Ua ib pawg tseem ceeb ntawm cov phaj hlau, cov phaj thawv ua lub luag haujlwm tseem ceeb hauv kev lag luam niaj hnub no. Vim lawv cov khoom sib xyaw tshwj xeeb thiab cov yam ntxwv, lawv feem ntau yog siv los tsim cov hlab siab kom ua tau raws li qhov yuav tsum tau ua ntawm kev siab, kub thiab kev tiv thaiv corrosion hauv ntau qhov xwm txheej kev lag luam.
Kev sib xyaw tshwj xeeb thiab kev ua tau zoo
Cov tshuaj lom neeg ntawm cov phaj thawv tau tsim ua tib zoo kom ntseeg tau tias lawv muaj kev ua tau zoo heev. Ntxiv rau cov ntsiab lus tseem ceeb, cov khoom sib xyaw xws li chromium, nickel, molybdenum, thiab vanadium raug ntxiv raws li qhov chaw siv sib txawv thiab cov kev xav tau kev ua tau zoo. Kev ntxiv cov ntsiab lus no tuaj yeem txhim kho lub zog, kev tawv, kev tiv thaiv corrosion thiab kev tiv thaiv kub ntawm cov phaj thawv, ua rau lawv haum rau ntau yam kev ua haujlwm nyuaj.
Hais txog cov khoom siv kho tshuab, cov phaj thawv muaj lub zog zoo heev thiab tawv. Lub zog siab ua rau lawv tiv taus qhov siab loj yam tsis muaj kev hloov pauv lossis tawg; qhov tawv zoo tuaj yeem zam kev tawg yooj yim hauv qab lub zog sab nraud xws li kev cuam tshuam lossis kev co, ua kom ntseeg tau tias kev ua haujlwm zoo ntawm cov khoom siv. Tib lub sijhawm, nws qhov kev ua haujlwm vuam zoo thiab kev ua tiav ua rau nws yooj yim los ua cov thawv siab ntawm ntau yam duab thiab cov lus qhia kom tau raws li ntau yam kev xav tau engineering.
Kev faib tawm nplua nuj thiab ntau yam
Raws li cov qauv sib txawv, cov phaj thawv tuaj yeem muab faib ua ntau txoj kev. Raws li lub hom phiaj, nws tuaj yeem muab faib ua cov hlau siab dav dav, cov hlau siab qis, cov hlau siab kub, cov hlau tsis xeb, thiab lwm yam. Cov hlau siab dav dav yog tsim rau qhov kub nruab nrab thiab ib txwm, qhov kub nruab nrab thiab qis, thiab yog cov khoom siv yooj yim tshaj plaws; cov hlau siab qis muaj qhov kub qis zoo thiab tsim nyog rau qhov kub qis; cov hlau siab kub tuaj yeem tswj tau qhov ua tau zoo hauv qhov kub siab thiab ua tau raws li qhov yuav tsum tau ua ntawm qhov kub siab; cov hlau sib xyaw ua ke ua ke qhov tsis kam ntawm cov hlau tsis xeb thiab lub zog ntawm cov hlau ib txwm, thiab tsim nyog rau cov xwm txheej uas muaj cov kev cai tshwj xeeb rau kev tiv thaiv corrosion.
Raws li cov tshuaj lom neeg sib xyaw, cov phaj thawv tuaj yeem muab faib ua cov phaj thawv carbon steel, cov phaj thawv hlau tsis tshua muaj alloy thiab cov phaj thawv stainless hlau. Cov phaj thawv carbon steel muaj tus nqi qis thiab kev ua haujlwm zoo; cov phaj thawv hlau tsis tshua muaj alloy tau txhim kho lub zog, kev tawv thiab kev tiv thaiv corrosion los ntawm kev ntxiv cov khoom sib xyaw; cov phaj thawv stainless hlau feem ntau siv rau hauv kev lag luam uas muaj kev tiv thaiv corrosion siab heev xws li kev lag luam tshuaj lom neeg thiab zaub mov vim lawv qhov kev tiv thaiv corrosion zoo heev.
Cov teb thov dav dav
Cov phaj ntim muaj ntau yam kev siv thiab ua lub luag haujlwm tseem ceeb hauv kev lag luam xws li roj av, kev lag luam tshuaj lom neeg, chaw tsim hluav taws xob, boilers, thiab lwm yam. Hauv kev lag luam petrochemical, nws yog siv los tsim cov khoom siv xws li reactors, cov cua sov sib pauv, cov cais, cov thoob khib nyiab kheej kheej, cov roj thiab cov roj tank, thiab cov thoob khib nyiab roj liquefied. Cov khoom siv no yuav tsum tau ua haujlwm ntev hauv qab qhov xwm txheej hnyav xws li kub siab, siab siab, thiab xeb muaj zog. Kev ua tau zoo ntawm cov phaj ntim muab kev lees paub txhim khu kev qha rau lawv txoj kev ua haujlwm zoo thiab ruaj khov.
Hauv kev tsim cov chaw tsim hluav taws xob thiab cov boilers, cov phaj ntim khoom siv los tsim cov khoom tseem ceeb xws li cov nruas boiler thiab cov hlab ntsha nuclear reactor. Cov nruas boiler yuav tsum tiv taus qhov kub thiab txias siab, uas xav tau lub zog siab heev thiab kev tiv taus qhov kub siab ntawm cov ntaub ntawv; cov hlab ntsha nuclear reactor muaj feem cuam tshuam rau kev ua haujlwm zoo ntawm cov chaw tsim hluav taws xob nuclear, thiab yuav luag cov qauv nruj tau muab rau qhov zoo thiab kev ua tau zoo ntawm cov phaj ntim khoom.
Tsis tas li ntawd xwb, hauv kev lag luam tshuaj, khoom noj, kev tiv thaiv ib puag ncig thiab lwm yam lag luam, cov phaj thawv kuj tseem siv los tsim ntau yam khoom siv cia khoom thiab cov tshuaj tiv thaiv kom ua tau raws li kev lag luam cov kev xav tau tshwj xeeb rau kev huv, kev tiv thaiv corrosion, thiab lwm yam.
Kev xa khoom sib txawv
Cov xwm txheej xa khoom ntawm cov phaj thawv feem ntau suav nrog kev dov kub, kev tswj hwm dov, normalizing, normalizing + tempering, tempering + quenching (tempering), thiab lwm yam. Cov xwm txheej xa khoom sib txawv yuav ua rau cov phaj thawv nthuav tawm cov koom haum thiab cov khoom sib txawv. Hauv lub xeev kub-kub, tus nqi ntawm cov phaj hlau qis, tab sis qhov sib xws ntawm kev ua tau zoo tsis zoo; kev dov tswj hwm tuaj yeem ua kom cov nplej thiab txhim kho lub zog thiab tawv ntawm cov phaj hlau los ntawm kev tswj hwm cov txheej txheem dov; normalizing tuaj yeem ua rau cov qauv ntawm cov phaj hlau sib xws thiab txhim kho cov khoom siv kho tshuab; normalizing + tempering tuaj yeem tshem tawm kev ntxhov siab sab hauv, txhim kho kev tawv thiab kev ruaj khov ntawm qhov ntev; quenching thiab tempering tuaj yeem ua rau cov phaj hlau tau txais kev sib xyaw zoo tshaj plaws ntawm lub zog siab thiab tawv zoo.
Kev xaiv lub xeev xa khoom tsim nyog yuav tsum tau xav txog ntau yam xws li cov xwm txheej siv, cov txheej txheem ua khoom thiab tus nqi ntawm lub thawv. Piv txwv li, rau cov thawv siab uas raug kev nyuaj siab thiab kev cuam tshuam ntau dua, lub xeev xa khoom ntawm kev kho quenching thiab tempering feem ntau siv; thaum rau qee lub thawv uas rhiab heev rau tus nqi thiab muaj qhov yuav tsum tau ua haujlwm qis dua, cov phaj thawv kub-kub lossis cov phaj thawv ib txwm muaj yuav tsim nyog dua.
Lub sijhawm tshaj tawm: Lub Xya Hli-22-2025