1.Why yog substrate lub zog lub txiav txim siab ua rau lub hardness ntawm galvanized chev?
Qhov siab dua ntawm substrate lub zog (tawm los lub zog / tensile lub zog), qhov nyuaj ntawm Galvanized chev feem ntau yog.
Lub zog (tsis kam rau cov yas deformation) thiab hardness (tsis kam rau hauv nroog indentation) ntawm cov qauv crystal crystal (xws li cov qoob loo khov kho crystal (xws li cov nplej hauv qab loj thiab rho tawm ntom).
Thaum lub sijhawm ua kom muaj zog yog siab (piv txwv li, los ntawm cov nplej txias thiab siv zog ua kom zoo dua, thiab muaj zog ntxiv) thiab muaj zog hauv zos (siab dua qub).
Piv txwv li, ntawm cov tsis muaj roj carbon steel substrates, sib sib zog nqus-kev kos duab qib (xws li DC06) muaj ib qho txiaj ntsig zoo ntawm kev kwv yees li ntawm 130-180 MPa sib dhos (HV) ntawm kwv yees li 50-70. High-zog hlau substrates (xws li HSLA 350) muaj cov txiaj ntsig zoo tshaj lossis sib npaug, thiab Galvanized Chev Hardness tuaj yeem ncav cuag HV 90-120, tus nqi siab dua.
2.Yog no lub galvanizing txheej txheem tswj cov kev sib raug zoo ntawm "substrate lub zog - galvanized chev hardness"?
Kub-Dip Galvanizing:
Thaum lub sij hawm kub-dip galvanizing cov txheej txheem, lub substrate yog rhuab nyob rau hauv ib qho kev siv hluav taws xob (800-900 degree-rolling), uas txo cov nplej ua kom muaj zog thiab hardness.
Yog hais tias lub substrate yog txias-dov hlau (lub zog siab thiab hardness), lub zog-dip galvanizing (piv txwv, uas poob mus rau 200 MPa tom qab annealing). Yog li, lub hardness ntawm Galvanized Chev yuav tseem poob qis (HV ntawm 80 rau 60).
Yog li ntawd, lub hardness ntawm kub-dip galvanized coil nyob ntawm tsis yog tsuas yog nyob rau ntawm thawj lub zog substrate tab sis kuj ntawm anealing txheej txheem (kub thiab sijhawm). Qhov ntau tshaj qhov annealing, qis dua lub substrate lub zog thiab qis dua lub hardness ntawm galvanized chev.
Electrogalvanizing (xws li piv txwv li):
Electrogalvanizing tsuas yog tso cov txheej zinc ntawm cov sab nrauv, tshem tawm cov kev xav tau kom muaj kev kub ntxhov thiab tawm hauv lub zog qub thiab tawv tawv loj tsis hloov. Nyob rau lub sijhawm no, lub hardness ntawm Galvanized chev yog ncaj qha correlated yog electrogalvanized, lub hardness yog sib xws nrog cov substrate).
3.Yog dab tsi zinc txheej muaj nyob rau ntawm lub hardness tag nrho?
Lub hardness ntawm zinc txheej nws tus kheej (ntshiab Zinc lossis Zinc Hv (ntshiab Txij li thaum Zin Txheej Txheej Thickness yog li tsuas yog 5-20μm (substrate thickness 0.3-3mm), nws txoj kev koom tes rau tag nrho cov coil yog negligible.
Tsuas yog thaum lub substrate yog qhov tsis tshua muaj nyias (piv txwv li tsawg dua 0.1mm) thiab ntau dua lossis sib npaug ntawm cov soft zinc txheej), tab sis qhov xwm txheej no tsis tshua muaj tshwm sim hauv kev lag luam.
4.Qhov yog tus tseem ceeb kev sib raug zoo ntawm galvanized chev tawv thiab substrate lub zog?
Substrate lub zog yog qhov tseem ceeb tshaj plaws txiav txim siab lub hardness ntawm galvanized coils, thiab ob yog feem ntau correlated. Txawm li cas los xij, tus txheej txheem anealing thaum lub sijhawm kub-dip galvanizing muaj peev xwm txo cov kev sib txuam zoo, thaum electrogalvanizing khaws cov sib txheeb tus qub. Hauv kev siv cov tswv yim, kev sib txheeb ntawm qib theem (piv txwv li, DC01, S355) thiab cov galvanizing cov kev ntsuas.
5.Qhov dab tsi yog lub hardness ntsuas txoj kev rau galvanized ntawv?
Vickers Hardness Kuaj, Brinell Hardness Kuaj, Micro Vickers Hardness Kuaj, Knoop Hardness Test