Kodi kusankha pamwamba mankhwala ndondomeko ya fasteners?

Pafupifupi zomangira zonse zimapangidwa ndi chitsulo cha carbon ndi alloy steel, ndipo zomangira zonse zimayembekezeredwa kuti zisawonongeke.Komanso ❖ kuyanika pamwamba mankhwala ayenera kutsatira mwamphamvu.

Ponena za chithandizo chapamwamba, anthu nthawi zambiri amasamala za kukongola ndi chitetezo cha dzimbiri, koma ntchito yayikulu ya zomangira ndikulumikizana kokhazikika, ndipo chithandizo chapamwamba chimakhalanso ndi chikoka chachikulu pakumangitsa kwa zomangira.Chifukwa chake, posankha chithandizo chapamwamba, tiyeneranso kuganizira za momwe kulimbikitsira kumagwirira ntchito, ndiko kuti, kusasinthika kwa torque ndi kuyikanso.

1. Electroplating

Electroplating of fasteners amatanthauza kuti gawo la fasteners kuti electroplated kumizidwa mu njira yeniyeni amadzimadzi, amene waikamo zitsulo mankhwala, kotero kuti pambuyo kudutsa njira amadzimadzi ndi panopa, zinthu zitsulo mu njira yothetsera madzi ndi kumamatira. gawo lomizidwa la zomangira.Electroplating of fasteners zambiri zimaphatikizapo galvanizing, mkuwa, faifi tambala, chromium, copper-nickel alloy, etc.

2. Phosphating

Phosphating ndi yotsika mtengo kuposa galvanizing, ndipo kukana kwake kwa dzimbiri ndi koipa kuposa kupangira malata.Pali njira ziwiri zogwiritsira ntchito phosphating zomangira, zinc phosphating ndi manganese phosphating.Zinc phosphating ili ndi mafuta odzola bwino kuposa manganese phosphating, ndipo manganese phosphating imakhala yabwino kukana dzimbiri komanso kukana kuvala kuposa plating ya zinki.Zogulitsa za Phosphating monga kulumikiza ndodo ndi mtedza wa injini, mitu ya silinda, mayendedwe akuluakulu, mabawuti a flywheel, mabawuti amagudumu ndi mtedza, etc.

3. Oxidation (kuda)

Blackening + mafuta ndi zokutira zodziwika bwino zamafakitale, chifukwa ndizotsika mtengo kwambiri ndipo zimawoneka bwino mafuta asanathe.Popeza kuti mdima wakuda ulibe mphamvu yoletsa dzimbiri, umachita dzimbiri ukakhala wopanda mafuta.Ngakhale pakakhala mafuta, kuyezetsa kutsitsi kwa mchere kosalowerera ndale kumangofikira maola 3-5.

4. Zinc yotentha yoviika

Hot galvanizing ndi ❖ kuyanika kwa matenthedwe komwe zinki imatenthedwa kukhala madzi.Makulidwe ake okutira ndi 15 ~ 100μm, ndipo sikophweka kuwongolera, koma ali ndi kukana kwa dzimbiri, choncho amagwiritsidwa ntchito nthawi zambiri muumisiri.Chifukwa cha kutentha kwa kutentha kwa zinc processing, (340-500C) singagwiritsidwe ntchito ngati zomangira pamwamba pa giredi 10.9.Mtengo wa kutentha-kuviika galvanizing wa fasteners ndi apamwamba kuposa electroplating.

5. Zinc impregnation

Zinc impregnation ndi chotchinga cholimba cha zitsulo zokhala ndi matenthedwe a zinc ufa.Kufanana kwake ndikwabwino, ndipo ngakhale zigawo zitha kupezeka mu ulusi ndi mabowo akhungu.Makulidwe a zokutira ndi 10 ~ 110μm, ndipo cholakwikacho chikhoza kuwongoleredwa mkati mwa 10%.Mphamvu zake zomangirira ndi ntchito zotsutsana ndi dzimbiri ndi gawo lapansi ndizabwino kwambiri pakati pa zokutira za zinki (electro-galvanizing, hot-dip galvanizing ndi dacromet).Kachitidwe kake kamene kamakhala kosaipitsa komanso koteteza zachilengedwe.Ngati sitiganizira za chromium ndi kuteteza chilengedwe, ndiye kuti ndiyoyenera kwambiri zomangira zamphamvu kwambiri zokhala ndi zotsutsana ndi dzimbiri.

Cholinga chachikulu cha mankhwala apamwamba a fasteners ndi kupanga fasteners kukhala odana ndi dzimbiri mphamvu, kuti kuonjezera kudalirika ndi kusinthasintha fasteners.


Nthawi yotumiza: Dec-08-2022