Thaum nws los txog rau cov hlau uas tiv taus cua sov, peb yuav tsum hais txog kev lag luam kho cua sov; thaum nws los txog rau kev kho cua sov, peb yuav tsum tham txog peb qhov hluav taws kub hauv kev lag luam, annealing, quenching, thiab tempering. Yog li qhov sib txawv ntawm peb yam no yog dab tsi?
(Ib qho). Hom kev ua kom sov
1. Ua kom tiav annealing thiab isothermal annealing
Kev ua kom tiav annealing tseem hu ua recrystallization annealing, feem ntau hu ua annealing. Qhov annealing no feem ntau yog siv rau kev castings, forgings thiab kub-dov profiles ntawm ntau yam carbon steels thiab alloy steels nrog hypoeutectoid compositions, thiab qee zaum siv rau cov qauv welded. Nws feem ntau yog siv ua kev kho cua sov kawg ntawm qee qhov workpieces tsis tseem ceeb, lossis ua kev kho cua sov ua ntej ntawm qee qhov workpieces.
2. kev ua kom sov spheroidizing
Spheroidizing annealing feem ntau yog siv rau hypereutectoid carbon steel thiab alloy tool steel (xws li cov hom hlau siv hauv kev tsim cov cuab yeej txiav, cov cuab yeej ntsuas, thiab pwm). Nws lub hom phiaj tseem ceeb yog txo qhov nyuaj, txhim kho kev siv tshuab, thiab npaj rau kev quenching tom qab.
3. Kev ntxhov siab txo kev kub ntxhov
Kev ua kom txo qhov kev ntxhov siab tseem hu ua kev ua kom kub tsawg (lossis kev ua kom kub siab). Hom kev ua kom kub no feem ntau yog siv los tshem tawm cov kev ntxhov siab seem hauv cov castings, forgings, welding parts, hot-dov parts, cold-drawn parts, thiab lwm yam. Yog tias cov kev ntxhov siab no tsis raug tshem tawm, nws yuav ua rau cov hlau deform lossis tawg tom qab ib lub sijhawm lossis thaum lub sijhawm txiav tom ntej.
(Ob). Kev tua hluav taws
Cov txheej txheem tseem ceeb uas siv los txhim kho qhov nyuaj yog cua sov, khaws cia cua sov, thiab txias sai. Cov khoom siv txias feem ntau siv yog brine, dej thiab roj. Cov khoom ua haujlwm uas tau quenched hauv dej ntsev yooj yim kom tau txais qhov nyuaj siab thiab du nto, thiab tsis yooj yim rau cov chaw mos uas tsis tau quenched, tab sis nws yooj yim ua rau muaj kev hloov pauv loj ntawm cov khoom ua haujlwm thiab txawm tias tawg. Kev siv roj ua cov khoom siv quenching tsuas yog tsim rau quenching qee cov hlau alloy lossis cov khoom ua haujlwm carbon me me uas qhov ruaj khov ntawm supercooled austenite loj heev.
(Peb). Kev ua kom sov
1. Txo qhov brittleness thiab tshem tawm lossis txo qhov kev ntxhov siab sab hauv. Tom qab quenching, cov khoom hlau yuav muaj kev ntxhov siab sab hauv thiab brittleness loj heev. Yog tias lawv tsis raug tempered raws sijhawm, cov khoom hlau feem ntau yuav deform lossis tawg.
2. Tau txais cov khoom siv kho tshuab uas xav tau ntawm cov khoom ua haujlwm. Tom qab quenching, cov khoom ua haujlwm muaj qhov nyuaj siab thiab qhov tawg yooj yim. Yuav kom ua tau raws li qhov xav tau ntawm ntau yam khoom ua haujlwm, qhov nyuaj tuaj yeem hloov kho los ntawm kev tempering kom haum, txo qhov tawg yooj yim thiab tau txais qhov tawv uas xav tau. Yas.
3. Qhov loj ntawm cov khoom ua haujlwm ruaj khov
4. Rau qee cov hlau alloy uas nyuaj rau mos los ntawm kev annealing, kev kub siab tempering feem ntau yog siv tom qab quenching (lossis normalizing) kom sau cov carbides hauv cov hlau thiab txo qhov nyuaj kom yooj yim txiav.
Lub sijhawm tshaj tawm: Plaub Hlis-10-2024
