Cov kav dej ua lag luam stainless hlau yog cov khoom tseem ceeb hauv ntau yam lag luam vim lawv lub zog zoo heev, tiv taus corrosion, thiab ua siab ntev rau qhov kub thiab txias. Nyob ntawm qhov chaw ua haujlwm thiab cov lus qhia tshwj xeeb, cov qib siv feem ntau suav nrog 304, 316, 321, 347, 904L, nrog rau cov hlau stainless duplex zoo li2205thiab2507Tsab xov xwm no tshawb nrhiav txog kev ua tau zoo, lub peev xwm siab, thiab cov teb siv ntawm cov kav dej hlau tsis xeb kom coj kev xaiv cov khoom siv kom raug.
1. Cov Qib Hlau Stainless Feem Ntau thiab Lawv Cov Yam Ntxwv
•304L stainless hlau yeeb nkab kev lag luamRaws li cov hlau 304 uas tsis muaj carbon ntau, feem ntau, nws txoj kev tiv thaiv corrosion zoo ib yam li 304, tab sis tom qab vuam lossis txo kev ntxhov siab, nws txoj kev tiv thaiv rau intergranular corrosion zoo heev, thiab nws tuaj yeem tswj tau qhov corrosion zoo yam tsis muaj kev kho cua sov.
•304 stainless hlau yeeb nkab kev lag luam: Nws muaj kev tiv thaiv corrosion zoo, tiv thaiv kub, tsis kub thiab cov khoom siv kho tshuab, cov khoom ua haujlwm kub zoo xws li stamping thiab khoov, thiab tsis muaj kev kho cua sov hardening phenomenon. Siv: cov khoom siv rooj tog, txee, boilers, khoom siv tsheb, khoom siv kho mob, cov ntaub ntawv tsim kho, kev lag luam zaub mov (siv qhov kub -196 ° C-700 ° C)
Cov yam ntxwv tseem ceeb ntawm 310 stainless hlau yeeb nkab kev lag luam yog: kev ua haujlwm kub siab, feem ntau siv rau hauv boilers, cov yeeb nkab tso pa tawm hauv tsheb. Lwm yam khoom siv yog dav dav.
•303 cov yeeb nkab ua lag luam stainless hlau: Los ntawm kev ntxiv me ntsis sulfur thiab phosphorus, nws yooj yim dua rau kev txiav dua li 304, thiab lwm yam khoom zoo ib yam li 304.
•302 cov yeeb nkab ua lag luam stainless hlau: 302 cov hlau stainless hlau siv dav hauv cov khoom siv hauv tsheb, aviation, cov cuab yeej kho vajtse aerospace, thiab kev lag luam tshuaj lom neeg. Tshwj xeeb raws li nram no: tes ua tes, bearings, paj swb, cov cuab yeej kho mob, cov khoom siv hluav taws xob, thiab lwm yam. Nta: 302 stainless hlau pob yog austenitic hlau, uas ze rau 304, tab sis 302 muaj qhov nyuaj dua, HRC ≤ 28, thiab muaj xeb zoo thiab tiv taus corrosion.
•301 cov yeeb nkab ua lag luam stainless hlau: zoo ductility, siv rau cov khoom pwm. Nws kuj tuaj yeem ua kom tawv sai sai los ntawm kev ua haujlwm tshuab. Zoo weldability. Kev tiv thaiv hnav thiab lub zog qaug zog zoo dua li 304 stainless hlau.
• 202 stainless hlau yeeb nkab kev lag luam: yog chromium-nickel-manganese austenitic stainless hlau, nrog kev ua tau zoo dua li 201 stainless hlau
• 201 cov yeeb nkab hlau tsis xeb: yog cov hlau tsis xeb chromium-nickel-manganese austenitic, nrog rau qhov tsis tshua muaj magnetism
•410 stainless hlau yeeb nkab kev lag luam: yog martensite (high-strength chromium steel), nrog kev hnav zoo thiab kev tiv thaiv corrosion tsis zoo.
•420 stainless hlau yeeb nkab kev lag luam: "Qib cuab yeej" martensitic hlau, zoo ib yam li Brinell high chromium hlau, yog hlau stainless thaum ntxov heev. Nws kuj siv rau riam phais thiab tuaj yeem ua kom ci heev.
• 430 stainless hlau yeeb nkab kev lag luam: ferritic stainless hlau, siv rau kev kho kom zoo nkauj, xws li cov khoom siv hauv tsheb. Zoo formability, tab sis tsis zoo kub thiab corrosion tsis kam
2. Kev Tiv Thaiv Siab ntawm Cov Kav Hlau Stainless
Lub peev xwm siab ntawm cov yeeb nkab hlau tsis xeb nyob ntawm nws qhov loj (txoj kab uas hla sab nraud), phab ntsa tuab (piv txwv li, SCH40, SCH80), thiab qhov kub ua haujlwm. Cov ntsiab cai tseem ceeb:
• Phab ntsa tuab dua thiab cov kab uas me dua ua rau muaj kev tiv taus siab dua.
•Qhov kub siab dua ua rau cov khoom siv zog thiab qhov siab txo qis.
• Cov hlau duplex zoo li 2205 muab yuav luag ob npaug ntawm lub zog ntawm 316L.
Piv txwv li, ib lub yeeb nkab stainless hlau SCH40 304 uas loj 4 nti tuaj yeem tuav tau li ntawm 1102 psi nyob rau hauv cov xwm txheej ib txwm muaj. Ib lub yeeb nkab 1 nti tuaj yeem tshaj 2000 psi. Cov kws ua haujlwm yuav tsum sab laj nrog ASME B31.3 lossis cov qauv zoo sib xws rau kev ntsuas qhov siab raug.
3. Kev Ua Haujlwm Corrosion Hauv Qhov Chaw Nyuaj Siab
Ib puag ncig uas muaj Chloride ntau
304 feem ntau yuav muaj qhov thiab SCC nyob rau hauv cov chaw uas muaj ntsev ntau. 316L lossis siab dua yog qhov pom zoo. Rau cov xwm txheej hnyav xws li dej hiav txwv lossis tshuaj tsuag ntsev, 2205, 2507, lossis 904L yog qhov zoo dua.
Cov Khoom Siv Acidic lossis Oxidizing
316L ua tau zoo hauv cov kua qaub tsis muaj zog. Rau cov kua qaub uas tawv heev xws li sulfuric lossis phosphoric acid, xaiv 904L lossis cov hlau duplex uas muaj hlau ntau.
Kev Oxidation Kub Siab
Rau qhov kub tshaj 500°C, 304 thiab 316 tej zaum yuav tsis ua haujlwm zoo. Siv cov qib ruaj khov xws li 321 lossis 347 rau kev pabcuam txuas ntxiv mus txog ~ 900°C.
4. Cov Ntawv Thov Kev Lag Luam Tseem Ceeb
Kev Lag Luam Roj thiab Roj Av
Siv rau hauv cov kav dej ua haujlwm, cov khoom hloov cua sov, thiab cov kab thauj mus los. Rau cov pa roj qaub thiab cov tshuaj chloride, 2205/2507/904L yog qhov zoo dua. Cov hlau Duplex siv dav hauv cov khoom hloov cua sov rau lawv lub zog siab thiab kev tiv thaiv corrosion.
Khoom Noj & Dej Haus
Qhov chaw du thiab tiaj tiaj tiv thaiv cov kab mob loj hlob. 304/316L zoo tagnrho rau cov mis nyuj, ua npias, thiab cov kua ntses. 316L ua haujlwm zoo dua nrog cov khoom noj uas muaj kua qaub lossis ntsev. Cov kav dej feem ntau yog electropolished rau kev huv.
Kev Lag Luam Tshuaj
Yuav tsum tau muaj kev ntshiab siab thiab tiv taus xeb. 316L thiab cov qauv zoo li 316LVM yog siv rau cov dej huv thiab CIP/SIP systems. Cov nto feem ntau yog iav-polished.
5. Phau Ntawv Qhia Xaiv Qib Kawm Los Ntawm Daim Ntawv Thov
| Ib puag ncig ntawm daim ntawv thov | Cov Qib Pom Zoo |
| Dej / Cua Dav Dav | 304 / 304L |
| Ib puag ncig uas muaj Chloride ntau | 316 / 316L lossis 2205 |
| Huab Cua Kub Siab | 321 / 347 |
| Cov kua qaub muaj zog / phosphoric | 904L, 2507 |
| Cov Txheej Txheem Huv Si Qib Khoom Noj | 316L (Tshuaj txhuam hluav taws xob) |
| Cov Txheej Txheem Tshuaj | 316L / 316LVM |
Lub sijhawm tshaj tawm: Tsib Hlis-06-2025