Demystifying yog vim li cas tom qab nce tsis ua hauj lwm tus nqi ntawm faucets

Tam sim no, ntau yam khoom siv txhua hnub yog ua los ntawm tooj liab, hlau, stainless hlau thiab lwm yam ntaub ntawv. Cov ntaub ntawv no muaj cov hlau hnyav. Yog tias lawv tsis ua haujlwm zoo, lawv tuaj yeem tshaj tus qauv.

Piv txwv li, Cov ntsiab lus tseem ceeb ntawm stainless hlau muaj xws li manganese, yeebsab, thiab npib tsib xee. Txhawm rau kom muaj kev tiv thaiv corrosion, stainless hlau yuav tsum muaj ib qho nyiaj ntawm chromium. Yog tias cov chromium raug tswj tsis raug, nws tuaj yeem ua rau chromium ntau dhau. Nyob rau hauv tib txoj kev, Kev tswj tsis zoo ntawm manganese tuaj yeem ua rau muaj manganese ntau dhau.

Cov tooj liab alloy siv los ua cov faucets muaj cov cim ntawm cov hlau xws li hlau, tooj dawb, thiab coj. Yog tsis muaj txhuas, Nws yog ib qho nyuaj rau tsim thaum lub sij hawm casting. Qhov siab dua cov ntsiab lus txhuas, qhov yooj yim txheej txheem casting. Yog li ntawd, tooj liab faucets nyob rau hauv kev ua lag luam feem ntau muaj ib tug npaum li cas ntawm txhuas. Yog tias lub Hoobkas tsis ua haujlwm zoo ntawm kev tshem cov hlau lead thaum tsim khoom, nws yuav ua rau cov hlau lead ntau dhau.

Lwm qhov laj thawj yog tias lub tuam txhab thev naus laus zis thiab cov cuab yeej siv tau dhau los, ua rau cov kab mob tsis tuaj yeem tswj tau. Feem ntau, thaum cov cuab yeej tshiab yog thawj zaug muab tso rau hauv ntau lawm, nws cov khoom tsim nyog, tab sis thaum cov cuab yeej siv tau ntev, cov khoom yuav tshaj cov kab lus. Qhov teeb meem no tsis tuaj yeem kho los ntawm qhov kev pom zoo thiab tsuas yog hloov nrog cov cuab yeej tshiab. Txawm li cas los, some factories continue to use them in order to save money. This is a technical and cost issue.

Ib tus neeg muag khoom ntawm cov khoom siv chav dej hais rau cov neeg sau xov xwm tias feem ntau cov faucets ntawm lub khw tam sim no muaj cov tooj liab, tab sis qhov zoo sib txawv. Faucets los ntawm cov tuam txhab me me thiab cov nqi pheej yig dua yuav zoo dua cov hlau lead. Qhov no yog vim qee cov tuam txhab lag luam tsis yuav cov qauv tooj dag kom tswj tau cov nqi, tab sis yuav pheej yig txhuas tooj dag ua raw khoom los ntawm cov chaw ua haujlwm me me. Cov hlau lead no zoo li muaj cov ntsiab lus txhuas siab, tab sis tus nqi tsuas yog ib nrab ntawm cov tooj dag hlau.

Yuav ua li cas paub qhov txawv ntawm cov faucets tsis zoo los ntawm tus nqi? Ib tus neeg sab hauv kev lag luam tau hais rau cov neeg sau xov xwm tias tooj liab faucet nrog cov khoom siv tes ua haujlwm yuav tsum raug nqi ntau dua ib puas yuan, thaum lub faucet muaj nqis kaum tawm yuan zoo li yuav siv cov hlau lead.

“Piv rau cov khoom loj, faucets muaj nqis kaum tawm yuan yeej tsis tsim nyog siv sij hawm ntau thiab lub zog los xaiv ib tug los ntawm ib tug, thiab yuav tsis xyuam xim rau qhov teeb meem ntawm cov ntsiab lus txhuas ntau dhau.” Ib tug pej xeem Shanghai uas tab tom kho nws lub tsev hais rau cov neeg sau xov xwm.

Hauv qhov no, Qee cov neeg hauv kev lag luam tau hais tias cov neeg siv khoom hauv tsev tsis tau them nyiaj txaus rau qhov zoo thiab kev nyab xeeb ntawm faucets, uas kuj tau muab ntau yam tsis tsim nyog thiab tsis zoo faucets rau lub sijhawm.