Lub kauv steel yeeb nkab muaj lub luag haujlwm tseem ceeb hauv peb lub neej. Cov hauv qab no yog ua raws li cov txheej txheem kev kho cua sov ntawm cov kav hlau kauv los qhia txog qhov tsis xws luag ntawm txhua tus txheej txheem.
(1) Cov teeb meem tshwm sim thaum cua sov.Rau cov txheej txheem cua sov, cov khoom siv cua sov thiab cov cua sov nruab nrab yuav tsum raug xaiv.Qhov no yuav tshwm sim ntawm no tias qhov chaw ntawm qhov chaw yuav raug cuam tshuam los ntawm oxidized cua sov nruab nrab, thiab cov cua kub yuav Tshaj li cov txheej txheem yuav tsum tau ua.The Ao's crystal grains yog tuab heev thiab txawm melted nyob rau hauv lub ntiaj teb siv lead ua, uas yuav cuam tshuam rau cov tsos thiab sab hauv zoo ntawm cov khoom.Yog li ntawd, nyob rau hauv cov txheej txheem tiag tiag, yuav tsum tau coj mus rau hauv tus account qhov tsis xws luag.
(2) Qhov tsis xws luag tsim thaum lub sij hawm quenching lub me me txoj kab uas hla spiral raj.Cov qhov chaw txias tom qab cua sov thiab lub austeniticization kom tau raws li qhov yuav tsum tau cov qauv thiab mechanical zog.Lub sij hawm no, raws li cov ntaub ntawv thiab piv ntawm qhov chaw, koj yuav tsum xaiv qhov zoo tagnrho txias nruab nrab. Qhov nruab nrab cua txias zoo tshaj plaws yog kom txias sai sai ntawm qhov kub thiab txias ntawm qhov kub tsawg (3o{2}} degree C). Feem ntau cov cua txias nruab nrab yog 5% mus rau 10% saline, 5% mus rau 15% alkaline dej, hluavtaws Cov dej txias, dej quenching nitrate txias, alkaline da dej, alkaline da dej, alkaline da dej, dej quenching dej, 5% mus rau 15% alkaline dej, Nitrate da dej, chloride ntsev da dej, thiab lwm yam. , tshwj xeeb tshaj yog rau ntsev, alkaline dej, roj, alkaline da dej, nitrate da dej, chloride ntsev da dej, thiab lwm yam.Yog hais tias muaj teeb meem nrog kev ua tau zoo ntawm cov cua txias nruab nrab, nws yuav txo qis (kev laus), thiab yog tias nws tsis pom nyob rau hauv lub sij hawm. , nws yuav dhau los ua ib qho tseem ceeb ntawm qhov tsis xws luag.Insufficient hardness, soft point, deformation txawv ntawm quenching tawg thiab quenching qhov chaw yog cov thermal kho tsis xws luag.
(3) Cov tsis xws luag yuav tshwm sim thaum lub sij hawm rov qab txheej txheem.Cov khoom quench kom tau high-hardness quenching nees austenitic cov ntaub so ntswg los yog cov ntaub so ntswg qis nrog ib tug me ntsis qis hardness, tab sis cov ntaub so ntswg ntawm lub sij hawm no yog tsis ruaj tsis khov thiab nws brittleness yog siab heev. .Thaum siv hauv kev tsim khoom, nws yuav tsum tau hloov kho kom tau txais cov ntaub so ntswg thiab kev ua tau zoo.Yog li ntawd, cov txheej txheem rov qab yuav muaj qhov cuam tshuam tseem ceeb ntawm kev kho cua sov ntawm cov khoom, xws li hardness, crispness ntawm ignition, ignition tawg thiab lwm yam. qhov tsis xws luag. Kev ntsuas zoo yuav tsum tau ua thaum lub sijhawm rov ua haujlwm kom tsis txhob muaj cov teeb meem saum toj no.
(4) Deg quenching defects yog tag nrho cov kev kho cua sov ntawm qhov chaw, yog li cov sab hauv thiab sab nraud ntawm cov khoom tuaj yeem tau txais qhov yuav tsum tau muaj hardness thiab yuav tsum tau.Qhov kev kho deg quenching tsuas yog siv rau qhov chaw hardening, thiab cov tub ntxhais yog tseem structural ua ntej ua.Yog li ntawd, nto quenching kub, cua sov lub sij hawm, thiab hardening qhov tob yuav cuam tshuam cov cua sov kho ntawm qhov chaw kom deform thiab tawg, hardness theem thiab kev pab cuam lub neej.
(5) Tshuaj kho cua sov tsis xws luag ntawm cov kab me me kauv raj.Cov tshuaj thermal kev kho mob ntawm cov kauv raj yog ua kom cov hlau los yog non-metallic atoms nyob rau saum npoo ntawm ib feem kom tau cov txheej txheem kho cua sov ntawm qhov yuav tsum tau ua hauj lwm nto (xws li raws li siab hnav). Cov txheej txheem no muab cov khoom sib xyaw ua ke dual lub luag haujlwm thiab kev ua haujlwm.Txawm li cas los xij, yog tias cov qauv txheej txheem thiab cov txheej txheem tsis hloov pauv, thiab lwm yam, yuav ua rau cov khoom deformation thiab tawg, cov qauv tsis zoo, tsis tsim nyog hardness, thiab lwm yam. Yog li ntawd, cov khoom siv hluav taws xob ua kom sov, thiab lwm yam. ib feem yuav tsum tau them nyiaj siab rau, txwv tsis pub cov khoom yuav ploj tag nrho qhov tseem ceeb ntawm cov tshuaj thermal kho. Kev kho cua sov ntawm qhov chaw yuav tsum muaj kev nyab xeeb, kev lag luam thiab siv tau, thiab tib lub sijhawm, qhov chaw ua haujlwm txias, huv si thiab ntsiag to yuav tsum tsim.
Cov txheej txheem thermal kho kom raug yog los xyuas kom meej qhov chaw thiab lub hauv paus ntawm qhov zoo ntawm thermal kho ntawm qhov chaw. Thaum pom cov teeb meem zoo saum toj no, lawv tuaj yeem daws tau los ntawm tib neeg, tshuab, cov khoom siv, cov txheej txheem, kev sib txuas, thiab kev tshuaj xyuas.Los ntawm kev tshuaj xyuas thiab kev txiav txim, cov hauv paus ntsiab lus ntawm qhov tsis xws luag tuaj yeem pom.
