Ⅰ-Cr12MoV Cold Working Die Steel ke eng
Cr12MoV cold working die steel steel e hlahisoang ke zhongao ke ea sehlopha sa tšepe ea tšepe e sa sebetseng hantle ea ho roala, e tšoauoang ka khanyetso e phahameng ea ho roala, ho thatafala, deformation e nyane, botsitso bo phahameng ba mocheso, matla a ho kobeha a phahameng le thepa e meng.Ke ea bobeli ka mor'a tšepe ea lebelo le phahameng 'me ke thepa ea bohlokoa bakeng sa ho hatakela, lihlooho tse batang le lisebelisoa tse ling.Cr12MoV die steel 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 e chesang ea ts'ebetso, ho ba le tšusumetso e matla le kabo ea carbide ea tšepe.Cr12MoV die steel e na le khabone e tlase ho feta Cr12 die steel.Ho eketsoa ha likarolo tse ncha tsa alloy ho ntlafatsa ts'ebetso 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 hloekisa lijo-thollo le ho eketsa boima, Ka hona, tšepe ea hlobo ea zhongao ea Cr12MoV e thatafalloa haholo, e nang le karolo e ka tlase ho 400mm e ka tingoang ka ho feletseng, 'me e ntse e ka boloka boima bo botle le ho apara ho hanyetsa ho 300-400 ℃.Ntle le moo, tšepe ea hlobo ea zhongao ea Cr12MoV e na le boima bo betere ho feta lisebelisoa tse ling tsa sehlopha se le seng 'marakeng o akaretsang, mme monyetla oa ho fetoha ha molumo nakong ea ho tima o fokotsehile haholo.Ka hona, khanyetso ea eona e phahameng ea ho roala le thepa e ntle e felletseng ea mochini e etsa hore tšepe ea mofuta oa Jinbaicheng ea Cr12MoV e be e loketseng ho etsa liforomo tse fapaneng tse nang le likarolo tse kholo, sebopeho se rarahaneng, le ho mamella litlamorao tse kholo, hammoho le lisebelisoa tse fapaneng tsa setempe tlas'a maemo a boima a ho sebetsa, joalo ka ho phunya hoa shoa, ho poma hoa shoa, rolling dies, jj.
Ⅱ-Application Guidance of Cr12MoV Cold Working Die Steel
① Cr12MoV e ka sebelisoa ho etsa libopeho tse rarahaneng tsa convex, concave, le ho kenya li-blocks bakeng sa ho phunya hlobo ka botenya ba thepa> 3mm.Ho kgothaletswa ho ba le boima ba 58 ~ 62HRC ha ho etsoa hlobo ea convex le 60 ~ 64HRC ha ho etsoa li-concave hlobo.
② Bakeng sa tlhahiso ea li-punch le li-concave hlobo tse hlokang ho hanyetsa ho apara ho phahameng, ho kgothaletswa ho ba le boima ba 60 ~ 62HRC ha ho etsoa punch le 62 ~ 64HRC ha ho etsoa hlobo ea concave.
③ Bakeng sa tlhahiso ea liforomo tsa concave tse sa sebetseng ka har'a hlobo e tebileng ea ho taka, ho khothaletsoa ho ba le boima ba 62 ~ 64HRC.
④ E sebelisetsoa ho hlahisa hlobo ea convex, hlobo ea concave, le ho kenya li-blocks tse hlokang ho se mamelle ka matla le libopeho tse rarahaneng ka har'a hlobo e kobehang.Ho kgothaletswa ho ba le boima ba 60-64HRC ha ho etsoa hlobo ea convex, le 60-64HRC ha ho etsoa hlobo ea concave.
⑤ Bakeng sa tlhahiso ea li-extrusion tse batang li shoa le ho shoa bakeng sa likarolo tsa aluminium, ho kgothaletswa ho ba le boima ba 60-62HRC ha o etsa die, le 62-64HRC ha o etsa lefu.
⑥ Ho khothaletsoa ho sebelisa boima ba 62 ~ 64HRC bakeng sa hlobo ea convex le concave e sebelisetsoang ho etsa hlobo e batang ea koporo.
⑦ The convex le concave hlobo e sebelisoang bakeng sa hlobo e batang ea tšepe ea extrusion e khothalletsoa hore e be le boima ba 62 ~ 64HRC.
⑧ Lipoleiti tsa tšepe tsa selemo tse nang le karolo e boima ea 0.65% ~ 0.80% tse sebelisetsoang ho etsa carbon li na le boima ba 37 ~ 42HRC, li fana ka nako ea bophelo ho fihlela ho 150000 cycles.
⑨ Lipoleiti tsa tšepe tsa selemo tse nang le karolo e boima ea 0.65% ho 0.80% tse sebelisetsoang ho etsa carbon li na le boima ba 37-42HRC, 'me ka phekolo e eketsehileng ea nitriding, bophelo ba bona ba tšebeletso bo ka fihla makhetlo a 400000.
Ⅲ-Ho sebetsa ha Cr12MoV Cold Working Die Steel:
Litlhaloso tsa ho nolofatsa hlobo e batang ea extrusion: Sireletsa le ho futhumatsa hlobo ka likhoele tsa tšepe ka mocheso oa 760-780 ℃ ka lihora tse 10, ka pholile ea sebōpi le boima ba 196HBW.Cold extrusion forming e ka finyelloa hantle.
Litlhaloso bakeng sa annealing e tloaelehileng ea isothermal spheroidizing: 850-870 ℃ × 3-4 lihora, e pholile ka sebōping ho isa ho 740-760 ℃ × lihora tse 4-5 tsa phekolo ea isothermal, ka boima ba moea o pholileng ≤ 241HBW, eutectic optimal 3 carbide isothermal. mocheso 740-76o ℃, le nako ≥ lihora tse 4-5.
Tlhaloso ea spheroidizing annealing: (860 ± 10) ℃ × lihora tse 2-4, pholileng ea sebōpi ka tekanyo e pholileng ea 30 ℃ / hora, (740 ± 10) ° C x lihora tse 4-6, butle-butle e pholile ho 500-600 ℃ ka sebōpi, moea o pholileng ka mor'a ho tsoa, boima ba 207-255HBW.
Litlhaloso tse akaretsang tsa ho tima le ho futhumatsa: mocheso oa ho tima 1000-1050 ℃, ho tima kapa ho tima oli, boima ba 260HRC, mocheso oa mocheso oa 160-180, nako ea ho futhumatsa lihora tse peli, kapa mocheso oa mocheso oa 325-375 ° C, ho futhumatsa makhetlo a 2-3.
Mocheso o fokolang oa ho tima le o fokolang o khutlang: 950 ℃ -1040 ℃, mocheso oa mocheso o pota-potileng 200 ℃, mocheso oa bobeli.
Mocheso o phahameng oa quenching le o khutlang o phahameng oa ho tima: 1050-1100 ℃, mocheso oa mocheso o pota-potile 520 ℃, mocheso oa bobeli.Mokhoa oa bobeli oa ho thatafatsa o sebelisoang bakeng sa ho tima ho hoholo le ho tsosolosa ho phahameng o ntlafatsa ho thatafala, empa lijo-thollo li tla hōla.
Kalafo ea Cryogenic: tšepe ea Cr12MoV e fumana kalafo ea cryogenic, e ka fokotsang li-carbide tsa ultrafine tse qhalakaneng haholo ho tloha ho quenched martensite, ebe li-carbide tsena tsa ultrafine li ka fetoloa li-carbides kamora 200 ℃ mocheso o tlase oa mocheso.The martensite ntle le kalafo cryogenic feela precipitates palo e nyenyane ea carbide libakeng tse ling tsa sebaka ka mor'a mocheso tlaase circumferential mollo.
zhongao e sebelisa mokhoa o tlaase oa mocheso oa lik'hemik'hale oa mocheso oa lik'hemik'hale, o bolokang boima bo phahameng le ho roala ho hanyetsa ha tšepe ea Cr12MoV.Likarolo tse tharo tse sebelisoang khafetsa mochesong o tlase oa mocheso oa lik'hemik'hale, e leng ion nitriding, nitrocarburizing ea khase, le bate ea letsoai ea sulfur cyanide co nitriding, li na le tšusumetso e kholo le ho khomarela, 'me bateng ea letsoai sulfur cyanide co nitriding ke eona e ntle ka ho fetisisa.
Bophelo ba tšebeletso ea setšoantšo bo shoa bakeng sa lisebelisoa tsa tšepe tse sa hloekang tsa zhongao tsa Cr12MoV, ka mor'a phekolo ea khase ea nitrocarburization, e fihla ho likotoana tse fetang 30000, e leng nako e fetang 10 ho feta ea hlobo e tšoanang e tšoaroang ka mokhoa o tloaelehileng oa ho tima le ho futhumatsa.
Nako ea poso: May-23-2024