Normalizing yog kev kho cua sov uas txhim kho lub toughness ntawm hlau. Tom qab cua sov cov khoom siv hlau mus rau qhov kub ntawm 30-50 ℃ saum qhov kub ntawm Ac3, tuav lawv rau lub sijhawm thiab cua txias tawm ntawm qhov cub. Lub ntsiab yam ntxwv yog tias qhov txias txias yog sai dua annealing tab sis qis dua quenching. Thaum lub sij hawm normalizing, crystalline nplej ntawm cov hlau tuaj yeem ua kom zoo dua hauv cov txheej txheem txias me ntsis, uas tsis tsuas yog ua tiav lub zog txaus siab, tab sis kuj tseem txhim kho toughness (AKV tus nqi) thiab txo qhov nyiam ntawm cov khoom tawg tom qab normalizing, cov khoom siv kho tshuab dav dav. ntawm qee qhov qis alloy kub dov steel daim hlau, qis alloy steel forgings, thiab castings tuaj yeem txhim kho tau zoo, thiab kev ua haujlwm txiav kuj tuaj yeem txhim kho.
Normalizing yog tsuas yog siv rau steel workpieces. Normalizing thiab annealing ntawm cov hlau dav dav zoo sib xws, tab sis qhov cua txias yog me ntsis siab dua thiab cov microstructure zoo dua. Qee cov hlau uas muaj qhov ntsuas cua txias tsawg heev tuaj yeem hloov cov austenite rau hauv martensite los ntawm cua txias. Qhov kev kho no tsis zoo li qub thiab hu ua cua txias quenching. Ntawm qhov tsis sib xws, qee qhov loj hla ntu ua haujlwm ua los ntawm cov hlau nrog qhov siab dua qhov txias txias tsis tuaj yeem tau txais martensite txawm tias tom qab quenching hauv dej, thiab cov nyhuv quenching yog ze rau normalizing. Lub hardness ntawm steel tom qab normalizing yog siab dua li tom qab annealing. Thaum normalizing, nws tsis yog yuav tsum tau txias lub workpiece nyob rau hauv lub cub tawg zoo li annealing, uas occupies ib tug luv luv rauv lub sij hawm thiab muaj ntau lawm efficiency. Yog li ntawd, nyob rau hauv ntau lawm, normalizing feem ntau yog siv es tsis txhob annealing ntau li ntau tau. Rau cov pa roj carbon tsawg nrog cov ntsiab lus carbon qis dua 0.25%, qhov hardness ua tiav tom qab normalizing yog nruab nrab thiab yooj yim dua rau kev txiav dua annealing. Normalizing feem ntau yog siv rau kev txiav thiab kev npaj ua haujlwm. Rau nruab nrab carbon steel nrog cov ntsiab lus carbon ntawm 0.25-0.5%, normalizing kuj tuaj yeem ua tau raws li qhov yuav tsum tau ua ntawm kev txiav. Rau qhov sib sib zog nqus ua los ntawm cov hlau no, normalizing kuj tuaj yeem siv los ua kev kho cua sov zaum kawg. Normalizing siab carbon cuab yeej steel thiab bearing steel yog tshem tawm network carbides nyob rau hauv cov qauv thiab npaj cov qauv rau periodization annealing.
Kev kho cua sov zaum kawg ntawm cov txheej txheem zoo tib yam, vim qhov zoo ntawm cov khoom siv kho tshuab ntawm lub workpiece tom qab normalizing piv rau lub xeev annealed, tuaj yeem siv los ua cov kev kho cua sov zaum kawg rau qee qhov qauv zoo tib yam uas tsis tshua muaj kev ntxhov siab thiab kev ua haujlwm, kom txo cov txheej txheem. , txuag lub zog, thiab txhim kho kev tsim khoom. Tsis tas li ntawd, rau qee qhov loj lossis nyuaj zoo li qhov, thaum muaj kev pheej hmoo ntawm kev tawg thaum lub sijhawm quenching, normalizing feem ntau tuaj yeem hloov quenching thiab tempering kho raws li kev kho cua sov zaum kawg.
Email:oiltools14@welongpost.com
Grace Ma
Post lub sij hawm: Oct-23-2023
