Thaum peb ua cov khoom siv kho tshuab, vim qhov yuav tsum tau siv tom qab siv, peb yuav tsum tau ua qee qhov kev hloov pauv ntawm cov khoom siv, xws li quenching, annealing, tempering, thiab lwm yam. Hnub no, kuv qhia koj tias dab tsi yog annealing nyob rau hauv cov txheej txheem ntawm cov khoom?
Annealing yog txheej txheem kev kho cua sov hlau uas cov hlau maj mam rhuab mus rau qhov kub thiab txias, khaws cia rau lub sijhawm txaus, thiab tom qab ntawd txias ntawm qhov tsim nyog ceev. Kev kho cua sov yog muab faib ua tiav annealing, tsis tiav annealing thiab kev ntxhov siab annealing. Cov khoom siv hluav taws xob ntawm cov ntaub ntawv annealed tuaj yeem kuaj los ntawm kev ntsuas tensile lossis kev sim hardness. Ntau cov hlau tau muab nkag rau hauv lub xeev annealed tshav kub kho. Kev ntsuas hardness ntawm cov hlau tuaj yeem kuaj los ntawm Rockwell hardness tester los kuaj HRB hardness. Rau cov hlau nyias nyias, steel strips thiab nyias-walled steel kav, nto Rockwell hardness tester tuaj yeem siv los kuaj HRT hardness.
Lub hom phiaj thiab kev siv annealing suav nrog cov ntsiab lus hauv qab no:
① Txhim kho lossis tshem tawm ntau yam kev ua haujlwm tsis zoo thiab cov kev ntxhov siab uas tshwm sim los ntawm cov hlau hauv qhov casting, forging, dov thiab vuam txheej txheem los tiv thaiv deformation thiab tawg ntawm workpieces.
② soften lub workpiece rau txiav ua.
③ Txhim kho cov nplej thiab txhim kho cov qauv txhawm rau txhim kho cov khoom siv ntawm cov khoom ua haujlwm.
④ Npaj cov qauv rau kev kho cua sov zaum kawg (quenching thiab tempering).
