Lub luag haujlwm ntawm kev kho cua sov yog txhawm rau txhim kho cov khoom siv ntawm cov yeeb nkab steel thiab precision steel kav, tshem tawm cov kev ntxhov siab seem, thiab txhim kho kev ua haujlwm ntawm cov yeeb nkab steel hlau. Raws li cov hom phiaj sib txawv, cov txheej txheem kev kho cua sov tuaj yeem muab faib ua ob pawg: npaj kev kho cua sov thiab kev kho cua sov kawg.
Lub hom phiaj ntawm kev npaj kev kho cua sov yog txhawm rau txhim kho kev ua haujlwm, tshem tawm kev ntxhov siab sab hauv, thiab npaj cov ntaub so ntswg kub-theem zoo rau kev kho cua sov kawg. Nws cov thev naus laus zis thev naus laus zis suav nrog annealing, hluav taws zoo, sijhawm sijhawm, thiab kev hloov kho kom zoo.
(1) Kev tiv thaiv thiab hluav taws zoo
Antuction thiab hluav taws zoo yog siv los ntxhib los ntawm kev ua kom sov. Carbon steel thiab alloy steel nrog cov ntsiab lus carbon ntau dua {{0}}.5%. Txhawm rau txo nws cov hardness thiab txiav yooj yim, kev kho annealing feem ntau yog siv; carbon -muaj cov pa roj carbon steel thiab alloy steel nrog tsawg dua 0.5%, kom tsis txhob muaj riam thaum lub hardness tsawg dhau. Thiab siv kev kho hluav taws zoo. Lub annealing thiab teeb tseem tuaj yeem kho cov nplej thiab sib xyaw ua ke los npaj rau kev kho cua sov yav tom ntej. Antuction thiab hluav taws kub yog feem ntau npaj tom qab kev tsim khoom ntxhib thiab ua ntej ua haujlwm ntxhib.
(2) Lub sijhawm ua haujlwm
Lub sijhawm ua haujlwm feem ntau yog siv los tshem tawm cov kev ntxhov siab sab hauv uas tsim los ntawm kev tsim khoom ntxhib thiab kev siv tshuab ua haujlwm.
Txhawm rau kom tsis txhob muaj kev thauj mus los ntau dhau, rau qhov chaw uas muaj qhov tseeb, nws tuaj yeem npaj ib zaug ua ntej ua kom zoo dua. Txawm li cas los xij, qhov chaw uas muaj qhov raug siab dua (xws li lub thawv ntawm lub txaj benchmarking, thiab lwm yam) yuav tsum tau teem caij ob zaug los yog cov txheej txheem ua raws sijhawm ob zaug lossis ob peb zaug. Tej yam yooj yim feem ntau tsis muaj sij hawm ua.
Ntxiv rau qhov casting, rau qee qhov precision (xws li precision screws) nrog cov tsis zoo rigidity, txhawm rau tshem tawm cov kev ntxhov siab sab hauv tsim hauv kev ua haujlwm, ruaj khov ntawm cov khoom raug, thiab feem ntau npaj ntau lub sijhawm ntawm kev ua haujlwm ntxhib thiab semi- precision ua. Qee qhov axis raug ua tiav, thiab kev ua tiav raws sijhawm yuav tsum tau teem caij tom qab lub tsev kawm ntawv cov txheej txheem ncaj qha.
(3) Restamination
Kev hloov kho kom zoo txhais tau hais tias kev kho kom rov zoo li qub tau ua tiav tom qab quenching. Nws tuaj yeem tau txais cov ntaub ntawv zoo sib xws thiab cov ncauj lus kom ntxaws txog kev rov qab-tsim cov ntaub so ntswg, uas yog npaj rau tom qab nto quenching thiab nitrogen seepage kho. Yog li ntawd, kev kho kom zoo kuj tuaj yeem siv los ua kev npaj kho cua sov.
Vim hais tias cov khoom siv txhua yam ntawm cov khoom yog qhov zoo, qhov chaw uas yuav tsum tau muaj zog hardness thiab puas-resistant qhov chaw kuj tseem siv tau los ua cov txheej txheem thermal kho zaum kawg.
