Zochizira Pamwamba pa Zomangamanga: Chitsogozo Chokwanira chaukadaulo

Pafupifupi zomangira zonse zamalonda zimapangidwa kuchokera ku chitsulo cha carbon, alloy steel, kapena chitsulo chosapanga dzimbiri. Ngakhale zida zolimbana ndi dzimbiri zikugwiritsidwa ntchito, chithandizo chapamwamba chimakhalabe chofunikira kuti ma bolts ndi mtedza zikhale zolimba m'malo ovuta. Nkhaniyi ikuyang'ana zokutira wamba ndi ntchito zake, kupatsa mainjiniya ndi opanga zidziwitso zotheka kuti agwire bwino ntchito yomanga.

1. Electroplated Zinc (Zinc Plating)

Electroplated zinc ndiye zokutira zomwe zimagwiritsidwa ntchito kwambiri pazomangira zitsulo zamalonda chifukwa cha kukwera mtengo kwake komanso kusinthasintha kosiyanasiyana (kopezeka mu drab yakuda kapena ya azitona). Komabe, imapereka kukana kwa dzimbiri pang'ono, komwe kumatenga maola 72 pamayeso osalowerera ndale. Zosindikizira zapadera zimatha kuwonjezera izi mpaka maola 200+, koma nthawi 5-8 mtengo wake.

Cholepheretsa chovuta kwambiri ndi hydrogen embrittlement, yomwe imayambitsa kufooketsa mabawuti amphamvu kwambiri (makalasi 10.9 ndi pamwambapa). Kuphika pambuyo pa kuwotcha kumatha kuchepetsa kufalikira kwa haidrojeni, koma njirayi sichitika kawirikawiri chifukwa chazovuta komanso mtengo wake. Kuphatikiza apo, zomangira zokhala ndi zinc zimawonetsa kusagwirizana kwa torque-to-preload, zomwe zimawapangitsa kukhala osayenerera kulumikizana kofunikira. Mafuta odzola pambuyo pa chithandizo amatha kusintha kusasinthika koma kuwonjezera mtengo.

2. Phosphating

Phosphating imapereka njira yotsika mtengo kusiyana ndi plating ya zinc, ngakhale ndi kukana kwa dzimbiri kotsika. Kugwira ntchito kumadalira kwambiri momwe mafuta amachitira pambuyo pochiza: mafuta okhazikika amapereka maola 10-20 osakanizidwa ndi kupopera mchere, pamene mafuta apamwamba amawonjezera izi kwa maola 72-96 pa 2-3 mtengo wake.

Mitundu iwiri imagwiritsa ntchito mafakitale:

• Zinc Phosphating: Imapereka mafuta ochulukirapo kuti azitha kulumikizana.

• Manganese Phosphating: Amachita bwino kwambiri polimbana ndi dzimbiri, kusavala, komanso kukhazikika kwa kutentha (107–204°C / 225–400°F).

Zomangira za phosphated zimayamikiridwa chifukwa chodalirika cha torque-to-preload consistency, zomwe zimawapangitsa kukhala abwino pamagulu ofunikira monga zida za injini (monga, ndodo zolumikizira, ma cylinder head bolts) ndi zolumikizira zitsulo zamapangidwe. Makamaka, phosphating imapewa kuyika kwa haidrojeni, ndikupangitsa kuti ikhale chisankho chosasinthika cha ma bolt amphamvu kwambiri (giredi 10.9+).

3. Black oxide

Black oxide, yophatikizidwa ndi zokutira zamafuta, ndi njira yabwino yopangira ndalama zomangira mafakitale. Ngakhale zowoneka bwino zikapakidwa mafuta, kukana kwake kwa dzimbiri kumakhala kocheperako - kumatenga maola 3-5 okha pamayeso opopera mchere mafuta atayika. Kusasinthasintha kwa torque kumakhala koyipa, koma kugwiritsa ntchito mafuta pamisonkhano kungachepetse izi. Kugwiritsiridwa ntchito kwake koyambirira kumakhala muzopanda zovuta, zotsika mtengo.

4. Cadmium Plating

Cadmium plating imapereka kukana kwa dzimbiri kwapadera, makamaka m'malo am'madzi. Komabe, kuchuluka kwake kwa kawopsedwe komanso kuwononga madzi akuwonongeka kumapangitsa kuti ikhale yokwera mtengo nthawi 15-20 kuposa kuyika zinki. Kugwiritsa ntchito kumangogwiritsidwa ntchito m'magawo apadera monga zida zamafuta akunyanja ndi ndege zapamadzi, pomwe magwiridwe antchito amavomereza kuwononga ndalamazo.

5. Chromium Plating

Chromium plating imapereka kukongola, kuuma, ndi kukana kutentha (mpaka 650 ° C / 1200 ° F). Komabe, kutengera kwake kumafakitale kumakhala kochepa chifukwa cha mtengo wofanana ndi chitsulo chosapanga dzimbiri komanso kuwopsa kwa hydrogen embrittlement kosalekeza. Kuyikapo mkuwa ndi faifi tambala ndizofunika kwambiri poteteza dzimbiri.

6.Silver & Nickel Plating

• Silver Plating: Imagwira ntchito ngati mafuta olimba ndipo imapirira kutentha kwambiri (mpaka 871°C / 1600°F), imateteza kuphulika kwa kutentha kwakukulu (monga zomangira za mumlengalenga). Zolepheretsa mtengo nthawi zambiri zimachepetsa kugwiritsa ntchito mtedza kapena ma bolt ang'onoang'ono.

• Nickel Plating: Zimaphatikiza kukana kwa dzimbiri ndi madulidwe amagetsi, abwino kwa zigawo monga ma terminals a batri.

7. Hot-Dip Galvanizing

Kuthira madzi otentha kumaphatikizapo kumiza zomangira mu zinki wosungunuka, kupanga wosanjikiza wokhuthala, wosachita dzimbiri (15-100 μm). Komabe, makulidwe opaka osagwirizana amasokoneza ulusi wokwanira, womwe umafunika kukonzanso ulusi wapambuyo-galvanizing kapena mtedza wokulirapo - zonsezi zimasokoneza mphamvu. Njirayi ndiyowopsanso zachilengedwe chifukwa cha zinc zinyalala komanso utsi. Makamaka, ndiyosayenera zomangira za grade 10.9+ chifukwa cha kuopsa kwa kupsinjika kwa kutentha.

8. DacrometKupaka

Dacromet®, perekani chitetezo chofanana ndi matrix a zinc-aluminium. Amachotsa ma hydrogen embrittlement ndikupatsanso kusinthasintha kwa torque, kuwapangitsa kukhala abwino pakugwiritsa ntchito mwamphamvu kwambiri, zowononga kwambiri.

9.Ena

Zovala zapadera monga Magni (MAGNI), Ruspert (RUSPERT), ndi ma hybrids a Tiodize a aluminiyamu/Teflon amakwaniritsa zofunikira, zomwe zimapatsa kukana kuvala bwino, kuthira mafuta, kapena kusakhazikika kwamankhwala.

Zochizira Pamwamba pa Zomangira Zitsulo Zosapanga dzimbiri

• Kuchepetsa mafuta: Zofunikira pakuchotsa mafuta opangira omwe amasokoneza magwiridwe antchito ndi kukongola.

• Passivation: Imakulitsa kukana dzimbiri ndi kuwala kwa pamwamba pomiza zomangira mu nitric kapena citric acid solution.

• Electroplating: Zopaka za faifi tambala kapena zinki zimathandizira kuti ziwoneke bwino, ngakhale kuti chitsulo chosapanga dzimbiri sichikhala ndi dzimbiri nthawi zambiri kumapangitsa izi kukhala zosafunikira.

Mapeto

Kusankha chithandizo choyenera chapamwamba kumafuna kugwirizanitsa kukana kwa dzimbiri, kachitidwe ka makina, malamulo a chilengedwe, ndi mtengo. Kuchokera ku zinc zopangidwa ndi electroplated kumisonkhano ya bajeti mpaka zokutira zotenthetsera zamakina ofunikira kwambiri, njira iliyonse imalimbana ndi zovuta zina. Mainjiniya amayenera kuyika patsogolo kugwirizana ndi momwe amagwirira ntchito, kaya akulimbana ndi madzi amchere, kutentha kwambiri, kapena kunyamula katundu wambiri, kuti atsimikizire kudalirika komanso kukhala ndi moyo wautali.

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