1. Tus qauv tus nqi rau zinc txheej ceev ntawm galvanized coils yog dab tsi?
The standard density of the pure zinc coating (code Z) on galvanized coils is typically 7.14 g/cm³, a value widely used in engineering calculations and standard specifications. Raws li qhov ceev ntawm zinc, 1-micron tuab zinc txheej sib raug rau qhov hnyav ntawm kwv yees li 7.14 g / m². Yog li, kev sib raug zoo ntawm zinc txheej thickness thiab qhov hnyav ntawm ib chav tsev yog: Thickness (μm) × 7.14=Qhov hnyav ntawm zinc txheej ntawm ib sab (g / m²).
2. Puas yog cov zinc txheej ntom ntom tau teev nyob rau hauv cov qauv txawv teb chaws thiab thoob ntiaj teb zoo sib xws?
A: Cov qauv sib txawv siv qhov sib txawv me ntsis rau zinc txheej ntom ntom, tab sis lawv feem ntau poob ntawm 7.1 thiab 7.2 g / cm³. GB/T 2518 "Nruam Kub-Dip Galvanized thiab Zinc Alloy Coated Steel Sheets thiab Strips" siv 7.1 g / cm³ raws li kev xam qhov ceev rau cov xim zinc txheej; ISO 1460, txoj kev gravimetric, siv 7.2 g / cm³ raws li txoj kev hloov dua siab tshiab tom qab txheej txheej txheej rau thickness xam; thaum nyob rau hauv engineering xyaum, ib tug loj npaum li cas ntawm cov ntaub ntawv uniformly siv 7.14 g / cm³ raws li lub hauv paus hloov dua siab tshiab. Txij li qhov theoretical ntom ntom ntawm zinc nws tus kheej yog 7.14 g / cm³, tus nqi no muaj lub hauv paus muaj zog ntawm lub cev thiab yog li siv ntau tshaj plaws.
3. Puas yog cov qauv ntom ntom rau txhuas-zinc thiab lwm yam txheej txheej hlau zoo ib yam li cov zinc ntshiab?
A: Tsis yog. Qhov ntom ntawm cov zinc txheej ntshiab yog kwv yees li 7.1 ~ 7.14 g / cm³, thaum qhov ntom ntawm zinc- aluminium alloy txheej (code ZA) raug txo mus rau kwv yees li 6.6 g / cm³ vim qhov sib ntxiv ntawm txhuas. Qhov ntom ntawm aluminium-zinc alloy txheej (code AZ, feem ntau pom ntawm txhuas-zinc coated steel los xij, muaj pes tsawg leeg 55% aluminium - 43.4% zinc - 1.6% silicon) yog qis dua, kwv yees li 3.75 ~ 3.8 g / cm³. Yog li ntawd, nyob rau hauv qhov tseeb engineering xam, tus nqi sib xws yuav tsum raug xaiv raws li hom txheej; lawv tsis tuaj yeem siv sib hloov.
4. Yuav ua li cas hloov ntawm zinc txheej ceev, txheej thickness, thiab hnyav ib square meter?
A: Cov mis hloov pauv yog: Zinc txheej hnyav (g / m²)=Ib leeg- sab zinc txheej thickness (μm) × Zinc ntom (g / cm³). Taking pure zinc density as an example (7.14 g/cm³), if the single-sided zinc layer thickness is 20 μm, then the single-sided zinc layer weight=20 × 7.14 ≈ 143 g/m². Hauv kev lag luam tiag tiag, tag nrho qhov hnyav ntawm ob tog feem ntau yog siv. Piv txwv li, cov txheej txheem Z275 muaj tag nrho cov ntsiab lus zinc ntawm 275 g / m², thiab nws ib leeg -sided thickness yog kwv yees li 275 ÷ 2 ÷ 7.14 ≈ 19.3 μm. Qhov kev sib raug zoo ntawm kev hloov pauv no tso cai rau kev hloov pauv sai ntawm cov tuab thiab qhov hnyav los xyuas seb cov khoom specifications tau raws li qhov yuav tsum tau ua.
5. Dab tsi yog qhov cuam tshuam ntawm alloying ntsiab ntawm qhov ntom ntawm zinc txheej?
A: Qhov sib ntxiv ntawm cov ntsiab lus alloying cuam tshuam qhov ntom ntawm zinc txheej. Cov zinc ntshiab muaj qhov ntom ntawm kwv yees li 7.1-7.14 g / cm³. Thaum kwv yees li 5% txhuas ntxiv los ua zinc- aluminium alloy txheej (ZA), qhov ceev yuav txo mus rau kwv yees li 6.6 g / cm³. Thaum cov ntsiab lus txhuas tau nce mus rau kwv yees li 55% los ua ib qho txhuas-zinc txheej (AZ, piv txwv li, aluminium-zinc plating), qhov ceev ntxiv txo mus rau kwv yees li 3.75-3.8 g / cm³. Qhov qis dua no txhais tau hais tias, rau tib txheej txheej tuab, cov txheej txheej hlau yog sib zog rau ib cheeb tsam thiab siv cov khoom siv hlau tsawg dua. Tsis tas li ntawd, cov txheej txheem sib txawv ntawm cov hlau sib txawv qhia qhov sib txawv corrosion kuj thiab ua cov yam ntxwv rau txheej. Cov neeg siv yuav tsum xaiv cov txheej txheej tsim nyog raws li lawv cov kev thov tshwj xeeb.