Corrosion tsis kam ntawm stainless hlau flanges nyob rau hauv cov chaw hnyav
Stainless hlau flanges yog muaj txiaj ntsig zoo rau kev xeb, tshwj xeeb yog cov tub rog ua dej num xws li cov tub rog, tshuaj lom neeg, thiab ntsuas kub thiab kub-. Qhov tsis dhau no yog vim yog cov duab chromium-nplua nuj passive oxide zaj duab xis uas cov khoom ib txwm nyob ntawm qhov chaw ntawm stainless hlau.
🔧 Cov ntsiab lus tseem ceeb cuam tshuam rau kev ua kom corrosion
Alloy Muaj pes tsawg- Chromium, npib tsib xee, molybdenum, thiab nitrogen txhim kho corrosion tsis kam.
Nto tas- Cov chaw smoother cuam tshuam rau thaj chaw rau kev pib corrosion.
Ib puag ncig ib puag ncig- Kub, av noo, thiab tshuaj lom neeg raug teeb meem.
Qeb Yuav Xaiv- Qee qib kawm tau zoo dua rau cov chaw muaj kev nyab xeeb.
🌊 1. Cov tub rog thiab dej qab zib ib puag ncig
Kev twv: Chloride-ntxias pitting thiab crevice corrosion.
Cov Qib Pom Zoo:
316 / 316L- Zoo tsis kam vim molybdenum.
904L- Zoo tshaj qhov tsis kam rau Salosion.
Duplex 2205 \/ Super Duplex 2507- pitting zoo heev.
🧪 2. Tshuaj lom neeg ua cov nroj tsuag
Kev twv: Raug rau cov kua qaub, hauv paus, thiab oxidizing tshuaj.
Cov Qib Pom Zoo:
904L- Tiv thaiv sulfuric thiab phosphoric acids.
Alloy 20- Muaj zog tsis kam rau sulfuric acid.
Duplex- Ntsuas kev xeb thiab lub zog zoo.
🌡️ 3. Cov ntawv thov hnyav-
Kev twv: Oxidation thiab intergranular corrosion.
Cov Qib Pom Zoo:
321 / 347- Cov qhab nia ruaj khov rau cov cua sov tsis kam.
316L- Tswj corrosion tsis kam txog ~ 870 degree.
⚙️ 4. Kev lag luam thiab cov nroog muaj kuab paug
Kev twv: Acid los nag thiab huab cua ua pa.
Cov Qib Pom Zoo:
316L / 904L- Rau sab nraum zoov raug rau acidic ib puag ncig.
Cov qhab nia DuPlex- ntev-ntev kev tiv thaiv hauv cov huab cua qias.
🔢 Pitting tiv thaiv tus lej sib npaug (pren)
| Qib stainless hlau | Pren tus nqi | Chloride tsis kam |
|---|---|---|
| 304 | ~18 | Ncaj |
| 316 / 316L | ~23–25 | Zoo |
| 904L | ~35 | Zoo tshaj |
| 2205 Duplex | ~35–38 | Zoo tshaj |
| 2507 Super Duplex | ~40–45 | Zoo tshaj |
✅ Tag
316Lyog qhov kev xaiv txhim khu kev qha rau kev tiv thaiv corrosion dav.
904L thiab Super Duplexyog qhov zoo rau kev hnyav lossis cov chloride ib puag ncig.
Kev xaiv kom zoo ntawm stainless hlau qib yog qhov tseem ceebTxhawm rau kom ntseeg tau tias kev ua tau ntev ntev thiab raug nqi-efficiency.
