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 kev ntxhov siab, thiab txhim kho kev ua haujlwm ntawm cov yeeb nkab hlau hlau. npaj kev kho cua sov thiab kev kho cua sov zaum kawg.
1. Npaj kev kho cua sov
Lub hom phiaj ntawm kev npaj kev kho cua sov yog txhawm rau txhim kho kev ua haujlwm, tshem tawm cov kev ntxhov siab sab hauv, thiab npaj cov ntaub so ntswg zoo kub-theem rau kev kho cua sov zaum kawg.Nws cov thev naus laus zis kho thermal muaj xws li annealing, zoo hluav taws kub, timeliness, thiab kev kho kom zoo.
(1) Kev tiv thaiv thiab hluav taws zoo
Antuction thiab zoo hluav taws yog siv los ntxhib los ntawm kev ua cua 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; Cov pa roj 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 cov hluav taws kub zoo.Qhov kev sib tsoo thiab teeb ci 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 ntxhib manufacturing thiab ua ntej ntxhib ua.
(2) Lub sijhawm ua haujlwm
Lub sijhawm ua haujlwm tsuas yog siv los tshem tawm cov kev ntxhov siab sab hauv uas tsim los ntawm kev tsim khoom ntxhib thiab kev ua haujlwm txhua yam.
Txhawm rau kom tsis txhob muaj kev thauj mus los ntau dhau, rau cov khoom uas muaj qhov tseeb, nws tuaj yeem npaj ib zaug ua ntej kev ua kom zoo dua qub.Txawm li cas los xij, cov khoom uas muaj qhov tseeb siab dua (xws li lub thawv ntawm lub txaj benchmarking, thiab lwm yam) yuav tsum tau teem sijhawm ob zaug lossis ua raws sijhawm. txheej txheem ob zaug los yog 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 processing.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 ntej 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.
2. Kev kho cua sov kawg
Lub hom phiaj ntawm qhov kawg kev kho cua sov yog los txhim kho cov khoom siv xws li hardness, abrasion tsis kam thiab lub zog.
(1) quenching
Lub quenching muaj nto quenching thiab zuag qhia tag nrho quenching.Qhov nto quenching yog dav siv vim deformation, oxidation thiab decarburization, thiab nto quenching kuj muaj qhov zoo ntawm lub zog sab nraud thiab zoo abrasion tsis kam, thaum lub sab hauv tuav zoo toughness thiab muaj zog anti- Impact.In thiaj li yuav txhim kho cov khoom siv ntawm qhov chaw quenching, kev kho cua sov xws li kev kho kom zoo lossis hluav taws zoo yog feem ntau yuav tsum tau ua raws li kev npaj ntawm kev kho cua sov.Cov txheej txheem dav dav yog: pub-forging-forward hluav taws (annealing)-Rough processing -kev kho kom zoo-semi-precision ua-nto quenching-precision ua.
(2) Carburizing quenching
Crystal carburizing quenching yog tsim rau qis-carbon steel thiab qis alloy steel. Ua ntej nce cov ntsiab lus carbon ntawm txheej txheej ntawm qhov chaw. Tom qab quenching, txheej txheej tau txais siab hardness, thiab lub plawv tseem tuav ib tug tej lub zog thiab siab toughness thiab plasticity.Carbilide muab faib mus rau hauv tag nrho cov carburizing thiab lub zos carburizing.Thaum ib lub zos carburization, anti-seepage ntsuas yuav tsum tau noj (tooj liab plating. los yog anti-seepage khoom).Vim carburizing quenching deformation yog loj, thiab qhov tob ntawm carburizing yog feem ntau ntawm 0.5 thiab 2 hli, cov txheej txheem carburizing feem ntau yog teem ntawm semi-essence thiab precision ua.
Nws cov txheej txheem txoj kev yog feem ntau: pub-forging-forward hluav taws-tick, semi-essence ua-carburizing quenching-precision ua.
Tom qab qhov tsis yog-carburizing ib feem ntawm lub hauv paus carburizing ib feem yog nce, cov txheej txheem ntawm cov pa roj carbon ntau yuav tsum tau teem caij thaum cov txheej txheem carburizing tshaj tawm thaum cov txheej txheem carburizing tshaj tawm.
(3) Nitrogen seepage kho
Nitrogen yog ib txoj kev kho rau nitrogen atoms rau hauv cov hlau nto kom tau ib txheej ntawm nitrogen-muaj compound.The nitrogen seepage txheej yuav txhim khu lub hardness, puas kuj, qaug zog thiab corrosionability ntawm qhov chaw ntawm qhov chaw.Vim qhov kub thiab txias. ntawm nitrogen seepage, lub deformation deformation, thiab kuj nyias nitrogen seepage txheej (feem ntau tsis ntau tshaj 0.6 ~ 0.7mm), cov txheej txheem nitrogen seepage yuav tsum tau teem kom ntau li ntau tau. Tsim kom muaj qhov kub siab rov qab los ntawm kev ntxhov siab.
