Ntchito ndi Makhalidwe a Cr12MoV Cold Working Die Steel

Ⅰ-Kodi Cr12MoV Cold Working Die Steel ndi chiyani

Cr12MoV ozizira ntchito die zitsulo opangidwa ndi zhongao ndi m'gulu la mkulu kuvala zosagwira yaying'ono deformation chida chitsulo, amene amakhala ndi kukana mkulu kuvala, hardability, yaying'ono mapindikidwe, mkulu matenthedwe bata, mkulu kupinda mphamvu, ndi zina.Ndi yachiwiri kwa chitsulo chothamanga kwambiri ndipo ndi chinthu chofunika kwambiri popondaponda, mitu yozizira, ndi zipangizo zina.Cr12MoV die steel ndi chitsulo cha carbon molybdenum ledeburite chokhala ndi mpweya wocheperako kuposa Crl2 chitsulo.Molybdenum ndi vanadium amawonjezedwa kuti apititse patsogolo ntchito yotentha, kulimba kwamphamvu komanso kugawa kwachitsulo cha carbide.Cr12MoV die steel ili ndi mpweya wocheperako kuposa Cr12 die steel.Kuphatikizika kwa zinthu zatsopano za alloy kumawongolera zochitika za carbide yosagwirizana.Kuphatikiza apo, molybdenum ndi molybdenum amatha kuchepetsa tsankho la carbide ndikuwongolera kuuma.Vanadium ndi vanadium zimatha kuyeretsa mbewu ndikuwonjezera kulimba, Chifukwa chake, chitsulo cha zhongao cha Cr12MoV chimakhala cholimba kwambiri, chokhala ndi gawo lotsika pansi pa 400mm lomwe limatha kuzimitsidwa, ndipo limatha kukhalabe ndi kuuma bwino komanso kuvala kukana pa 300-400 ℃.Kupatula apo, chitsulo cha zhongao cha Cr12MoV cholimba chimakhala cholimba kuposa zida zina zamtundu womwewo pamsika wamba, ndipo kuthekera kwa kusintha kwa voliyumu pakuzimitsa kumachepetsedwa kwambiri.Choncho, kukana kwake kuvala kwapamwamba komanso makina abwino opangira makina kumapangitsa Jinbaicheng's Cr12MoV zitsulo kukhala zoyenera kupanga nkhungu zosiyanasiyana zokhala ndi gawo lalikulu, mawonekedwe ovuta, komanso kupirira zovuta zazikulu, komanso zida zosiyanasiyana zopondaponda pansi pazifukwa zolemetsa, monga kukhomerera kufa, kudula kufa, kugubuduza kufa, etc. Chojambula chakuya chachitsulo, macheka ozungulira, zida zoyezera ndi zida zoyezera, kufa kwa ulusi, etc.

Ⅱ-Application Guidance of Cr12MoV Cold Working Die Steel

① Cr12MoV itha kugwiritsidwa ntchito kupanga mawonekedwe ovuta a convex, concave, ndi kuyika midadada yokhomerera nkhungu ndi makulidwe azinthu> 3mm.Ndikoyenera kukhala ndi kulimba kwa 58 ~ 62HRC popanga ma convex ndi 60 ~ 64HRC popanga ma concave.

② Pakupanga nkhonya ndi concave nkhungu zomwe zimafuna kukana kuvala kwakukulu, tikulimbikitsidwa kukhala ndi kuuma kwa 60 ~ 62HRC popanga nkhonya ndi 62 ~ 64HRC popanga nkhungu ya concave.

③ Kuti apange mawonekedwe a concave osamva kuvala muzojambula zakuya, tikulimbikitsidwa kukhala ndi kuuma kwa 62 ~ 64HRC.

④ Amagwiritsidwa ntchito popanga makulidwe opindika, ma concave, ndikuyika midadada yomwe imafunikira kukana kuvala kwambiri komanso mawonekedwe ovuta pakumapindika.Ndikofunikira kukhala ndi kuuma kwa 60-64HRC popanga ma convex, ndi 60-64HRC popanga ma concave.

⑤ Pakupanga kuzizira kozizira kumafa ndikufera mbali za aluminiyamu, tikulimbikitsidwa kukhala ndi kuuma kwa 60-62HRC popanga kufa, ndi 62-64HRC popanga kufa.

⑥ Ndikofunikira kugwiritsa ntchito kulimba kwa 62 ~ 64HRC pamiyendo ya convex ndi concave yomwe imagwiritsidwa ntchito popanga zisankho zozizira zamkuwa.

⑦ Mitundu ya convex ndi concave yomwe imagwiritsidwa ntchito popanga zitsulo zoziziritsa kuzizira zimalimbikitsidwa kuti zikhale zolimba za 62 ~ 64HRC.

⑧ Zitsulo zachitsulo zam'madzi zokhala ndi gawo lalikulu la 0.65% ~ 0.80% zomwe zimagwiritsidwa ntchito popanga kaboni zimakhala ndi kuuma kwa 37 ~ 42HRC, zomwe zimapereka moyo wautali mpaka 150000.

⑨ Mbale zachitsulo za masika zokhala ndi gawo lalikulu la 0.65% mpaka 0.80% zomwe zimagwiritsidwa ntchito popanga kaboni zimakhala ndi kuuma kwa 37-42HRC, ndipo ndi chithandizo chowonjezera cha nitriding, moyo wawo wautumiki ukhoza kufika nthawi 400000.

Ⅲ-Kukonza kwa Cr12MoV Cold Working Die Steel:

Kufotokozera kwa kufewetsa nkhungu yoziziritsa kuzizira: Tetezani ndikuwotcha nkhungu ndi zosefera zachitsulo pa kutentha kwa 760-780 ℃ kwa maola 10, ndikuzizira kwa ng'anjo ndi kuuma kwa 196HBW.Cold extrusion kupanga chingapezeke bwino.

Specification wa wamba isothermal spheroidizing annealing: 850-870 ℃ × 3-4 maola, utakhazikika mu ng'anjo kuti 740-760 ℃ × 4-5 maola mankhwala isothermal, ndi mpweya kuzizira kuuma kuuma ≤ 241HBW, kalasi mulingo woyenera kwambiri ℃ carbide isothermal 3 kutentha 740-76o ℃, ndi nthawi ≥ 4-5 maola.

Kufotokozera kwa spheroidizing annealing: (860 ± 10) ℃ × 2-4 maola, kuzirala kwa ng'anjo pamlingo wozizira wa 30 ℃ / ola, (740 ± 10) ° C x 4-6 maola, kuzirala pang'onopang'ono mpaka 500-600 ℃ ndi ng'anjo, kuziziritsa kwa mpweya pambuyo potulutsa, kuuma 207-255HBW.

General kuzimitsa ndi kutentha specifications: kuzimitsa kutentha 1000-1050 ℃, kuzimitsa mafuta kapena kuzimitsa, kuuma 260HRC, tempering kutentha 160-180, tempering nthawi 2 hours, kapena tempering kutentha 325-375 ° C, kutentha 2-3 zina.

Low kuzimitsa ndi otsika kubwerera kuzimitsa kutentha: 950 ℃ -1040 ℃, tempering kutentha ndi mozungulira 200 ℃, yachiwiri kutentha.

High kuzimitsa ndi mkulu kubwerera kuzimitsa kutentha: 1050-1100 ℃, kutentha kutentha ndi kuzungulira 520 ℃, yachiwiri kutentha.Njira yachiwiri yowumitsa yomwe imagwiritsidwa ntchito pozimitsa kwambiri ndikubwezeretsanso kwambiri imapangitsa kuuma, koma mbewu zimakula.

Chithandizo cha Cryogenic: Chitsulo cha Cr12MoV chimalandira chithandizo cha cryogenic, chomwe chimatha kutulutsa ma ultrafine carbides omwazika kwambiri kuchokera ku martensite wozimitsidwa, kenako ma ultrafine carbides amatha kusinthidwa kukhala ma carbides pambuyo pa 200 ℃ kutentha kotsika.Martensite popanda chithandizo cha cryogenic amangowonjezera pang'ono carbide m'madera ena am'deralo pambuyo pa kutentha kochepa kwa moto wozungulira.

zhongao amatengera njira yochepetsera kutentha kwa mankhwala, yomwe imasunga kuuma kwakukulu ndi kukana kwachitsulo cha Cr12MoV.Zigawo zitatu zomwe zimagwiritsidwa ntchito nthawi zambiri ndi ion nitriding, gasi nitrocarburizing, ndi bath bath sulfure cyanide co nitriding, zimakhudzidwa kwambiri ndi kukana komanso kumamatira, zosambira zamchere za sulfure cyanide co nitriding kukhala zabwino kwambiri.

Moyo wautumiki wa zojambulazo umafera ziwiya zitsulo zosapanga dzimbiri za zhongao za Cr12MoV, pambuyo pa chithandizo cha mpweya wa nitrocarburization, umafika pazidutswa 30000, zomwe ndi zotalika nthawi 10 kuposa zomwe zimaumba zofananira zomwe zimathiridwa ndi kuzimitsa ndi kutenthetsa wamba.