Qhov sib txawv tseem ceeb ntawm quenching thiab tempering yog tias quenching yog ceev txias ntawm lub workpiece, whereas tempering yog kub-kho ib workpiece.
Quenching thiab tempering yog cov txheej txheem tseem ceeb uas siv los ntxiv dag zog thiab tawv cov ntaub ntawv xws li hlau thiab lwm yam hlau-raws li alloys. Cov txheej txheem no koom nrog cov cua kub ceev thiab cua txias kom teeb tsa cov khoom hauv ib txoj hauj lwm tam sim ntawd. Ntxiv mus, cov txheej txheem no yuav tsum tau tswj nruj me ntsis.
Kev Quenching yog dab tsi?
Quenching yog cov txheej txheem ntawm kev ua kom txias sai sai tom qab kev kho cua sov ntawm lub workpiece. Peb tuaj yeem ua qhov no siv dej, roj lossis cua.quenching yog ib qho tseem ceeb kom tau txais cov khoom zoo ntawm lub workpiece. Hauv cov txheej txheem no, cov txheej txheem uas tsis muaj qhov kub thiab txias tsis tshwm sim, piv txwv li kev hloov pauv theem. Ntxiv mus, quenching tuaj yeem txo cov siv lead ua grain loj ntawm cov ntaub ntawv, xws li cov khoom siv hlau thiab cov ntaub ntawv yas, ua kom cov tawv tawv. Tsis tas li ntawd, cov txheej txheem no feem ntau yog siv rau hardening steel.
Daim duab 01: Quenching
Feem ntau, cam khwb cia hlau muaj qhov sib xws, mos crystal grain qauv uas peb hu ua "pearlitic grain structure". Txij li nws yog mos, nws tsis muaj txiaj ntsig hauv kev lag luam; Yog li, peb tuaj yeem hloov cov qauv no rau hauv "martensitic grain qauv", uas muaj lub zog siab thiab yog li ntawd, muaj zog heev rau deformation. Yog li, peb siv cov txheej txheem quenching rau lub hom phiaj no.
Dab tsi yog Tempering?
Tempering yog txheej txheem uas muaj kev kho cua sov kom ua rau muaj zog ntawm cov hlau-raws li alloys. Tsis tas li ntawd, cov txheej txheem no tseem ceeb heev hauv kev tshem tawm qee qhov nyuaj ntawm cov hlau. Hauv cov txheej txheem no, ua ntej peb yuav tsum ua kom sov cov hlau mus rau qhov kub hauv qab ntawm qhov tseem ceeb rau qee lub sijhawm, thiab tom qab ntawd peb yuav tsum tso cov khoom kom txias hauv huab cua. Qhov ntsuas kub txiav txim siab qhov hardness peb tuaj yeem tshem tawm ntawm cov hlau. Txawm li cas los xij, qhov kub ntawm qhov uas peb yuav ua kom sov cov hlau nyob ntawm qhov muaj pes tsawg leeg ntawm cov hlau los yog alloy thiab cov khoom ntawm lub siab nyiam. Piv txwv li, qhov kub tsis tshua muaj qhov zoo rau cov cuab yeej nyuaj, tab sis cov cuab yeej muag muag xws li cov springs xav tau qhov kub thiab txias.
Daim duab 02: Deferentially Tempered Steel
Hauv daim duab saum toj no, ntau yam xim qhia qhov kub thiab txias uas cov hlau tau rhuab. Lub teeb-straw qhia 204 ° C (399 ° F) thiab lub teeb xiav qhia 337 ° C (639 ° F).
Feem ntau, hauv kev lag luam, peb ua cov kauj ruam tempering tom qab quenching. Yog li ntawd, lub workpiece ntawm cov txheej txheem tempering yog cov khoom quenched, thiab peb yuav tsum tau cua sov cov khoom nrog kev tswj rau ib tug tej yam kub uas yog qis dua qhov tseem ceeb ntawm cov khoom. Thaum lub sij hawm cua sov no, cov qauv nplej ntawm cov khoom (ferrite thiab cementite) zoo li hloov mus rau hauv cov qauv austenite. Nws yog ib theem kev daws teeb meem.
Qhov txawv ntawm Quenching thiab Tempering yog dab tsi?
Quenching yog cov txheej txheem ntawm kev ua kom txias sai tom qab kev kho cua sov ntawm lub tshuab ua haujlwm, thaum tempering yog txheej txheem uas muaj kev kho cua sov kom ua rau muaj zog ntawm cov hlau-raws li alloys. Yog li, qhov sib txawv tseem ceeb ntawm quenching thiab tempering yog tias quenching yog qhov txias ceev ntawm lub workpiece, hos tempering yog cua sov kho lub workpiece.
Ntxiv mus, qhov sib txawv ntxiv ntawm quenching thiab tempering yog tias peb ua quenching kom muaj zog tiv thaiv deformation, thaum tempering tuaj yeem tshem tawm qee qhov nyuaj ntawm cov hlau.
Hauv qab infographic qhia ntau qhov tseeb ntawm qhov sib txawv ntawm quenching thiab tempering.
Summary – Quenching vs Tempering
Quenching yog cov txheej txheem ntawm kev ua kom txias sai tom qab kev kho cua sov ntawm lub tshuab ua haujlwm, thaum tempering yog txheej txheem uas muaj kev kho cua sov kom ua rau muaj zog ntawm cov hlau-raws li alloys. Yog li, qhov sib txawv tseem ceeb ntawm quenching thiab tempering yog qhov quenching yog ceev ceev ntawm lub workpiece, whereas tempering yog kub-kho ib workpiece.
