Maboti Okutidwa ndi Dacromet ndi Mtedza 

Nkhaniyi ikufotokoza za mabanja othamangitsa omwe akukhudzidwa, njira zowononga dzimbiri zomwe zimawononga malo olumikizirana ulusi, chifukwa chomwe Dacromet amavala ma bolts ndi mtedza mofanana, komanso momwe angatchulire ndi kusonkhanitsa seti yofananira ya bolt-nut-washer.

2. Momwe Corrosion Imawonongera Ulusi Wophatikizana

Ulusi ndiye geometry yomwe imatha kuwonongeka kwambiri pagulu lililonse la fastener:

1.Crevice dzimbiri- kusiyana kochepa kwambiri pakati pa ulusi wa bolt ndi ulusi wa nati kumatchera chinyezi ndi electrolyte, kupanga mpata wokhala ndi njala ya okosijeni komwe masamba a anodic amapanga ndi kubowola imayamba;

2.Galavani dzimbiri- zokutira kapena zitsulo zosiyana (boliti ya Dacromet yokhala ndi nati ya electro-plated, bawuti yosapanga dzimbiri mu nati) imayendetsa dzimbiri mwachinthu chocheperako;

3.Coating kuwonongeka pa msonkhano- ulusi kukwapula ndi ndulu pa kumangitsa; electroplate woonda ndi utoto wa organic amadulidwa mosavuta, kuwonetsa zitsulo zopanda kanthu mumizu ya ulusi;

4.Kupsinjika maganizo- ulusi woyamba wonyamula katundu umakhala ndi gawo losawerengeka la kudzaza, kotero kuti maenje a dzimbiri kumeneko amakhala ming'alu ya kutopa;

5.Fretting pansi kugwedezeka- Kusuntha kwapang'ono pakati pa nkhope zonyamula kumawononga filimuyo, kuyitanitsa dzimbiri loyera kenako dzimbiri lofiira.

Zimbiri zikachuluka mu ulusi, mtedza umagwidwa, disassembly torque iposa torque, ndipo bolt kapena stud nthawi zambiri zimadulidwa - kulephera kwa "mtedza wozizira" pakukonza minda.

3. Kukaniza kwa Corrosion of the Matched Set

Table 1. Machitidwe okutira amisonkhano ya bolt-nut poyerekeza (makhalidwe amakampani).

Chifukwa ❖ kuyanika kumagwiritsidwa ntchito pomaliza, kutenthedwa kutentha ndikuchiritsidwa pansi pa kutentha kwa kutentha, ma bolts ndi mtedza zimasunga mphamvu zawo zamakina - kulimba kwamphamvu, katundu wotsimikizira ndi kuuma kwa ISO 898-1 / ISO 898-2 - osasinthika.

4. Misonkhano Yabwino Kwambiri

1.Osasakaniza makina opaka- awiri a Dacromet bolts okha ndi Dacromet mtedza ndi wacha; gulu losakanikirana limayendetsa dzimbiri la galvanic la gawo lofooka (lomwe nthawi zambiri limakutidwa ndi zinki);

2.Kulemekeza tebulo la torque- Mafuta a Dacromet awiriawiri amakhala ndi chinthu chotsika, chokhazikika cha mtedza kuposa chitsulo chopanda kanthu; kugwiritsanso ntchito ma torque akale kumalimbitsa kwambiri ndipo kumatha kuvula ulusi wa mtedza;

3.Osadzolanso mafuta- topcoat yophatikizika imayika kale chigawo cha mikangano; mafuta owonjezera pa ulusi amasintha K mosayembekezereka;

4.Mind dongosolo la jam-nut- pamene nati wopyapyala ndi mtedza wodzaza zawunjikidwa (makonzedwe achikale otsekera), limbitsani mtedza wonsewo motsutsana ndi mtedza wopyapyala;

5. Penyani kukwiyapa awiriawiri zosapanga dzimbiri - Dacromet's lubricant topcoat amachepetsanso chiwopsezo cha ndulu pazipilala zosapanga dzimbiri;

6.Tsimikizani torque-tension ya nkhani yoyambapa skid yoyesera, pogwiritsa ntchito chophatikizira chenicheni cha bawuti-nati-washer kuchokera kumalo opangira.

5. Mapeto

Kulephera kwa dzimbiri kumayambira pa shank ya bawuti - kumayambira mu ulusi, mumpata pakati pa bawuti ndi mtedza. Cholumikizira cholimba chimafuna a chofanana ndi phukusi loteteza dzimbiri: Maboti, mtedza ndi ma washers okhala ndi zinc-flake system, otchulidwa palimodzi (ISO 10683 / ASTM F1136, flZn 8/10, ≥ 720 h NSS), atasonkhanitsidwa ndi torque yoyenera ndi mikangano. Zotsatira zake ndi kulumikizana kwa ulusi komwe kumalimbana ndi dzimbiri loyera, dzimbiri lofiyira, ming'alu, kuukira kwa ming'alu ndi kugwidwa - kupyola zaka zamchere, nyengo ndi kugwedezeka.