Lub luag haujlwm ntawm kev kho cua sov sov yog txhawm rau txhim kho cov khoom siv me me ntawm cov ntaub ntawv, tshem tawm cov khoom siv hluav taws xob, tshem tawm cov tshuab sib luag. Raws li cov hom phiaj sib txawv ntawm kev kho cua sov, cov txheej txheem tuaj yeem faib ua ob pawg: preheat kev kho mob thiab kev kho cua sov.
Lub hom phiaj ntawm kev kho preheat ua kom zoo dua qub yog txhim kho kev ua tau zoo, tshem tawm sab hauv kev ntxhov siab thiab npaj ib tus qauv sib cav sib haum xeeb rau kev kho cua sov kawg. Nws cov txheej txheem kho cua sov muaj cov annealing, normalizing, kev laus, quenching thiab tempering thiab lwm yam.
1) annealing thiab normizing
Annaling thiab noralizing yog siv rau cov khoom siv kub-ua haujlwm txhuas. Carbon Steel thiab Alloy Steel nrog cov ntsiab lus carbon cov ntsiab lus ntau dua 0.5% feem ntau analaled nyob rau hauv thiaj li yuav txo lawv hardness thiab yooj yim txiav; Carbon Steel thiab Alloy Steel nrog cov ntsiab lus carbon uas tsawg dua 0.5% yog siv kom tsis txhob muab rab riam thaum lub hardness tsawg dhau. Thiab siv kev kho mob li qub. Annealing thiab noricizing tseem tuaj yeem kho cov noob qoob loo thiab cov qauv coj ua, thiab npaj rau kev kho cua sov tom ntej. Annealing thiab noralizing feem ntau yog npaj tom qab yog cov chaw ua haujlwm thiab ua ntej ntxhib machining.
2) Kev Kho Mob Laus
Kev laus kev kho mob feem ntau yog siv los tshem tawm cov kev ntxhov siab sab hauv tsim tawm hauv kev tsim khoom thiab machining.
Txhawm rau kom tsis txhob muaj tsheb thauj mus los ntau dhau los ua haujlwm, rau ntu nrog kev kho kom txaus, nws yog qhov txaus los npaj ib qho kev laus ua ntej xov. Txawm li cas los xij, rau ntu nrog cov kev xav tau siab xav tau, xws li lub thawv ntawm Jig Boring tshuab, thiab lwm yam lossis ntau lossis ntau hom kev laus yuav tsum tau npaj. Qhov yooj yim feem ntau tsis xav tau kev kho mob laus.
Ntxiv nrog rau castings, rau qee qhov chaw precision nrog kev ua kom zoo, txhawm rau tshem tawm cov kev sim siab sab hauv Rau qee qhov khawb seem, kev kho mob laus yuav tsum tau npaj tom qab cov txheej txheem ncaj.
3) quenching thiab tempering
Quenching thiab tempering hais txog kev kub siab ntsuas kub tom qab quenching. Nws tuaj yeem tau txais ib qho kev sib tw thiab cov qauv txaus siab, uas yog kev npaj rau kev txo kev tawm tsam thaum lub sijhawm quenching thiab nitregling kev kho mob. Yog li ntawd, quenching thiab tempering kuj tseem siv tau yog kev kho preheat.
Vim tias qhov zoo dua cov cuab yeej siv kho tshiab ntawm cov kev ua kom dhau los ntawm cov txheej txheem kev kho cua sov kawg rau qee qhov chaw uas tsis tas yuav ua kom muaj zog thiab hnav tsis kam.
Lub hom phiaj ntawm kev kho cua sov kawg yog txhawm rau txhim kho cov khoom siv cov khoom siv xws li kev ua kom tawv tawv, hnav tsis kam thiab lub zog. Nws cov txheej txheem kev kho cua sov muaj xws li quenching, carburizing thiab quenching, thiab nitrivying kev kho mob.
1) quenching
Quenching tau muab faib ua saum npoo av thiab tag nrho quenching. Ntawm lawv, nto si Quenching yog siv dav vim nws cov kev tawm tsam me me, thiab lub ntsej muag zoo nkauj, thaum tswj hwm kev ua tau zoo sab hauv thiab kev cuam tshuam zoo heev. Txhawm rau txhim kho cov khoom siv tshuab hluav taws xob ntawm cov npoo av, kev kho cua sov xws li quenching thiab kev npau taws lossis kev kho mob ua ntej ua ntej cua sov. Nws txoj kev ua tiav yog: daim pam, kev zam, annealing, ntxhib machining, quenching, semi tiav, nto leenching, xov.
2) carburizing thiab quenching
Carburizing thiab quenching yog kom nce cov ntsiab lus carbon ntawm ib feem ntawm ib feem, thiab tom qab txheej txheem siab, thaum lub zog tseem muaj zog thiab kev nruj thiab muaj zog. Carburizing tau muab faib ua kev sib tsoo ntawm carburizing tag nrho thiab ib nrab carburizing. Thaum ib nrab carburizing yog ua, tiv thaiv cov kev ntsuas yuav tsum tau coj mus rau qhov tsis yog carburizing. Txij li thaum lub carburizing thiab quenching ua rau muaj kev loj hlob loj, thiab lub qhov tob carburizer feem ntau yog ib txwm tau npaj ntawm ib nrab teev thiab xov.
Cov txheej txheem txheej txheem feem ntau: Blanking, Forging, li qub, ntxhib machinishing, carburizing, ua tiav, xovtooj. Thaum tsis muaj carburized ib feem ntawm lub carburizing thiab quenching partists dhau ntawm txheej carburized yuav tsum tau npaj ntau dhau carburizing tom qab carburizing thiab quenching, ua ntej quenching.
3) Nitridoning Kho
Nitriding yog txheej txheem ntawm infiltrating nitrogen atoms rau hauv cov hlau saum npoo av kom tau ib txheej ntawm nitrogen-muaj cov tebchaw. Lub Nitrived txheej tuaj yeem txhim kho lub hardness, hnav tsis kam, nkees muaj zog thiab corrosion tsis kam ntawm qhov chaw ntawm ib feem. Txij li thaum nitrucking kev kho kub yog tsawg, qhov deformation yog me me, thiab cov Nitrived txheej yog nyias, feem ntau tsis muaj ntau tshaj 0.7mm, cov kab ke nitrived yuav tsum tau npaj kom lig li sai tau. Txhawm rau txo cov deformation thaum nitriving, nws feem ntau siv qhov kub kub siab rau kev ntxhov siab nyem.
Edited los ntawm May Jiang los ntawm Mat Alumin
Lub Sijhawm Post: Sep-04-2023
