Hauv kev lag luam fastener, feem ntau siv yog Qib 4.8 zoo tib yamhexagon taub hau bolts. Tshwj tsis yog rau lawv lub ntuj tiav, feem coob ntawm Qib 4.8 bolts no tau txais electrogalvanizing lossis kub-dip galvanizing kho. Ntawm cov bolts feem ntau siv rau electrogalvanizing, hex socket cap bolts yog hom tseem ceeb -electrogalvanizing tsis tsuas yog txhim kho cov khoom tiv thaiv corrosion, tab sis kuj hloov cov khoom qub dub hex socket cap bolts rau hauv hom tshiab - tshiab tsos, ua rau lawv zoo nkauj dua thiab siv tau. Lub hauv paus ntsiab lus ntawm electrogalvanizing yog siv electrolysis rau deposit zinc ions, tsim ib tug nyias tiv thaiv zinc txheej ntawm lub ntsia liaj qhov rooj nto, yog li hloov lub ntsia liaj qhov rooj cov xim thiab txhim khu nws corrosion kuj.
Electrogalvanizing tseem hu ua txias galvanizing. Nws tau txais lub npe no vim tias muaj lwm cov txheej txheem galvanizing (xws li kub-dip galvanizing thiab kev kho Dacromet) txhua qhov yuav tsum tau ua nyob rau hauv siab - qhov kub thiab txias ib puag ncig, thaum electrogalvanizing yog nqa tawm nyob rau hauv chav tsev kub nyob rau hauv lub electroplating da dej, tsis muaj kev cia siab rau siab kub rau adhering zinc txheej rau lub bolt nto. Lub hauv paus ntsiab lus tshwj xeeb yog raws li hauv qab no: lub ntsia liaj qhov rooj ua raws li cathode, thiab zinc phaj raws li anode, ob qho tib si rau hauv cov tshuaj electroplating uas muaj zinc ions. Thaum cov hluav taws xob tam sim no dhau los, cov tshuaj tiv thaiv electrochemical tshwm sim ntawm cathode thiab anode, thiab zinc ions tau zoo ib yam tso rau ntawm lub ntsia liaj qhov rooj los tsim cov txheej ci ci - txheej txheem no hu ua electrogalvanizing (lossis txias galvanizing). Nws yuav tsum raug sau tseg tias txheej txheej electrogalvanized yog nyias; nws tsuas tuaj yeem kho qhov khawb me me lossis kev puas tsuaj ntawm lub ntsia liaj qhov rooj thiab tsis tuaj yeem npog qhov hnyav hnyav.
Hex socket cap boltstsis tuaj yeem muab tso ncaj qha rau hauv da dej electroplating ua ntej txias galvanizing. Lawv saum npoo yuav tsum tau muab ntxuav kom huv si ua ntej: rau Qib 4.8 bolts, lawv tuaj yeem muab tso ncaj qha rau hauv da dej electroplating tom qab ntxuav; rau qib 8.8 nruab nrab thiabsiab - lub zog bolts, yuav tsum muaj txheej txheem pickling ntxiv ua ntej galvanizing. Cov bolts yog soaked nyob rau hauv ib tug pickling da dej rau ib lub sij hawm ntawm lub sij hawm kom tshem tawm cov nto oxide nplai thiab cov roj, ua raws li los ntawm Secondary tu, thiab thaum kawg muab tso rau hauv lub electroplating da dej rau txias galvanizing. Ib qho kev ceeb toom tshwj xeeb: tom qab pickling, Qib 8.8 bolts yuav tsum tau kho raws sij hawm hydrogen nyem kom tsis txhob muaj kev pheej hmoo ntawm hydrogen embrittlement uas yuav cuam tshuam rau lub zog ntawm lub zog.
Hauv kev lag luam, electroplating yog ib qho tseem ceeb ntawm kev siv tshuab ua haujlwm. Electroplating tsis yog tsuas yog xa mus rau txias galvanizing nrog dawb lossis xiav -dawb nto, tab sis kuj muaj ntau txoj hauv kev xws li nickel plating, kub plating, thiab nyiaj plating. Cov txheej txheem ua tiav thiab cov txheej txheem thev naus laus zis ntawm cov txheej txheem electroplating no zoo ib yam.
Ntawm ntau txoj kev kho saum npoo, ib qho tshwj xeeb: anodizing (lub ntsiab lus "anodic hydrogenation" tsis raug). Txawm hais tias nws kuj poob rau hauv qeb ntawm kev kho deg, anodizing tsuas yog siv tau rau txhuas fasteners. Hauv kev siv niaj hnub, aluminium fasteners kuj tsis tshua muaj, yog li cov kev xav tau no tsis muaj ntau.
Piv nrog rau lwm cov kev kho deg, electrogalvanizing muaj tus nqi qis tshaj tab sis muaj qhov zoo tshaj plaws: cov txheej txheem yog yooj yim thiab yooj yim rau kev khiav lag luam, bolt nto muaj siab tiav, nws yog tsim rau ntau lawm (nrog rau cov zis loj), zinc txheej yog zoo thiab uniform, nws muaj cov yooj yim corrosion kuj, thiab nws muaj peev xwm nthuav cov xim sib txawv raws li qhov yuav tsum tau muaj. Lub caij no, cov zinc txheej tau zoo adhesion thiab tsis yooj yim rau poob thaum lub sij hawm siv ib txwm thiab muaj kev cuam tshuam me.
