Xaiv qhov raug 316 Qib rau Cartridge Heaters

Tsis yog txhua daim cartridge sov ua los ntawm 316 stainless hlau yog tib yam. Ntau tus neeg xav tias tsuas yog hais "316" txaus los xyuas kom ntev - kev ua tau zoo thiab kav ntev. Tab sis qhov tseeb, qhov sib txawv ntawm tus qauv 316 thiab 316L tuaj yeem txhais tau tias qhov sib txawv ntawm lub tshuab cua sov uas ua haujlwm tau zoo rau tsib xyoos thiab ib qho uas tawg tag rau rau lub hlis. Cov kws tshaj lij thiab cov kws tshaj lij kev muag khoom uas xav txhim kho kev ntseeg siab thiab tag nrho cov nqi ntawm cov tswv cuab yuav tsum paub qhov txawv me me no.

Lub ntsiab lus ntawm "L": Qhov txawv ntawm qhov uas tsis tshua muaj carbon ua
Qhov "L" hauv 316L txhais tau tias "Low Carbon." Qhov no tsis yog ib qho kev hloov me me hauv kev sib xyaw; nws muaj qhov cuam tshuam loj npaum li cas nws tuaj yeem ua tau zoo thiab nws tuaj yeem tiv taus corrosion. Nyob rau hauv ib txwm 316 stainless hlau, cov ntsiab lus carbon feem ntau yog tsawg, tab sis nws yuav siab txaus los tsim ib tug metallurgical mob hu ua "sensitization" thaum vuam los yog brazing ntawm kub. Thaum cov hlau yog rhuab mus rau qhov kub ntawm 450℃thiab 850℃(842℃F thiab 1562℃F), uas yog ib qho yooj yim ua thaum welding kawg kaus mom, davhlau ya nyob twg pins, los yog mounting flanges, chromium carbides (Cr23C6) tuaj yeem tsim raws li cov ciaj ciam ntawm cov hlau.


Cov nag lossis daus no siv chromium tawm ntawm cov hlau matrix ntawm nws. Chromium yog cov khoom uas ua rau cov txheej txheem tiv thaiv passive oxide. Raws li qhov tshwm sim, chromium- cov cheeb tsam depleted tsim ntawm cov ciam teb, uas ua rau lawv yooj yim heev rau corrode. Hom kev ua tsis tiav no yog hu ua "weld decay" lossis "intergranular corrosion." Lub tshuab cua sov lub tshuab hluav taws xob sheath yog nws qhov kev tiv thaiv tseem ceeb. Yog hais tias qhov tawg pib ntawm lub welded kawg foob los yog lub davhlau ya nyob twg kev twb kev txuas, nws feem ntau tshwm sim sai thiab tag, ua rau sheath perforation thiab nyob rau hauv luv luv circuits.

316L txwv cov pa roj carbon monoxide tsis pub ntau tshaj 0.03%, uas txo qis kev tsav tsheb rau chromium carbide kom tsim tau thaum tshav kub kub. Qhov no ua rau nws ib txwm resistant rau rhiab heev thiab kev tawm tsam tom qab. Yog li, rau ib qho khoom siv hluav taws xob uas tau welded thaum lub sij hawm tsim khoom (uas yog yuav luag tag nrho cov khoom lag luam muaj rau kev sib khi thiab txiav tawm), 316L yog qhov zoo tshaj plaws thiab cov khoom siv zoo tshaj plaws.

Xaiv cov khoom zoo: Nrhiav qhov sib npaug ntawm Corrosion Resistance thiab Mechanical Properties
Raws li kev paub ntau yam hauv kev tsim khoom thiab kev lag luam, yog tias lub tshuab rhaub dej kub tau welded ua ke, feem ntau nws yog qhov zoo dua los xaiv 316L. Nws tiv thaiv "weld decay" zoo heev, xyuas kom meej tias cov alloy qhov corrosion kuj tseem muaj zog nyob rau hauv tag nrho ib feem, txawm nyob rau hauv cov cheeb tsam uas feem ntau yuav cuam tshuam los ntawm tshav kub.

Tab sis kev xaiv cov ntaub ntawv tuaj yeem txhais tau tias kev xaiv. Muaj tsawg zaus uas luv luv heev- lub sij hawm siv lub zog ntawm qhov kub thiab txias yog qhov tseem ceeb tshaj qhov ntev - lub sij hawm corrosion kuj, zoo tib yam 316 tej zaum yuav zoo dua. Cov pa roj carbon ntau dua me ntsis tuaj yeem ua rau lub zog tawm los ntawm qhov kub thiab txias me ntsis. Txawm li cas los xij, rau feem ntau siv cua sov siv, qhov twg corrosion los ntawm cov txheej txheem xov xwm, tshuaj ntxuav tais diav, los yog huab cua chlorides yog lub ntsiab ua rau tsis ua hauj lwm, corrosion kuj ntawm 316L yog qhov tseem ceeb tshaj qhov no me ntsis lub zog teeb meem. Vim li no, 316L yog qib uas txhua leej txhua tus pom zoo rau kev pabcuam txhim khu kev qha.

Tshaj li qib: Lub luag haujlwm tseem ceeb ntawm cov qauv zoo thiab cov khoom siv
Lub hauv paus thiab qhov zoo ntawm cov khoom siv tseem ceeb kuj tseem ceeb heev, tab sis lawv feem ntau tsis quav ntsej. Kev ua lag luam rau stainless hlau thoob ntiaj teb yog loj, thiab qib ntawm steel billets yuav txawv heev. Lub tshuab cua sov uas tau ua lag luam raws li "316" tab sis ua los ntawm cov khoom noj uas muaj ntau cov khoom siv rov ua dua tshiab uas tsis muaj kev tswj hwm yuav muaj ntau dua cov kab mob phem (xws li leej faj thiab phosphorus) lossis cov khoom tsis sib xws ntawm cov ntsiab lus tseem ceeb (xws li molybdenum). Txawm hais tias nws qib nominal yog dab tsi, cov khoom siv no yuav tsis ua haujlwm zoo li npaj los tiv thaiv corrosion.

Cov neeg tsim khoom uas paub txog lawv cov khoom zoo thiab lub koob npe nrov ua raws li cov ntaub ntawv pov thawj nruj, zoo li ASTM A240 lossis AMS 5513. Cov qauv no tsis tsuas yog sau cov nyiaj tsawg kawg nkaus ntawm chromium, npib tsib xee, thiab molybdenum, tab sis lawv kuj tau teem caij nruj tshaj plaws ntawm impurities. Lawv yog ib txoj hauv kev zoo los ntsuas seb cov khoom ua tau zoo npaum li cas. Tau txais cov khoom siv cua sov los ntawm tus neeg muag khoom uas tau txais ntawv pov thawj, cov ntaub ntawv nyoos los ntawm cov khoom muaj npe nrov yog ib feem tseem ceeb ntawm kev tswj kev pheej hmoo.

Actionable Specifications: Los ntawm Kev Xav Tau Kom Zoo rau Kev Pom Zoo
Yog li, txhawm rau txheeb xyuas lub 316 stainless hlau cartridge rhaub, koj yuav tsum mus dhau qhov tsuas yog hais tias cov khoom siv zoo li cas. Ib tus kws tshaj lij thiab kev tiv thaiv tshwj xeeb yuav tsum ua kom pom tseeb tias yog dab tsi

Qib Siab: Qhia meej meej tias 316L xav tau tshwj tsis yog tias muaj qhov muaj zog, ua pov thawj rau tus qauv 316.

Kev Tswj Xyuas Cov Khoom Siv: Cov ntaub qhwv yuav tsum ua raws li tus qauv thoob ntiaj teb paub, xws li "ASTM A240 316L."

Kev Ntsuas Zoo: Rau lub hom phiaj- cov ntawv thov tseem ceeb, nws yog ib qho tseem ceeb heev uas yuav tau nug tus neeg muag khoom rau Mill Test Reports (MTRs) lossis Daim Ntawv Pov Thawj Ua Raws Li rau cov khoom siv raw siv hauv ntau lawm. Cov ntaub ntawv no qhia tau hais tias cov tshuaj pleev ib ce thiab lub cev zoo muaj tseeb.

Xaus: Ib Qhov Txheej Txheem rau Kev Ntseeg Cov Khoom
Hauv cov txheej txheem tseem ceeb hauv kev lag luam, tus nqi ntawm qhov tsis ua haujlwm vim tias cov cua kub tsis zoo tuaj yeem ua rau siab heev, suav nrog lub sijhawm tsim khoom ploj, cov khoom ploj, thiab cov teeb meem kev nyab xeeb. Txhawm rau xaiv cov khoom siv hluav taws xob uas muaj kev ntseeg siab, koj yuav tsum mus los ntawm kev ua tus neeg siv khoom tsis txaus ntseeg uas lees txais tus neeg muag khoom "tus qauv muab" rau tus neeg paub meej uas tau txiav txim siab cov cai rau cov khoom siv thiab cov txheej txheem siv tau. Txoj kev no tsis yog tsuas yog ua kom cov nqi qis xwb; nws kuj tseem hais txog kev ua kom lub cev ruaj khov, nyab xeeb, thiab kwv yees tau.

Yog tias qhov ua tsis tiav tsis yog ib qho kev xaiv, qhov zoo tshaj plaws ntev - lub hom phiaj yog kom hais kom cov ntaub ntawv traceability, xaiv cov neeg muab khoom nrog tsim muaj peev xwm thiab cov txheej txheem zoo, thiab xyuas kom meej tias cov khoom siv tshwj xeeb tsis muaj tseeb. Thaum kawg, kev ntseeg tseeb tsis yog los ntawm qib "magic" uas txhua tus siv. Hloov chaw, nws los ntawm kev paub meej tias qhov chaw thov kev ua haujlwm ua haujlwm li cas thiab ua tib zoo xaiv thiab kuaj cov ntaub ntawv uas tsim los nyob rau hauv ib puag ncig ntawd.