Qhov sib txawv tseem ceeb ntawm tempering thiab austempering yog tias tempering yog qhov tseem ceeb hauv kev tshem tawm cov tawv tawv ntau dhau ntawm cov hlau, hos austempering yog qhov tseem ceeb hauv kev txo qis kev cuam tshuam ntawm cov hlau alloys.
Tempering thiab austempering yog cov txheej txheem zoo sib xws uas koom nrog kev kho cua sov ntawm cov hlau alloys, tshwj xeeb yog hlau alloys xws li hlau. Txawm li cas los xij, cov kauj ruam ntawm txhua txoj kev thiab cov txiaj ntsig kawg yog qhov sib txawv ntawm ib leeg.
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 ntsuas kub uas peb yuav ua kom sov cov hlau yog nyob ntawm qhov muaj pes tsawg leeg ntawm cov hlau lossis hlau thiab nws cov khoom. 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 01: Tempering Xim ntawm Hlau
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. Qhov no yog ib theem kev daws teeb meem.
Austempering yog dab tsi?
Austempering yog ib txoj hauv kev uas cov hlau alloy tsim cov khoom siv hlau metallurgical. Daim ntawv thov ntawm cov txheej txheem no tsuas yog nyob rau ntawm ferrous alloys uas muaj cov ntsiab lus nruab nrab mus rau siab carbon. Ntawm no, hlau thiab hlau hlau yog qhov tseem ceeb tshaj plaws ntawm cov alloys. Hauv cov hlau, cov txheej txheem no tsim cov microstructure hu ua "bainite" thaum nyob rau hauv cov hlau ductile nws tsim "ausferrite" microstructure.
Daim duab 02: Lub Sijhawm-Tsub Hloov Hloov Pauv Daim Duab Qhia Cov Cuab Yeej Cuab Yeej rau Austempering xim liab
Feem ntau, peb siv cov txheej txheem no los txo cov kev cuam tshuam ntawm cov hlau, yog li txhim kho cov khoom siv ntawm cov khoom, i.e. peb tuaj yeem ua kom muaj zog, toughness, thiab lwm yam. Nyob rau hauv cov txheej txheem no, peb yuav tsum tau cua sov cov khoom mus rau hardening kub, ces txias nws sai heev rau lub martensite kub. Tom qab ntawd, peb yuav tsum tuav qhov kub ntawm qib no kom lub sijhawm txaus kom tau txais cov qauv bainite.
Qhov txawv ntawm Tempering thiab Austempering yog dab tsi?
Tempering thiab austempering yog qhov tseem ceeb hauv kev txhim kho cov khoom siv ntawm cov hlau alloy, tshwj xeeb yog cov hlau alloys. Qhov sib txawv tseem ceeb ntawm tempering thiab austempering yog tias tempering yog qhov tseem ceeb hauv kev tshem tawm cov hardness ntau dhau ntawm cov hlau, whereas austempering yog qhov tseem ceeb hauv kev txo qis kev cuam tshuam ntawm cov hlau alloys.
Thaum xav txog txoj kev xav ntawm ob txheej txheem no, thaum lub sijhawm kho cua sov ntawm cov txheej txheem tempering, qhov kub thiab txias txiav txim siab qhov hardness peb tuaj yeem tshem tawm ntawm cov hlau. Txawm li cas los xij, nyob rau hauv austempering, tsim ntawm "bainite" qauv lossis "ausferrite" qauv ntxiv dag zog rau cov hlau.
Summary – Tempering vs Autempering
Tempering thiab austempering yog qhov tseem ceeb hauv kev txhim kho cov khoom siv ntawm cov hlau alloy, tshwj xeeb yog cov hlau alloys. Qhov sib txawv tseem ceeb ntawm tempering thiab austempering yog tias tempering yog qhov tseem ceeb hauv kev tshem tawm cov hardness ntau dhau ntawm cov hlau, whereas austempering yog qhov tseem ceeb hauv kev txo qis kev cuam tshuam ntawm cov hlau alloys.
