Cov txheej saum npoo av ntawm cov ntsia hlau tsuas yog qhov tseem ceeb raws li cov khoom siv ntaus nrig ntawm cov khoom ntiag tug. Ntsia hlau xov tau tsim los ntawm kev txiav los yog ua machining txheej txheem, thiab cov txheej txheem txheej tseem ceeb muab cov txheej txheem tseem ceeb ntawm cov ntsia hlau shank thiab xov.
Txog rau qhov kawg, screalars tau txais txiaj ntsig zoo los ntawm ntau qhov kev ua kom pom cov txheej txheem saum npoo av uas tau muab cov ntsia hlau zoo kom muab kev tiv thaiv kom zoo thiab tawg.
Nyob rau hauv lub nutshell, cov txheej txheej saum npoo yog siv rau cov ntsia hlau kom nce ntsia hlau los ntawm kev ua haujlwm ntawm kev xeb lossis tawg.
Yog li, dab tsi yog qhov kev kho ntsia hlau saib xyuas ntsia hlau zoo tshaj plaws? Cov hauv qab no yog cov ntsia hlau ntsia hlau zoo tshaj plaws:
1. Zinc Plating
Feem ntau cov txheej txheem kev kho deg rauNtsia hlau yog electro galvanizingCov. Nws tsis yog tsuas yog pheej yig, tab sis nws kuj muaj qhov tsos zoo nkauj. Electroplating yog muaj nyob rau hauv dub thiab tub rog ntsuab. Txawm li cas los xij, ib qho tsis zoo ntawm electro galvanizing yog tias nws kev ua haujlwm tiv thaiv corrosion yog dav dav, thiab nws muaj qhov qis tshaj plaws tiv thaiv corrosion ntawm ib qho plating (txheej) txheej. Feem ntau, cov screws tom qab electro galvanizing muaj peev xwm dhau mus ntau tshaj 200 teev, tab sis nws yog kim dua, raug nqi li ntau npaum li dav dav galvanizing.
2. Chromium plating
Lub chromium txheej ntawm ntsia hlau fasteners yog ruaj khov nyob rau hauv ib puag ncig cov xim lossis tsis yooj yim dua cov xim lossis poob hardness, thiab tiv taus hnav. Txawm hais tias chromium txheej yog feem ntau siv raws li kev kho kom zoo nkauj txheej ntawm cov fasteners, nws tsis tshua muaj siv nyob rau hauv kev lag luam uas xav tau siab heev. Vim tias zoo chrome tau plated fasteners yog kim li stainless hlau, lawv yuav tsum tsuas yog siv thaum lub zog ntawm stainless hlau tsis txaus. Txhawm rau txhim kho chromium plating corrosion tsis kam, tooj thiab npib tsib xee yuav tsum tau plated ua ntej chromium plating. Txawm hais tias cov txheej chromium tuaj yeem tiv thaiv ntau kub ntawm 1200 degrees Fahrenheit (650 degrees Celsius), nws raug kev txom nyem tib yam teeb meem uas Galvanizing.
3. Nyiaj thiab Nickel plating rau saum npoo
Nyiaj Txheej Rau Ntsia Hlau FastenersUa haujlwm ua cov roj nplua nyeem rau cov fasteners raws li kev tiv thaiv kev tiv thaiv corrosion. Vim tias cov nuj nqis, cov ntsia hlau ib txwm tsis siv, thiab qee zaus cov khoob khoob tseem plated. Txawm hais tias nws ib qho tarnishes nyob rau hauv huab cua, nyiaj tseem ua haujlwm ntawm 1600 degrees Fahrenheit. Txhawm rau ua haujlwm nyob rau hauv cov kub fasteners thiab tiv thaiv cov ntsia hlau oxidation, tib neeg ua haujlwm lawv cov siab kub ua hauj lwm thiab lubricating zoo. Fasteners feem ntau yog npib tsib xee nyob rau ntawm qhov chaw muaj kev ua haujlwm siab thiab corrosion tsis kam. Piv txwv li, lub tsheb roj teeb lub davhlau ya nyob twg.
4.Ntsiav ntsia hlau nto kev khoKem dacromet
Cov kev kho saum npoo ntawmDacromet rau ntsia hlau fastenersTsis muaj hydrogen embrittlement, thiab torque preload tsis tu ncua ua tau zoo heev. Txawm li cas los xij, nws muaj kev nyab xeeb tiag. Tsis suav nrog cov teeb meem nrog chromium thiab kev tiv thaiv ib puag ncig, nws yog qhov tsim nyog tshaj plaws rau lub zog tiv thaiv corrosion.
5. Deg phosphating
Txawm hais tias phosphorating yog tsawg dua galvanizing, nws muaj kev tiv thaiv tsis muaj kev tiv thaiv corrosion.Ntsia Hlau FastenersYuav tsum tau siv roj tom qab phosphating tom qab phosphating vim tias cov roj ua tau zoo muaj ntau yam ua nrog corrosion tsis kam ntawm lub fasteners. Siv cov roj teal antator tom qab phosphating, thiab roj ntsev thim tawm tau li cas 72-96 teev tau siv sijhawm li 72-96? Vim tias lawv lub zog thiab nruj ua kom nruj muaj zog muaj kev ua tau zoo ib yam, feem ntau ntawm cov ntsia hlau muaj kev nyab xeeb los ntawm phosphating + roj. Nws yog nquag nquag ua haujlwm vim tias nws yuav txaus siab rau cov kev xav tau nrawm nrawm uas xav tau thaum lub rooj sib txoos thiab cov khoom siv. Tshwj xeeb thaum sib txuas qee qhov tseem ceeb ntawm cov khoom tseem ceeb, qee cov screws siv phosphating, uas tuaj yeem tiv thaiv qhov teeb meem ntawm hydrogen embrittlement. Raws li qhov tshwm sim, hauv kev ua lag luam lag luam, ntsia hlau ib qib siab dua 10.9 feem ntau phospholdically feem ntau.
Lub sijhawm Post: Feb-15-2023