1.Yuav nyuaj npaum li cas zinc txheej nws tus kheej?
Lub microhardness ntawm cov zinc ntshiab yog kwv yees li 70-120 HV. Los ntawm kev sib piv, tib neeg ntiv tes muaj qhov tawv ntawm li 20-30 HV, thaum rab riam zoo tuaj yeem tshaj 600 HV.
Qhov no txhais tau hais tias cov txheej zinc ntshiab tuaj yeem khawb tau yooj yim los ntawm cov khoom tawv xws li cov lus qhia riam lossis grit. Qhov no yog vim li cas yuav tsum tau saib xyuas tshwj xeeb los tiv thaiv qhov chaw ntawm galvanized coils thaum thauj thiab ua haujlwm.
2.Yuav ua li cas lub hardness ntawm lub substrate cuam tshuam rau saum npoo hardness ntawm galvanized kauj?
Galvanized coils yog galvanized ntawm qhov txias - dov los yog siab - lub zog substrate. Qhov "hardness" peb pom thaum kov lossis khawb nrog cov cuab yeej zoo tib yam yog qhov sib xyaw ua ke ntawm cov substrate thiab zinc txheej, nrog rau qhov hardness ntawm substrate yog qhov tseem ceeb.
Lub substrate hardness yog ntau dua li zinc txheej. Piv txwv li, qhov nyuaj ntawm qhov txias txias -khoov hlau feem ntau yog siab dua 120-180 HV, thiab cov hlau muaj zog ntau dua.
Cov ntsiab lus: Cov dents thiab deformation kuj ntawm galvanized coils nyob ntawm feem ntau ntawm cov khoom siv ntawm cov hlau substrate.
3.Yuav ua li cas hom galvanizing txheej txheem cuam tshuam rau hardness ntawm galvanized kauj?
Kub-dip galvanizing: Cov txheej txheem txheej txheej yuav muaj cov zinc txheej ntshiab thiab cov zinc hauv qab- hlau alloy txheej. Cov zinc- txheej hlau alloy (xws li gamma txheej) yog ib qho nyuaj thiab hnav ntau dua- tiv taus dua li cov zinc txheej ntshiab, tab sis kuj nkig ntau dua. Hauv kub -dip galvanizing, yog tias cov txheej txheem tswj tau zoo thiab cov txheej txheem alloy tau tsim tau zoo, qhov hnav tsis kam yuav zoo dua.
Electrogalvanizing: Lub txheej yog yuav luag ntshiab zinc, uas ua rau ib tug kuj softer nto thiab ntau raug rau khawb.
4.Yuav ua li cas alloying ntsiab nyob rau hauv zinc txheej cuam tshuam lub hardness ntawm galvanized kauj?
Hauv qee cov khoom tshwj xeeb galvanized, xws li Galvanneal (zinc{0}} hlau alloy txheej), kev kho cua sov hloov tag nrho txheej txheej rau hauv zinc- hlau alloy. Cov txheej no, tsis muaj cov zinc txheej ntshiab, yog qhov nyuaj dua li cov pa kub -dip galvanizing, ua rau nws hnav tsis zoo- tiv taus thiab muab lub hauv paus zoo rau cov txheej txheem tom ntej. Nws microhardness tuaj yeem ncav cuag 250 HV lossis siab dua.
5.Yuav ntsuas thiab ntsuas "hardness" li cas?
Macrohardness (Substrate Hardness)
Test Method: Pencil hardness lossis abrasion resistance test feem ntau yog siv los ntsuas qhov khawb thiab hnav tsis kam ntawm txheej nws tus kheej.
Daim ntawv thov: Qhov no yog qhov muaj txiaj ntsig zoo rau kev ntsuas qhov tsis kam ntawm galvanized coils rau qhov chaw puas thaum lub sijhawm thauj mus los thiab ua haujlwm. Cov cwj mem hardness ntawm cov pa kub -dip galvanized steel feem ntau yog nruab nrab ntawm B thiab 1H, thaum alloyed galvanized steel tuaj yeem ncav cuag 1H txog 3H lossis siab dua.
Microhardness (txheej hardness)
Test Method: Lub microhardness tester yog siv los ntsuas tus ntoo khaub lig- ntu ntawm txheej txheej, muab tus nqi tshwj xeeb hardness (xws li HV lossis HK).
Daim Ntawv Thov: Feem ntau yog siv rau cov txheej txheem kev tshawb fawb thiab kev soj ntsuam zoo, tsis yog kev tshuaj xyuas niaj hnub.