Lub ntsiab sib txawv ntawm annealing thiab normalizing:
1. Qhov cua txias ntawm normalizing yog me ntsis sai dua li ntawm annealing, thiab cov degree ntawm supercooling yog loj dua.
2. Cov qauv tau txais tom qab normalizing kuj zoo, thiab lub zog thiab hardness yog siab dua li ntawm annealing.
Kev xaiv ntawm annealing thiab normalizing:
1. Rau cov pa roj carbon tsawg seamless steel kav uas muaj cov ntsiab lus carbon tsawg dua 0.25 feem pua, normalizing feem ntau yog siv los ntawm annealing. Vim tias cov cua txias ceev tuaj yeem tiv thaiv cov yeeb nkab uas tsis muaj cov pa roj carbon seamless los ntawm nag lossis daus ntawm dawb tertiary cementite raws li cov ciam teb, yog li txhim kho qhov txias deformation ntawm cov khoom stamping; normalizing tuaj yeem txhim kho qhov hardness ntawm cov hlau thiab kev ua haujlwm ntawm cov pa roj carbon tsawg seamless steel yeeb nkab. ; Thaum tsis muaj lwm txoj kev kho cua sov, normalizing tuaj yeem ua kom cov nplej thiab txhim kho lub zog ntawm cov pa roj carbon tsawg seamless steel kav.
2. Qhov nruab nrab carbon txias-draw seamless steel yeeb nkab nrog cov ntsiab lus carbon ntawm 0.25 feem pua thiab 0.5 feem pua tseem tuaj yeem ua kom zoo li qub tsis yog annealing. Txawm hais tias qhov nruab nrab-carbon steel txias-draw seamless steel yeeb nkab nrog cov ntsiab lus ntawm cov pa roj carbon monoxide nyob ze rau sab sauv muaj zog hardness tom qab normalizing, nws tseem tuaj yeem txiav, thiab tus nqi normalizing tsawg thiab cov khoom tsim tau siab.
3. Cold-drawn seamless steel kav nrog cov ntsiab lus carbon ntawm 0.5 thiab 0.75 feem pua, vim muaj cov ntsiab lus carbon siab, qhov hardness tom qab normalizing yog ho siab dua li ntawm annealing, thiab Nws yog ib qho nyuaj rau kev txiav ua, yog li ua tiav annealing feem ntau yog siv los txo Hardness thiab txhim kho machinability.
4. Cov pa roj carbon siab lossis cov cuab yeej hlau nrog cov ntsiab lus carbon> 0.75 feem pua ntawm cov yeeb nkab txias seamless steel feem ntau siv spheroidizing annealing raws li kev kho cua sov ua ntej. Yog hais tias muaj ib tug meshed secondary cementite, nws yuav tsum tau normalized ua ntej. Annealing yog txheej txheem kev kho cua sov uas cov yeeb nkab txias uas tsis muaj seamless steel yog rhuab mus rau qhov kub thiab txias, khaws cia rau qee lub sijhawm, thiab tom qab ntawd maj mam txias. Kev txias qeeb yog lub ntsiab feature ntawm annealing. Annealed txias-draw seamless steel kav feem ntau txias kom qis dua 550 degree nrog rau qhov cub thiab cua txias. Annealing yog siv dav siv los kho cua sov. Nyob rau hauv cov txheej txheem ntawm kev tsim cov cuab yeej, pwm lossis cov khoom siv tshuab, thiab lwm yam, nws yog feem ntau npaj raws li kev kho cua sov ua ntej tom qab casting, forging thiab vuam, thiab ua ntej txiav (rough) ua kom tshem tawm qee qhov teeb meem los ntawm cov txheej txheem dhau los. tsis xws luag, thiab npaj rau kev ua haujlwm tom ntej.
