Dab tsi yog siv hauv stainless hlau?

Dab tsi yog siv hauv stainless hlau?

Stainless hlau yog cov hlau alloy feem ntau muaj hlau, nrog tsawg kawg ntawm 10.5% chromium cov ntsiab lus los ntawm huab hwm coj. Qhov sib ntxiv ntawm chromium rau cov hlau tsim ib txheej oxide passive rau ntawm qhov chaw, uas muab stainless hlau nws cov khoom tiv thaiv corrosion. Dhau li ntawm cov hlau thiab chromium, stainless hlau kuj tseem muaj ntau lwm yam alloying ntsiab los txhim kho nws cov khoom siv thiab tshuaj lom neeg.

Cov feem ntau pom muaj nyob rau hauv stainless hlau alloys muaj xws li:

1. Chromium (Cr): Lub ntsiab alloying nyob rau hauv stainless hlau, chromium txhim khu kev tiv thaiv corrosion los ntawm kev tsim cov oxide txheej tiv thaiv ntawm qhov chaw.

2. Nickel (Ni): Nickel feem ntau ntxiv rau stainless hlau los txhim kho nws cov ductility, toughness, thiab corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv cov ntawv thov kub.

3. Manganese (Mn): Manganese pab txhawb lub zog thiab formability ntawm stainless hlau.

4. Cov pa roj carbon (C): Cov pa roj carbon muaj nyob hauv cov hlau tsis huv los muab cov tawv tawv thiab lub zog. Txawm li cas los xij, cov ntsiab lus carbon hauv stainless hlau feem ntau khaws cia qis kom muaj kev tiv thaiv corrosion.

5. Silicon (Si): Silicon yog ntxiv los txhim kho kev tiv thaiv scaling ntawm qhov kub thiab txias thiab txhim kho cov hlau lub zog.

6. Molybdenum (Mo): Molybdenum feem ntau muaj nyob rau hauv stainless hlau los txhim kho nws cov corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv hnyav tshuaj.

7. Nitrogen (N): Nitrogen tuaj yeem muab ntxiv los txhim kho lub zog thiab corrosion kuj ntawm stainless hlau.

8. Copper (Cu): Hauv qee qhov tshwj xeeb stainless hlau alloys, tooj liab yuav raug ntxiv los txhim kho corrosion kuj nyob rau hauv tej yam kev mob.

Kev sib xyaw tshwj xeeb thiab kev faib ua feem ntawm cov khoom no txawv nyob ntawm seb hom lossis qib ntawm stainless hlau. Cov qib sib txawv yog tsim los rau kev siv sib txawv, xws li austenitic stainless hlau (xws li, 304, 316), ferritic stainless hlau, thiab martensitic stainless hlau. Qhov kev xaiv ntawm cov ntsiab lus alloying cuam tshuam rau txhua yam, thermal, thiab corrosion-resistant zog ntawm stainless hlau.