1.Dab tsi yog cov qauv kev sim thiab cov txheej txheem tseem ceeb?
International Standards:
TS EN ISO 11143: 2020 "Kev txiav txim siab ntawm cov roj seem ntawm qhov chaw txias -rolled steel ntawv- txoj kev gravimetric" lossis ISO 16055: 2020. Qhov no tam sim no yog txoj kev lees paub tshaj plaws thiab kev tso cai thoob ntiaj teb.
ASTM D3815 "Standard Test Method for Determination of Unwashed Gum in Aviation Fuel by Solvent Extraction and Infrared Spectroscopy" (qee zaum siv rau roj extraction).
Suav National Standards:
Daim ntawv ntxiv rau GB/T 2518-2019 "Nruam Kub-Dip Galvanized thiab Zinc Alloy Coated Steel Sheets thiab Strips" feem ntau qhia txog cov kev xav tau rau cov roj seem lossis cov ntsiab lus hlau nyob rau saum npoo ntawm galvanized substrates (piv txwv li, txias dov coils), thiab siv txoj kev ntsuas gravimetric.
GB/T 4333.10-2019 "Ferrosilicon-Kev txiav txim siab ntawm Carbon Content-Gravimetric Method" thiab lwm cov qauv qhia tib lub ntsiab lus gravimetric.
Japanese Industrial Standards:
Cov qauv xws li JIS G3313 "Cold-Rolled Electro-Galvanized Steel Sheets thiab Strips" qhia cov ntsiab lus roj seem.
2.Dab tsi yog cov qauv kev xeem rau kev ua tau zoo/semi-kev soj ntsuam kom muaj nuj nqis?
Kev ntsuas dej tawg:
Lub hauv paus ntsiab lus: Cov chaw huv si yog hydrophilic, thiab cov tee dej yuav sib npaug ntawm lawv; roj- tej qhov chaw muaj kab mob yog hydrophobic, thiab cov tee dej yuav ntsws mus rau hauv cov hlaws dai. Qhov no yog qhov feem ntau classic thiab ceev txoj kev sim.
Surface tension test cwj mem/solution:
Lub hauv paus ntsiab lus: Ib qho kev daws teeb meem nrog tus nqi ntawm qhov nro (xws li dyne tov) yog siv rau saum npoo ntawm lub phaj steel. Seb qhov nro saum npoo raws li tus qauv yog txiav txim los ntawm seb cov kua cog lus hauv 2-3 vib nas this. Piv txwv li, yog tias qhov nro saum npoo loj dua lossis sib npaug ntawm 38 dynes / cm yog xav tau, yuav tsum siv cov tshuaj ntsuam xyuas nrog qhov nro ntawm 38 dynes / cm.
Fluorescence/Ultraviolet (UV) Detection:
Lub hauv paus ntsiab lus: Qee cov roj dov muaj cov tshuaj fluorescent uas fluoresce nyob rau hauv lub teeb ultraviolet. Los ntawm kev sib piv cov fluorescence siv los yog cheeb tsam, kev faib cov roj paug tuaj yeem yog ib nrab- ntsuas qhov ntau.
FTIR (Fullly Spectroradiography):
Lub hauv paus ntsiab lus: Los ntawm kev txheeb xyuas cov extracts siv infrared spectroscopy lossis ncaj qha ua ATR (Attenuated Total Reflectance) nrhiav pom ntawm qhov chaw, tsis tsuas yog cov hom roj tuaj yeem txheeb xyuas ntau, tab sis kuj txheeb xyuas qhov zoo.
3.Dab tsi yog cov kev txwv ntau rau kev tswj cov pa phem?
Lub hom phiaj dav dav (CQ, Kev Lag Luam Zoo):
Cov kev xav tau kuj yog lenient. Cov roj seem seem yuav yog 200-500 mg / m² lossis siab dua, feem ntau rau kev tiv thaiv xeb.
Stamping / Deep Drawing (DQ, DDQ, EDDQ):
Cov kev xav tau nruj. Cov roj seem feem ntau tswj tau ntawm thaj tsam 100-300 mg / m². Cov roj zaj duab xis yuav tsum tsis tu ncua, xyuas kom lubrication rau stamping tsis cuam tshuam rau vuam thiab tu.
Cov Vaj Huam Sib Luag, High-Housings:
Kev xav tau siab. Cov roj seem feem ntau yog <150 mg / m² kom ntseeg tau tias muaj kev sib txuas ntawm cov txheej tom ntej.
Automotive Sab nrauv Panels (O5 Surface):
Cov kev xav tau yog qhov nruj tshaj plaws. Cov roj seem feem ntau yuav tsum yog <50 mg/m², lossis txawm <30 mg/m² (piv txwv li, siab-kawg hom xws li BMW thiab Mercedes-Benz). Kev saib xyuas meej siv txoj kev gravimetric yog qhov yuav tsum tau ua, thiab cov roj muaj pes tsawg leeg kuj tseem ceeb (tsawg silica, yooj yim los ntxuav).
4.Yuav xaiv thiab siv cov qauv li cas?
Daim ntawv cog lus ua ntej: Peb ua qhov tseem ceeb ntawm kev ua raws li cov qauv kev sim thiab txwv cov qauv qhia meej meej hauv daim ntawv cog lus kev kos npe nrog tus neeg siv khoom.
Tsis Muaj Cov Cai Lij Choj:
Rau cov xwm txheej uas xav tau kev tswj xyuas meej thiab kev txiav txim siab zoo, peb siv ISO 11143 lossis ib txoj kev sib npaug gravimetric.
Rau kev ceev ceev ntawm - xyuas qhov chaw, peb siv hydrophilic zaj duab xis rupture testing los yog kev ntsuam xyuas qhov nro.
Tsim Cov Txheej Txheem Tswjhwm Sab Hauv: Cov tuam txhab tsim cov hlau tsim tsim cov txheej txheem kev tswj hwm sab hauv uas nruj dua li cov neeg siv khoom kom ntseeg tau 100% cov khoom tsim nyog thaum tawm hauv lub hoobkas.
5.Dab tsi yog qhov zoo thiab qhov tsis zoo ntawm cov kuab tshuaj rho tawm -gravimetric method?
Muaj tseeb, lub hom phiaj, thiab arbitrable
Sijhawm -siv, xav tau cov cuab yeej kuaj, thiab raug nqi ntau