Tus qauv EN877 qhia meej txog cov kev cai ua haujlwm ntawmcov kav hlau cam khwb cia, cov khoom sivthiablawv cov connectorssiv rau hauv cov tshuab nqus dej hauv cov tsev.EN877:2021yog qhov tseeb tshaj plaws ntawm tus qauv, hloov qhov EN877: 2006 version yav dhau los. Qhov sib txawv tseem ceeb ntawm ob qho version hauv kev sim yog raws li nram no:
1. Qhov kev sim:
EN877: 2006: Feem ntau sim cov khoom siv kho tshuab thiab cov khoom sib khi ntawm cov kav dej thiab cov khoom sib txuas.
EN877: 2021: Raws li qhov kev xeem thawj zaug, ntxiv cov kev cai xeem rau kev ua haujlwm rwb thaiv tsev suab, kev tiv thaiv xeb tshuaj lom neeg, kev tiv thaiv hluav taws thiab lwm yam ntawm cov kav dej.
2. Cov txheej txheem sim:
EN877: 2021 hloov kho qee txoj kev sim kom ua rau lawv muaj kev tshawb fawb ntau dua thiab tsim nyog, xws li:Kev sim tshuaj tiv thaiv xeb: Cov kev daws teeb meem tshiab thiab cov txheej txheem sim tau siv, xws li siv pH2 sulfuric acid kua hloov cov kua hydrochloric acid qub, thiab ntxiv cov kev sim tiv thaiv xeb rau ntau cov tshuaj.
Kev ntsuam xyuas kev ua tau zoo ntawm lub suab: Ntxiv cov kev cai xeem rau kev ua tau zoo ntawm kev rwb thaiv suab ntawm lub kaw lus kav dej, xws li siv txoj kev ntsuas qib suab los ntsuas kev rwb thaiv suab ntawm lub kaw lus kav dej.
Kev ntsuam xyuas kev ua haujlwm hluav taws: Ntxiv cov kev cai xeem rau kev ua haujlwm tiv thaiv hluav taws ntawm lub kaw lus kav dej, xws li siv txoj kev txwv kev tiv thaiv hluav taws los sim qhov kev ncaj ncees ntawm lub kaw lus kav dej hauv qab cov xwm txheej hluav taws.EN877: 2021 siv xim nrog qib tiv taus hluav taws A1
3. Cov kev cai xeem:
EN877: 2021 tau nce cov kev cai xeem rau qee cov cim qhia kev ua tau zoo, xws li:Lub zog tensile: nce ntxiv ntawm 150 MPa mus rau 200 MPa.
Kev ntev: nce ntxiv ntawm 1% mus rau 2%.
Kev tiv thaiv xeb los ntawm tshuaj lom neeg: Ntxiv cov kev cai tiv thaiv xeb rau ntau yam tshuaj lom neeg, xws li cov kev cai tiv thaiv xeb rau cov tshuaj alkaline xws li sodium hydroxide thiab potassium hydroxide.
4. Daim ntawv qhia txog kev xeem:
EN877: 2021 muaj cov kev cai nruj dua rau cov ntsiab lus thiab hom ntawv ntawm daim ntawv qhia kev xeem, xws li:Yuav tsum tau daim ntawv qhia txog kev xeem kom muaj cov ntaub ntawv qhia txog kev xeem xws li cov txheej txheem xeem, cov xwm txheej xeem, cov txiaj ntsig ntawm kev xeem, thiab cov lus xaus.
Daim ntawv qhia txog kev xeem yuav tsum tau muab los ntawm lub koom haum xeem uas tsim nyog. Piv txwv li,DINSEN tau ntawv pov thawj los ntawm CASTCO.
Tus qauv EN877: 2021 muaj kev ntsuam xyuas ntau dua thiab nruj dua li tus qauv EN877: 2006, uas qhia txog kev tsim kho tshiab thiab kev xav tau ntawm kev ua lag luam hauv kev lag luam yeeb nkab hlau. Kev siv tus qauv tshiab no yuav pab txhim kho qhov zoo ntawm cov khoom yeeb nkab hlau thiab txhawb kev nyab xeeb thiab kev ntseeg siab ntawm cov kab ke dej hauv tsev.
EN877: 2021 piv rau EN877: 2006
Lub sijhawm tshaj tawm: Lub Peb Hlis-17-2025
