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45 # wopanda zitsulo chitoliro fakitale malonda mwachindunji

Kufotokozera Kwachidule:

45 # chitoliro chosasunthika chachitsulo pambuyo pozimitsa ndi kutentha chimakhala ndi zinthu zabwino zamakina ndipo chimagwiritsidwa ntchito m'magawo osiyanasiyana ofunikira, makamaka ndodo zolumikizira, mabawuti, magiya ndi ma shaft omwe amagwira ntchito mosinthasintha.


Tsatanetsatane wa Zamalonda

Zolemba Zamalonda

Kufotokozera

45 # chitoliro chosasunthika chachitsulo pambuyo pozimitsa ndi kutentha chimakhala ndi zinthu zabwino zamakina ndipo chimagwiritsidwa ntchito m'magawo osiyanasiyana ofunikira, makamaka ndodo zolumikizira, mabawuti, magiya ndi ma shaft omwe amagwira ntchito mosinthasintha. Komabe, kuuma kwapamwamba kumakhala kochepa komanso sikutha kuvala. Kuzimitsa ndi kutentha + kuzimitsa pamwamba kungagwiritsidwe ntchito kukonza kuuma kwa magawo.

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Analimbikitsa kutentha kutentha mankhwala: normalizing 850, quenching 840, tempering 600.

Chitsulo cha 45 ndi chitsulo chapamwamba kwambiri cha carbon structural cholimba chochepa komanso kudula kosavuta. Nthawi zambiri amagwiritsidwa ntchito ngati mawonekedwe, kuwombera, positi yowongolera, ndi zina zambiri mu nkhungu, koma iyenera kutenthedwa.

1. Chitsulo cha 45 chimakhala choyenera ngati kuuma kwake kuli kwakukulu kuposa HRC55 (mpaka HRC62) mutatha kuzimitsa komanso musanapse.

Kulimba kwapamwamba kwambiri pakugwiritsa ntchito ndi HRC55 (high frequency quenching hrc58).

2. Njira yochizira kutentha kwa carburizing ndi kuzimitsa sikuyenera kutengedwa pazitsulo 45.

Zigawo zozimitsidwa ndi zowuma zimakhala ndi makina abwino ophatikizana ndipo zimagwiritsidwa ntchito kwambiri m'magawo osiyanasiyana ofunikira, makamaka ndodo zolumikizira, mabawuti, magiya ndi ma shaft omwe amagwira ntchito mosinthasintha. Komabe, kuuma kwapamwamba kumakhala kochepa komanso sikutha kuvala. Kuzimitsa ndi kutentha + kuzimitsa pamwamba kungagwiritsidwe ntchito kukonza kuuma kwa magawo.

Chithandizo cha carburizing nthawi zambiri chimagwiritsidwa ntchito pazigawo zolemetsa zokhala ndi mphamvu zogwira ntchito komanso zosagwira ntchito pachimake, ndipo kukana kwake kumakhala kokulirapo kuposa kuzimitsa ndi kuzimitsa + pamwamba. Mpweya wa carbon pamwamba ndi 0.8-1.2%, ndipo pachimake nthawi zambiri ndi 0.1-0.25% (0.35% muzochitika zapadera). Pambuyo pa chithandizo cha kutentha, pamwamba pakhoza kupeza kuuma kwakukulu (HRC58-62), kuuma kwapakati komanso kukana mphamvu.

Ngati chitsulo cha 45 chapangidwa ndi carburized, martensite yolimba komanso yopunduka idzawonekera pachimake pambuyo pozimitsa, zomwe zidzataya mwayi wa chithandizo cha carburizing. Mpweya wa kaboni wazinthu zokhala ndi carburizing siwokwera, ndipo mphamvu yapakati imatha kufika pamwamba kwambiri pa 0.30%, yomwe siigwiritsidwe ntchito. 0.35% sanawonepo zitsanzo, zomwe zimangoyambitsidwa m'mabuku ophunzirira. Njira yozimitsira ndikuwotcha + kuzimitsa kwapamwamba kwambiri kumatha kutengedwa, ndipo kukana kuvala kumakhala koyipa pang'ono kuposa carburizing.

The analimbikitsa kutentha mankhwala dongosolo 45 zitsulo zotchulidwa GB / t699-1999 ndi 850 ℃ normalizing, 840 ℃ quenching ndi 600 ℃ kutentha, ndi zokolola mphamvu ≥ 355MPa.

Malingana ndi GB / t699-1999, mphamvu yachitsulo ya 45 ndi 600MPa, mphamvu zokolola ndi 355MPa, elongation ndi 16%, kuchepetsa dera ndi 40%, ndipo mphamvu yamphamvu ndi 39j. 1, Ntchito, mawonekedwe ndi luso la magawo a shaft

Chigawo cha shaft ndi chimodzi mwazinthu zomwe nthawi zambiri zimakumana ndi makina. Amagwiritsidwa ntchito makamaka kuthandizira magawo opatsirana, kufalitsa torque ndi katundu wa chimbalangondo. Mbali za shaft ndi zigawo zozungulira, zomwe kutalika kwake ndi kwakukulu kuposa m'mimba mwake. Nthawi zambiri amapangidwa ndi mawonekedwe akunja a cylindrical, pamwamba pa conical, dzenje lamkati, ulusi ndi nkhope yofananira ya shaft yokhazikika. Malinga ndi mawonekedwe osiyanasiyana, mbali za shaft zitha kugawidwa kukhala optical axis, stepped axis, hollow axis ndi crankshaft.

Shaft yokhala ndi chiŵerengero chochepera 5 imatchedwa shaft yaifupi, ndipo shaft yokhala ndi chiŵerengero chachikulu kuposa 20 imatchedwa shaft yowonda. Mitsinje yambiri imakhala pakati pa ziwirizi.

Mtsinjewo umathandizidwa ndi kubereka, ndipo gawo la shaft lomwe likugwirizana ndi kubereka limatchedwa magazini. Magaziniyi ndiye chizindikiro cha shaft, ndipo kulondola kwake ndi mawonekedwe ake amayenera kukhala apamwamba. Zofunikira zake zaukadaulo nthawi zambiri zimapangidwa molingana ndi ntchito zazikulu komanso momwe amagwirira ntchito shaft, nthawi zambiri kuphatikiza zinthu zotsatirazi:

1.Kuti mudziwe malo a shaft, magazini yomwe ili ndi ntchito yothandizira kulondola kwazithunzi nthawi zambiri imafuna kulondola kwambiri (it5 ~ it7). Nthawi zambiri, kulondola kwapang'onopang'ono kwa shaft magazine pakusonkhanitsira magawo opatsirana ndi otsika (IT6 ~ it9).

2.Kulondola kwazithunzi za geometric kulondola kwa magawo a shaft makamaka amatanthauza kuzungulira ndi cylindricity ya magazini, chulucho chakunja, dzenje la Morse taper, ndi zina zambiri, kulolerana kwake kumangokhala kulolerana kwazithunzi. Kwa malo ozungulira amkati ndi akunja omwe ali ndi zofunikira zolondola kwambiri, kupatuka kololedwa kudzalembedwa pajambula.

3.Kulondola kwamalo komwe kumafunikira kulondola kwa magawo a shaft kumatsimikiziridwa makamaka ndi malo ndi ntchito ya shaft mumakina. Kawirikawiri, zofunikira za coaxiality za Journal of the assembled transmission parts pamagazini yothandizira zidzatsimikiziridwa, apo ayi kufalikira kwa ziwalo zopatsirana (magiya, ndi zina zotero) zidzakhudzidwa ndipo phokoso lidzapangidwa. Kwa ma shaft olondola wamba, kutulutsa kwa ma radial kwa gawo la shaft yokwerera ku magazini yothandizira nthawi zambiri kumakhala 0.01 ~ 0.03mm, ndipo pamiyendo yolondola kwambiri (monga ma shaft akulu), nthawi zambiri amakhala 0.001 ~ 0.005mm.

4.Kukula kwapakati kwa shaft m'mimba mwake komwe kumayenderana ndi magawo opatsirana nthawi zambiri kumakhala ra2.5 ~ 0.63 μ m. Kukula kwapamtunda kwa tsinde lothandizira lomwe limafanana ndi mayendedwe ake ndi Ra0.63 ~ 0.16 μm.

Zopanda kanthu ndi zida za magawo a shaft

1.Mbali za shaft. Malinga ndi zofunikira zogwiritsira ntchito, mtundu wopanga, zida ndi kapangidwe kake, mafomu opanda kanthu monga mipiringidzo ndi forgings amatha kusankhidwa pazigawo za shaft. Kwa shaft yomwe ili ndi kusiyana pang'ono m'mimba mwake yakunja, nthawi zambiri imayendetsedwa ndi bar; Pakuti anaponda shafts kapena mitsinje yofunika ndi kusiyana lalikulu m'mimba mwake akunja bwalo, forgings nthawi zambiri amasankhidwa, amene osati amapulumutsa zipangizo, amachepetsa ntchito ya Machining, komanso bwino makina katundu.

Malinga ndi masikelo osiyanasiyana opanga, njira zopangira zopanda kanthu zimaphatikizirapo kupangira kwaulere ndi kufa. Kupanga kwaulere nthawi zambiri kumagwiritsidwa ntchito popanga magulu ang'onoang'ono ndi apakatikati, ndipo kufa kwakufa kumagwiritsidwa ntchito popanga zambiri.

2. Zida za shaft mbali za shaft zimasankha zida zosiyanasiyana malinga ndi momwe zimagwirira ntchito ndikugwiritsa ntchito zofunikira ndikutengera mitundu yosiyanasiyana yochizira kutentha (monga kuzimitsa ndi kutentha, kukhazikika, kuzimitsa, etc.) kuti mupeze mphamvu, kulimba komanso kukana kuvala.

Chitsulo cha 45 ndi chinthu chodziwika bwino pamagawo a shaft. Ndizotsika mtengo. Pambuyo quenching ndi tempering (kapena normalizing), akhoza kupeza bwino kudula ntchito, mkulu mphamvu ndi toughness ndi zina mabuku mawotchi katundu. Kuuma kwa pamwamba pambuyo kuzimitsa kumatha kufika 45 ~ 52hrc.

40Cr ndi zitsulo zina zopangira ma alloy ndizoyenera magawo a shaft ndi mwatsatanetsatane wapakatikati komanso kuthamanga kwambiri. Pambuyo kuzimitsa, kutentha ndi kuzimitsa, mtundu uwu wa chitsulo uli ndi katundu wabwino wamakina.

Kunyamula zitsulo GCr15 ndi zitsulo masika 65Mn, pambuyo kuzimitsa ndi kutentha ndi pamwamba pamwamba pafupipafupi kuzimitsa, pamwamba kuuma kukhoza kufika 50 ~ 58hrc, ndi kukhala mkulu kukana kutopa ndi bwino kuvala kukana. Amatha kupanga ma shaft olondola kwambiri.

38crmoaia nitrided zitsulo zitha kusankhidwa kuti zikhale zopotera zida zolondola zamakina (monga chopukusira mchenga ekseli ndikugwirizanitsa makina otopetsa). Pambuyo kuzimitsa ndi kutentha ndi pamwamba nitriding, chitsulo ichi sangakhoze kupeza mkulu pamwamba kuuma, komanso kukhalabe pachimake zofewa, kotero zimakhala zabwino zimakhudza kulimba. Poyerekeza ndi zitsulo zozimitsidwa ndi carburized, zimakhala ndi mawonekedwe ang'onoang'ono a kutentha kwa kutentha ndi kuuma kwakukulu.

45 zitsulo zimagwiritsidwa ntchito kwambiri popanga makina. Chitsulo ichi chili ndi makina abwino. Komabe, ichi ndi sing'anga carbon zitsulo ndi osauka kuzimitsa ntchito. No. 45 zitsulo akhoza kuumitsa hrc42 ~ 46. Choncho, ngati pamwamba kuuma chofunika ndi apamwamba makina katundu 45 # zitsulo akuyembekezeka kubweretsedwa, pamwamba 45 # zitsulo nthawi zambiri carburized ndi kuzimitsidwa, kotero kuti kuuma kofunikira kungathe kupezeka.


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