1.Yuav ua li cas ntxuav tsis txaus ntawm lub substrate nto yuav cuam tshuam lub shedding ntawm zinc txheej?
Ua rau: Ua ntej galvanizing, cov roj residual, hlau hmoov, los yog nplai yuav nyob twj ywm rau ntawm steel strip nto. Cov kab mob no tiv thaiv kev sib cuag ncaj qha ntawm cov tshuaj zinc thiab cov ntshiab steel substrate, tsim ib txheej cais. Qhov no ua rau tsis zoo txheej adhesion thiab yooj yim detachment.
Kev Tiv Thaiv:
Txhim kho cov txheej txheem pretreatment: xyuas kom meej tias txhua kauj ruam, suav nrog degreasing, pickling, yaug, thiab fluxing, yog tag nrho thiab zoo.
Tsis tu ncua xyuas thiab hloov cov tshuaj kho mob kom ntseeg tau tias nws huv thiab muaj zog.
Xyuas kom meej tias cov hlau strip nto yog huv si thiab ib tug zoo fluxing zaj duab xis yog tsim ua ntej nkag mus rau hauv lub zinc da dej.
2.Dab tsi cuam tshuam rau kev tswj tsis raug ntawm cov txheej txheem tsis muaj nyob rau ntawm zinc txheej shedding?
Ua rau:
Zinc da dej kub tsis zoo: Kev kub siab heev tuaj yeem ua rau cov hlau tuab thiab ntxeem tau ntau dhau -zinc alloy txheej, ua rau nws nkig thiab raug flake- tawm hauv cov hmoov nplej thaum khoov lossis cuam tshuam. Tsis tshua muaj kub tuaj yeem cuam tshuam qhov fluidity ntawm zinc da dej, ua rau cov txheej txheem tsis sib xws.
Txoj kab tsis zoo: Qhov no cuam tshuam rau lub sijhawm cov tshuaj tiv thaiv ntawm cov hlau substrate thiab zinc da dej.
Kev tswj cov riam phom tsis zoo: Kev tsis ruaj khov ntawm cov riam phom lub siab, qhov deb, thiab lub kaum sab xis tuaj yeem ua rau cov zinc txheej tsis sib xws, ua rau muaj kev ntxhov siab sab hauv ntawm qhov sib cuam tshuam ntawm cov txheej tuab thiab nyias thiab ua rau tawg thiab flake- tawm.
3.Dab tsi yog cov teeb meem nrog cov tshuaj muaj pes tsawg leeg ntawm cov hlau matrix?
Ua rau: Ntau theem ntawm cov ntsiab lus xws li silicon (Si) thiab phosphorus (P) hauv cov hlau (xws li cov los ntawm siab- lub zog steel) tuaj yeem ua rau "Sandelin effect," ua rau cov hlau-zinc alloy txheej loj tuaj txawv txav, ua rau grey, dull txheej nrog tsis zoo adhesion uas yooj yim flakes.
Kev Tiv Thaiv:
Rau cov paub "reactive steels," galvanizers yuav tsum tau kho lawv cov txheej txheem, xws li txo cov zinc da dej kub, nce tus nqi txias, los yog siv tshwj xeeb zinc da dej xws li zinc-nickel alloys, los tiv thaiv overreaction.
Thaum muas steel coils, qhia meej lawv cov tshuaj muaj pes tsawg leeg thiab tsim nyog rau galvanizing.
4.Yuav ua li cas tiv thaiv nws thaum ua thiab siv?
Ntau dhau deformation los yog dabtsi yog khoov
Ua rau: Thaum lub sij hawm stamping, dabtsi yog khoov, los yog yob txoj kev, yog hais tias tus khoov vojvoog yog me me heev, zinc txheej yuav tawg los yog txawm tev vim muaj kev ntxhov siab tshaj nws cov kev txwv.
Kev Tiv Thaiv:
Ua tib zoo ua raws li cov txheej txheem ua cov cuab yeej pom zoo ua cov txheej txheem rau cov ntawv hlau galvanized, tshwj xeeb tshaj yog qhov qis qis qis.
Rau qhov chaw uas yuav tsum tau deformation tseem ceeb, xaiv ib tug ntau ductile txheej (xws li, ntshiab zinc piv rau alloyed txheej).
Severe Mechanical Scratches
Ua rau: Thaum lub sij hawm nqa, kev thauj mus los, uncoiling, thiab kev ua haujlwm, kev sib txhuam muaj zog nrog cov khoom siv hlau ntse (xws li cov hlua hlau, cov khoom siv, thiab vuam slag) tuaj yeem txiav ncaj qha lossis txhuam cov zinc txheej.
Kev Tiv Thaiv:
Siv nylon slings tshwj xeeb lossis C-hooks thaum nqa; tsis txhob siv cov hlua hlau.
Khaws cov kab ntau lawm thiab cov chaw ua haujlwm huv si thiab tsis muaj cov khoom txawv teb chaws nyuaj.
Ua tib zoo saib xyuas thiab tsis txhob rub.
5.Yuav ua li cas tiv thaiv teeb meem thaum thauj thiab khaws cia?
Kev ntim khoom tsis raug thiab Strapping
Ua rau: Overtightening ntawm strapping los yog vibration thaum thauj yuav ua rau lub strapping mus khawb rau hauv cov npoo ntawm lub kauj los yog ntawv, txiav thiab abrading txheej zinc. Swb ntawm cov khaubncaws sab nraud povtseg tuaj yeem ua rau muaj kev sib txhuam corrosion thiab khawb.
Kev Tiv Thaiv:
Siv lub kaum sab xis uas tsim nyog los yog cov ntaub ntawv cushioning los tiv thaiv cov npoo thiab qhov chaw ntawm lub kauj.
Xyuas kom cov hlua khi kom nruj thiab ruaj ntseg kom tsis txhob xoob thaum thauj.
Khaws cov hlua khi ncaj nraim thaum khaws cia kom tsis txhob ntog ntawm cov khaubncaws sab nraud povtseg.