1.Vim li cas nws tuaj yeem curled?
Lub substrate ntawm galvanized coils feem ntau yog siab -zoo qis- carbon steel (xws li SPCC, ST12, DX51D, thiab lwm yam), uas muaj cov yas zoo heev thiab ductility, ua rau nws tsim nyog rau kev tsim cov txheej txheem xws li khoov, stamping, thiab hemming. Raws li kev ua haujlwm tsim nyog, txheej zinc txheej tuaj yeem deform nrog rau substrate yam tsis muaj qhov loj - nplai tev.
2.Dab tsi yog cov teeb meem thaum hemming?
Zinc peeling los yog hmoov: Thaum lub sij hawm curling txheej txheem, zinc txheej yog raug rau hnyav ncab thiab compression. Kev ua haujlwm tsis raug (xws li lub vojvoog me me lossis qhov tsis tsim nyog tuag tshem tawm) tuaj yeem ua rau microcracks hauv zinc txheej lossis txawm ua rau nws tev tawm ntawm lub substrate, cuam tshuam rau kev zoo nkauj thiab corrosion kuj.
• Nto khawb: Ib qho pwm ntxhib los yog impurities tuaj yeem yooj yim khawb cov zinc txheej.
• Zinc slag adhesion: Zinc hmoov tuaj yeem ua raws li cov pwm lossis qhov chaw ua haujlwm, cuam tshuam rau cov khoom zoo.
3.Dab tsi yog yam tseem ceeb los xyuas kom meej hemming?
Xaiv Txoj Cai Galvanized Coil Hom:
Txheej hom:
Cov zinc txheej ntshiab, xws li GI, kuj yog mos thiab zas, ua rau lawv haum rau kev sib sib zog nqus zoo li hemming.
Zinc- hlau alloy coatings, xws li GA, muaj zog dua hardness thiab zoo hnav tsis kam, tab sis yog me ntsis ductile dua GI thiab muaj ib tug me ntsis ntawm kev pheej hmoo ntawm tawg thaum lub sij hawm heev khoov.
Txheej Thickness / Qib: Cov txheej txheej tuab (xws li Z180, Z275) muaj kev cuam tshuam ntau dua rau flaking thaum ua. Rau cov txheej txheem hemming uas yuav tsum tau deformation tseem ceeb, cov txheej nyias nyias (xws li Z60, Z90) feem ntau pom zoo.
Kev kho deg:
Chromium-Passivation pub dawb: Cov txheej txheej ib puag ncig tus phooj ywg passivation no feem ntau siv thiab muaj kev cuam tshuam tsawg kawg rau kev ua haujlwm.
Roj Txheej: Nto oiling muab lubrication, txo kev sib txhuam ntawm cov pwm thiab cov khoom ua haujlwm, thiab tiv thaiv khawb thiab txo cov zinc flaking.
Tuag Tsim thiab Kho:
Tuag Clearance: Cov tuag tshem tawm yuav tsum tau kho raws li cov khoom thickness thiab txheej thickness. Qhov kev tshem tawm yuav tsum yog me ntsis loj dua cov khoom tuab kom tso cai rau qhov chaw rau zinc txheej thiab tiv thaiv kom tsis txhob muaj ntau dhau.
Corner Radius: Lub kaum sab xis ntawm lub hemming tuag yuav tsum tsis txhob me dhau. Lub kaum sab xis loj dua tso cai rau cov khoom siv smoother thiab txo qhov kev pheej hmoo ntawm zinc tawg.
Tuag Hardness thiab Finish: Cov tuag yuav tsum muaj siab hardness thiab ib tug heev du nto tag (zoo tagnrho polished) kom txo tau kev sib txhuam thiab zinc sticking.
Txheej txheem tswj:
Ceev: Tsim nyog txo qhov kev ua haujlwm ceev tso cai rau cov khoom kom deform sai dua, txo cov kev cuam tshuam quab yuam thiab tiv thaiv cov txheej.
Lubrication: Txawm hais tias cov khoom siv yog oily, ntxiv cov roj nplaum uas tsim nyog tuaj yeem ua tau zoo heev thaum kev ua haujlwm nyuaj.
4.Dab tsi yog qhov kev tiv thaiv -corrosion kev ua tau zoo tom qab curling?
Txawm tias nyob rau hauv kev ua haujlwm zoo tshaj plaws, zinc txheej hauv thaj tsam hem tuaj yeem tsim microcracks, uas yog qhov qub. Txawm li cas los xij, zinc lub sacrificial anodic tiv thaiv tseem nyob. Thaum cov khoom siv hauv paus raug nthuav tawm hauv cov microcracks, cov zinc nyob ib puag ncig nyiam corrodes, tiv thaiv cov hlau los ntawm xeb. Yog li ntawd, thaum tag nrho cov kev tiv thaiv corrosion yog me ntsis txo piv rau cov cheeb tsam tiaj tus, nws tseem nyob deb tshaj rau ungalvanized steel.
5.Dab tsi yog kev ceev faj rau curling galvanized coils?
Cov ntaub ntawv nyiam: Xaiv cov zinc txheej ntshiab nrog cov ductility zoo thiab tsim nyog txheej tuab.
Ua tib zoo tsim pwm: Ua kom pom tseeb qhov tsim nyog, lub kaum sab xis kom txaus, thiab ua tiav siab - zoo.
Cov Txheej Txheem Tswjhwm: Txhim kho cov txheej txheem ua haujlwm zoo thiab siv lubrication thaum tsim nyog.