Pub Zam TximHlau muaj peb qhov tseem ceeb ntawm cov khoom tseem ceeb hauv qab kev mob siab.
(1) Cov Qauv Txheej Txheem
Raws li cov hlau loj, cua sov thiab cov yam ntxwv hloov pauv thiab martensite hom, cov khoom seem (muaj tej zaum yuav muaj qhov carpide me ntsis. Ob leeg martensite thiab seem seem neeg nyob hauv lub xeev metrastable nyob rau hauv chav tsev kub, thiab lawv nyiam hloov mus rau lub xeev ruaj khov ntawm Ferric Mass ntxiv rau kev ua kom khov xis.
(2) Cov yam ntxwv tawv
Lub lattice distortion tshwm sim los ntawm carbon atoms yog qhia los ntawm hardness, uas nce nrog supersaturation, lossis cov ntsiab lus carbon. Quenching qauv hardness, siab lub zog, muaj kuab yas, qis nruj.
(3) cov yam ntxwv ntxhov siab
Suav nrog kev ntxhov siab micro thiab macro kev ntxhov siab, muaj feem xyuam rau cov peev txheej ntawm cov roj ntsha ua kom pom kev zoo nkauj, kev tshuaj ntsuam ntawm kev ua haujlwm nruj; Cov tom kawg yog vim qhov kub sib txawv tau tsim nyob rau ntawm qhov chaw hla kev thaum muaj kev ntxhov siab lossis kev ntxhov siab lossis kev ua haujlwm sib xyaw ua ke los tswj hwm. Yog tias cov kev ntxhov siab sab hauv ntawm cov steel tawv tsis tau tshem tawm nyob rau lub sijhawm, nws yuav ua rau muaj kev cuam tshuam ntxiv thiab txawm tawg ntawm qhov chaw.
Txhawm rau kom suav, txawm hais tias qhov kev ua haujlwm siab muaj siab thiab muaj zog, tab sis txoj cai txhos caug, thiab muaj kev ntxhov siab loj sab hauv kev ntxhov siab, yog li nws yuav tsum tau ua kom muaj qhov ua rau muaj kev thov. Feem ntau hais lus, temperkiving cov txheej txheem yog cov txheej txheem ua raws ntawm cov txheej txheem thermal, nws muab cov haujlwm ua haujlwm tom qab kev ua haujlwm.
Tempering yog txheej txheem ntawm cov cua kub hardened hlau rau qee qhov kub hauv qab AC1, khaws nws rau qee lub sijhawm, thiab tom qab ntawd txias nws mus rau chav tsev kub. Nws cov hom phiaj tseem ceeb yog:
(1) tsim kho cov tawv thiab lub zog ntawm cov hlau, txhim kho cov hlau tawv ntawm cov hlau, kom cov workpiece ua tau raws li cov cai tau ua;
(2) Cov qauv ruaj khov, kom cov chaw ua haujlwm nyob rau hauv chav kawm ntawm cov kev thov mus tas li, yog li kom ruaj khov rau cov style thiab loj ntawm lub workpiece;
Qhov quenching sab hauv kev ntxhov siab ntawm kev ua haujlwm tuaj yeem raug txo lossis tshem tawm kom txo tau nws deformation thiab tiv thaiv kev tawg.