Stainless hlau puas yuav nyiam cov hlau nplaum?
Qee tus tuaj yeem nyiam los ntawm cov hlau nplaum, thaum lwm tus yog qhov nyuaj lossis tsis tuaj yeem nyiam los ntawm cov hlau nplaum.
1. Cov hlau nplaum nyiam dab tsi?
Cov hlau nplaum nyiam cov khoom ferromagnetic.
Txawm hais tias nws tuaj yeem nyiam los ntawm cov hlau nplaum tseem ceeb yog nyob ntawm cov ntsiab lus ntawm cov khoom ferromagnetic hauv cov khoom. Yog tias cov ntsiab lus loj, nws yuav nyiam; yog tias cov ntsiab lus me me, nws yuav tsis yooj yim rau kev nyob thiab tsis tuaj yeem nyiam los ntawm cov hlau nplaum.
2. Dab tsi yog stainless hlau?
Stainless hlau tau muab faib ua peb pawg loj: austenitic stainless hlau, ferritic stainless hlau thiab martensitic stainless hlau.
Austenitic stainless hlau muaj 16% mus rau 26% chromium thiab tsawg dua 35% npib tsib xee, feem ntau muaj kev tiv thaiv corrosion siab tshaj, tsis tuaj yeem ua kom muaj zog los ntawm kev kho cua sov, thiab tsis yog hlau nplaum; hom feem ntau yog 18/8, lossis qib 304, uas yog, nws muaj 18% chromium thiab 8% npib tsib xee; Kev siv ib txwm muaj xws li kev lag luam dav hlau, khoom noj siv mis thiab zaub mov ua lag luam.
Standard ferritic stainless hlau muaj 10.5%-27% chromium tab sis tsis muaj npib tsib xee. Vim nws cov ntsiab lus carbon tsawg (tsawg dua 0.2%), nws tsis tuaj yeem ua kom muaj zog los ntawm kev kho cua sov thiab tsuas yog siv rau hauv cov xwm txheej uas yuav tsum muaj kev tiv thaiv corrosion tsis siab, xws li kev tsim kho thiab tsheb. Hais txog kev kho kom zoo nkauj.
Martensitic stainless hlau feem ntau muaj 11.5% mus rau 18% chromium thiab tsawg dua 1.2% carbon, qee zaum kuj muaj npib tsib xee. Nws tuaj yeem ua kom muaj zog los ntawm kev kho cua sov thiab muaj qhov nruab nrab corrosion kuj. Nws yog siv rau hauv cov riam, cov cuab yeej phais, wrenches thiab turbines.
Stainless hlau yog ib qho khoom sib xyaw (alloy), tsis yog ib yam khoom ntshiab. Vim hais tias austenitic stainless hlau ntxiv cov chromium thiab npib tsib xee rau cov hlau, cov qauv sab hauv ntawm cov hlau nthuav tawm cov txheej txheem hu ua austenite. Cov qauv no tsis muaj qhov sib nqus permeability thiab tsis tuaj yeem nyiam los ntawm cov hlau nplaum. Ferritic stainless hlau thiab martensitic stainless hlau yog ferromagnetic.
Hauv lwm lo lus, austenitic stainless hlau muaj cov ntsiab lus ntawm ferromagnetic tsawg, yog li nws nyuaj los yog tsis tuaj yeem nyiam los ntawm cov hlau nplaum; thaum ferritic stainless hlau thiab martensitic stainless hlau muaj cov ntsiab lus siab ntawm ferromagnetic tshuaj thiab feem ntau tuaj yeem nyiam los ntawm cov hlau nplaum.
