Corrosion Performance Comparison Ntawm Haynes Series Alloys

Haynes alloy kev taw qhia

 

Hais txog cov neeg siv khoom nug peb tau txais txog kev kuaj corrosion ntawm Haynes series alloys, peb tau sau cov ntaub ntawv ntawm corrosion zog ntawm Haynes series alloys thiab lwm yam kev daws teeb meem. Cia peb saib.

 

Thaum xaiv Haynes series alloys, qhov kev txiav txim siab feem ntau yuav tsum tau ua raws li qhov tshwj xeeb corrosive ib puag ncig. Kev nkag siab txog cov yam ntxwv ntawm qhov sib txawv corrosive ib puag ncig tuaj yeem pab koj xaiv qhov tseeb dua.

 

(Faj seeb: Kab lus no yog ua raws li cov teeb meem tseem ceeb uas tau tsa los ntawm qee cov neeg siv khoom uas tau yuav Haynes alloys, thiab piav qhia txog cov kev xav thiab kev paub dhau los. Koj qhov kev kho tau txais tos.)

 

Kev txiav txim siab tseem ceeb rau kev xaiv cov khoom siv hauv qhov sib txawv Corrosive ib puag ncig

Muaj kwv yees li plaub hom:

 

1. High-Tub kub Oxidation ib puag ncig:Qhov no yog hais txog cov txheej txheem ntawm cov khoom siv nrog oxygen nyob rau hauv siab - huab cua kub (los yog oxygen- ib puag ncig nplua nuj).

Kev xaiv zoo dua: Rau cov xwm txheej huab cua siab tshaj 1100 degree, Haynes 150 yog qhov kev xaiv zoo tshaj plaws, muab kev tiv thaiv oxidation zoo dua piv rau Haynes 230.

Kev Ntsuas Nyiaj Txiag: Hauv qab 1100 degree, Haynes 230 yog qhov kev xaiv pov thawj thiab txhim khu kev qha, ua tiav qhov sib npaug zoo ntawm kev ua haujlwm thiab tus nqi.

 

2. Kub Corrosion Ib puag ncig (Sulfation / Sulfate):Thaum cov roj muaj leej faj los yog ib puag ncig yog saline, kev puas tsuaj sulfate melt deposits tuaj yeem ua rau kub siab.

Kev xaiv sab saum toj: Haynes 188, nrog nws cov ntsiab lus siab chromium thiab tseem ceeb heev lanthanum, tsim ib qho chaw ruaj khov thiab ua raws li chromium oxide zaj duab xis, tshwj xeeb yog tsim los tawm tsam sulfate kub corrosion, ua rau nws yog qhov kev xaiv zoo tshaj plaws rau qhov chaw no.

Lwm txoj kev xaiv: Haynes 25 / L-605 thiab Haynes 747 kuj muaj kev tiv thaiv zoo rau sulfidation thiab kub corrosion thiab tuaj yeem suav tias yog lwm txoj hauv kev.

 

3. Molten ntsev ib puag ncig:Tshwj xeeb yog hais txog cov xwm txheej tsis zoo uas cuam tshuam nrog kev tshaj xov xwm xws li fluoride ntsev hauv cov tshuab hluav taws xob nuclear siab heev (xws li molten ntsev reactors).

Raws li kev tshawb fawb ntawm molten ntsev corrosion, amorphous hlau -raws li thiab npib tsib xee- cov txheej txheem ua kom pom kev zoo dua corrosion piv rau Haynes 230 substrate. Qhov no qhia tau hais tias nyob rau hauv ib puag ncig zoo li no, lub hauv paus alloy yuav xav tau cov txheej txheej tiv thaiv kom ua tau raws li kev ua neej ntev -.

 

4. Acidic aqueous daws:

Ntawm cov Haynes alloys, Haynes 747 paub txog nws qhov zoo corrosion kuj nyob rau hauv ntau yam kev lag luam tshuaj. Yog tias koj cov cuab yeej ntsib ob qho tib si kub thiab tshuaj lom neeg corrosion (xws li hauv tshuaj thiab petrochemical cov nroj tsuag), nws tuaj yeem suav tias yog kev xaiv.

 

Haynes series alloy khoom sib piv

Haynes 188

Haynes 25

Haynes 230

 

 

 

Kev Muag Khoom thiab Kev Ua Haujlwm Phau Ntawv Qhia

Raws li tus kws tshaj lij kev muag khoom, dhau li ntawm cov khoom siv, cov ntsiab lus siv tau yog qhov tseem ceeb sib npaug.

 **Txhais cov qauv thiab ntawv pov thawj:**

 

Thaum muab cov ntaub ntawv, nws yog ib qho tseem ceeb kom paub meej cov qauv kev qhia (piv txwv li, AMS, ASTM) kom ua raws thiab xav kom cov neeg muab khoom ua tiav Cov Ntaub Ntawv Xeem Cov Ntaub Ntawv (MTRs) kom ntseeg tau tias muaj pes tsawg leeg thiab kev ua tau zoo raws li cov qauv. Rau cov khoom siv dav hlau tseem ceeb, cov ntawv pov thawj cov khoom lag luam xws li AS9120, CE, thiab ISO yog qhov pib (saib Lork Alloy - Txog Peb, lossis tiv tauj peb ncaj qha kom paub meej).

 

** Tsom ntsoov rau Smelting thiab Thaum tshav kub kub kho txheej txheem:**

Cov yam ntxwv ntawm cov khoom siv yog txiav txim los ntawm cov txheej txheem smelting. Haynes Alloy feem ntau xav tau kev pom zoo ntawm kev siv Lub Tshuab Nqus Tsev Induction Melting (VIM) lossis cov txheej txheem VIM + Electroslag Remelting (VAR) kom paub meej purity thiab uniform microstructure. Tib lub sijhawm, kev kho cua sov hauv lub xeev ntawm cov khoom xa tuaj (xws li, lub xeev daws teeb meem) yuav tsum tau txhais kom meej, vim qhov no ncaj qha cuam tshuam rau kev ua haujlwm tom qab thiab kev ua haujlwm kawg.

 

** Xav txog Weldability thiab Machining Performance: **

Xav txog kev ua haujlwm tau zoo, feem ntau Haynes alloys yog weldable, tab sis Haynes 188 thiab Haynes 25/L-605 raug suav hais tias muaj qhov zoo dua weldability. Tag nrho cov siab - kub alloys muaj qhov muaj zog rau kev ua hauj lwm hardening, yuav tsum muaj lub tswv yim ntawm kev txiav ceev, siab pub tus nqi, thiab kev siv cov khoom hnav-resistant carbide txiav.

 

Kev txiav txim siab xaiv cov khoom tseem ceeb

 

Hauv cov ntsiab lus, koj tuaj yeem ua raws li qhov kev txiav txim siab no - ua lub hauv paus:

--Txoj kev tiv thaiv sulfate thermal corrosion → Ua kom pom tseeb ntawm Haynes 188 yam tsis muaj hesitation.

 

--To handle extreme high-temperature oxidation (>1100 degree) → Ua ntej Haynes 150.

 

--Kev sib npaug ntawm qhov kub thiab txias oxidation thiab tus nqi → Haynes 230 yog qhov kev xaiv zoo.

 

--Rau cov khoom uas ib txhij tiv taus qhov kub thiab txias, kev ntxhov siab, thiab tshuaj lom neeg corrosion → Xav txog Haynes 747.

 

--Rau daim ntawv thov kev kho mob cog los yog combating sulfidation → Haynes 25 / L-605 muaj qhov tshwj xeeb zoo.