso ea li-dies le li-dies tse batang tse tsoang likarolong tsa aluminium, ho khothaletsoa hore ho be le thata ea 60-62HRC ha ho etsoa li-dies, le 62-64HRC ha ho etsoa li-dies.
⑥ Ho kgothaletswa ho sebedisa boima ba 62~64HRC bakeng sa dibopeho tse kobehileng le tse kobehileng tse sebediswang ho etsa dibopeho tse batang tsa koporo.
⑦ Mefuta e kobehileng le e kobehileng e sebediswang bakeng sa mefuta e batang ya tshepe e sebediswang ho eketsa matla a yona e kgothaletswa hore e be thata ho 62 ~ 64HRC.
⑧ Lipoleiti tsa tšepe tsa selemo tse nang le karolo e boima ea 0.65% ~ 0.80% tse sebelisetsoang ho etsa khabone li na le boima ba 37 ~ 42HRC, tse fanang ka bophelo ba lipotoloho tse fihlang ho 150000.
⑨ Lipoleiti tsa tšepe tsa selemo tse nang le karolo e boima ea 0.65% ho isa ho 0.80% tse sebelisetsoang ho etsa khabone li na le boima ba 37-42HRC, 'me ka phekolo e eketsehileng ea nitriding, bophelo ba tsona ba tšebeletso bo ka fihla makhetlo a 400000.
Ⅲ-Ts'ebetso ea Cr12MoV Cold Working Die Steel:
Litlhaloso tsa ho nolofatsa hlobo e batang e ntšang: Sireletsa le ho futhumatsa hlobo ka li-filtration tsa tšepe mochesong oa 760-780 ℃ ka lihora tse 10, ka ho pholisa ha ontong le ho thatafala ha 196HBW. Ho thehoa ha extrusion e batang ho ka finyelloa ka mokhoa o bonolo.
Tlhaloso ea annealing e tloaelehileng ea isothermal spheroidizing: 850-870 ℃ × lihora tse 3-4, e pholisitsoe ka ontong ho fihlela ho 740-760 ℃ × lihora tse 4-5 tsa kalafo ea isothermal, ka thatafalo ea ho pholisa moea ≤ 241HBW, sehlopha sa eutectic carbide ≤ 3, mocheso o motle oa isothermal 740-76o ℃, le nako ≥ lihora tse 4-5.
Tlhaloso ea ho phunya ha spheroidizing: (860 ± 10) ℃ × lihora tse 2-4, ho pholisa ha sebōpi ka sekhahla sa ho pholisa sa 30 ℃/hora, (740 ± 10) ° C x lihora tse 4-6, ho pholisa butle ho fihlela ho 500-600 ℃ ka sebōpi, ho pholisa moea ka mor'a ho ntša metsi, boima ba 207-255HBW.
Litlhaloso tse akaretsang tsa ho tima le ho futhumatsa: mocheso oa ho tima 1000-1050 ℃, ho tima oli kapa ho e tima, ho thatafala 260HRC, mocheso oa ho futhumatsa 160-180, nako ea ho futhumatsa lihora tse 2, kapa mocheso oa ho futhumatsa 325-375 ° C, ho futhumatsa makhetlo a 2-3.
Mocheso o tlase oa ho tima le o khutlang ka tlase oa ho tima: 950 ℃ -1040 ℃, mocheso oa ho futhumatsa o ka bang 200 ℃, mocheso oa bobeli oa ho futhumatsa.
Mocheso o phahameng oa ho tima le ho khutlisa mocheso o phahameng: 1050-1100 ℃, mocheso oa ho futhumatsa o ka bang 520 ℃, mocheso oa bobeli oa ho futhumatsa. Mokhoa oa bobeli oa ho tiisa o sebelisoang bakeng sa ho tima mocheso o phahameng le ho sebelisa hape ho phahameng o ntlafatsa ho tiea, empa lithollo li tla hola.
Kalafo ea cryogenic: Tšepe ea Cr12MoV e feta kalafong ea cryogenic, e ka bakang li-carbide tse qhalakaneng haholo tsa ultrafine ho tsoa martensite e timang, ebe li-carbide tsena tse ultrafine li ka fetoloa li-carbide kamora ho futhumatsoa mochesong o tlase oa 200 ℃. Martensite e se nang kalafo ea cryogenic e baka feela karolo e nyane ea carbide libakeng tse ling tsa lehae kamora mollo o tlase oa potoloho ea mocheso.
Zhongao e sebelisa mokhoa oa ho phekola mocheso oa lik'hemik'hale mochesong o tlase, o bolokang ho tiea ho hoholo le ho hanyetsa ho tsofala ha tšepe ea Cr12MoV. Mealo e meraro ea kalafo ea mocheso oa lik'hemik'hale mochesong o tlase e sebelisoang haholo, e leng ion nitriding, gas nitrocarburizing, le salt bath sulfur cyanide co nitriding, e na le khanyetso e kholo le ho khomarela, 'me salt bath sulfur cyanide co nitriding e le eona e ntle ka ho fetisisa.
Bophelo ba ts'ebeletso ea die ea ho taka bakeng sa lisebelisoa tsa tšepe tse sa ruseng tsa zhongao tsa Cr12MoV, kamora kalafo ea nitrocarburization ea khase, bo fihla likotoana tse fetang 30000, e leng nako e fetang makhetlo a 10 ho feta ea hlobo e tšoanang e tšoaroang ka ho tima le ho futhumatsa ka mokhoa o tloaelehileng.
Nako ea poso: Mots'eanong-23-2024