Kev paub qhov txawv ntawm cov khoom siv hluav taws xob tuaj yeem ua tiav los ntawm kev pom cov yam ntxwv, cov cim, kev ntsuas kev ua haujlwm ntawm lub cev, thiab kev tshuaj xyuas cov txheej txheem. Kev sib koom ua ke nrog cov xwm txheej siv tau npaj tuaj yeem ua rau muaj kev txheeb xyuas tseeb dua.
Saib qhov tshwm sim thiab xim
Cov ntaub ntawv sib txawv muaj cov yam ntxwv zoo ib yam:
Copper: Nws muaj xim purplish -liab xim hlau luster, yog mos thiab resilient, thiab feem ntau yog siv rau cov xov hlau thiab terminals.
Aluminium: Silvery-dawb, kuj lub teeb, tsis tshua muaj zog tshaj tooj liab, yooj yim oxidizes los ua ib tug greyish - zaj duab xis dawb, thiab feem ntau yog siv rau busbars thiab radiators.
Plastic Housings:
ABS: Smooth nto, feem ntau pom nyob rau hauv cov khoom vaj tse, tuaj nyob rau hauv ntau yam xim, thiab ua rau cov pa luam yeeb dub thiab acrylonitrile tsw thaum hlawv.
PC (Polycarbonate): Pob tshab los yog translucent, feem ntau hu ua "pob tshab hlau," muaj zog tiv thaiv, thiab npuas tab sis tsis poob thaum hlawv.
PBT: Feem ntau opaque, feem ntau yog siv rau cov qhov (sockets) thiab relay vaj tse, muaj cov cua sov zoo, thiab ua kom muaj ntxhiab tsw thaum hlawv.
PA (Nylon): Milky dawb los yog daj daj, me ntsis hygroscopic, tsw zoo li cov plaub hau thaum hlawv, nws tus kheej - tua tom qab tua.
Tshawb xyuas Labeling thiab Certification Information:
Cov khoom raug cai feem ntau qhia cov ntaub ntawv los yog cov qauv siv tau:
Cov txheej sab nrauv yuav raug cim nrog "PC," "ABS," "PBT," thiab lwm yam, lossis qhia tias ua raws li tus qauv tshiab hauv tebchaws GB / T 1002-2023.
Cov txheej txheej ntawm cov xov hlau thiab cov cables yog luam tawm nrog tus lej qauv, xws li "BV" qhia txog tooj liab tub ntxhais PVC insulated hlau, thiab "YJV" qhia hla- txuas polyethylene insulated cable.
Cov nplaim hluav taws kub nyhiab xws li "V-0" thiab "V-1" yog cov cim npe rau cov khoom siv ua haujlwm siab xws li PC thiab PPO.
Kov thiab Physical Property Tests:
Flexibility: High- zoo tooj liab tub ntxhais hlau tsis yooj yim tawg txawm tias tom qab rov kho dua, thaum tooj liab tsis zoo-clad txhuas hlau yog nkig thiab yooj yim tawg.
Nplaim Retardancy: luv luv hlawv lub casing sab nrauv nrog lub teeb; engineering plastics xws li PC thiab PBT yog tus kheej - tua, thaum cov yas qis yuav txuas ntxiv hlawv.
Qhov sib txawv ntom ntom: Aluminium alloys yog qhov sib zog dua li cov hlau, uas tuaj yeem txiav txim siab los ntawm qhov hnyav.