Lub nplhaib puag ncig thiab nias ntsia hlau ntawm peb Vic Machinery roj xovxwm tshuab yuav tsum tau kho cua sov.
Kev kho cua sov tuaj yeem txhim kho qhov hnav tsis kam ntawm cov khoom, ua kom ntev lub neej ntawm cov khoom, txo qis qis thiab qis qis, thiab cov neeg siv khoom tuaj yeem tsim cov txiaj ntsig zoo dua. Yog li dab tsi yog kev kho cua sov?
Kev ua haujlwm ntawm kev kho cua sov yog txhawm rau txhim kho cov khoom siv kho tshuab ntawm cov ntaub ntawv, tshem tawm cov kev ntxhov siab seem thiab txhim kho cov machinability ntawm cov hlau. Raws li lub hom phiaj sib txawv ntawm kev kho cua sov, cov txheej txheem kho cua sov tuaj yeem muab faib ua ob pawg: kev kho cua sov ua ntej thiab kev kho cua sov kawg.
1. Npaj kev kho cua sov
Lub hom phiaj ntawm kev kho cua sov ua ntej yog txhawm rau txhim kho kev ua haujlwm, tshem tawm kev ntxhov siab sab hauv thiab npaj cov qauv zoo metallographic rau kev kho cua sov zaum kawg. Cov txheej txheem kho cua sov muaj xws li annealing, normalizing, laus, quenching thiab tempering, thiab lwm yam.
(1) Kev kho thiab normalizing
Annealing thiab normalizing yog siv rau ntawm qhov khoob uas tau ua haujlwm kub. Annealing thiab normalizing feem ntau yog npaj tom qab qhov khoob yog tsim thiab ua ntej machining ntxhib.
(2) Kev laus kev kho mob
Kev laus kev kho mob feem ntau yog siv los tshem tawm cov kev ntxhov siab sab hauv tsim thaum lub sijhawm tsim khoom thiab machining.
Rau qhov chaw uas muaj qhov dav dav, nws txaus los npaj kev kho mob ua ntej ua tiav.
(3) Kev kho mob
quenching thiab tempering yog qhov kub-kub tempering kho tom qab quenching. Nws tuaj yeem tau txais cov qauv zoo sib xws thiab zoo tempered sorbite los npaj rau kev txo qis deformation thaum lub sij hawm tom qab nto quenching thiab nitriding kev kho mob. Yog li ntawd, quenching thiab tempering kuj tseem siv tau los ua kev npaj kho cua sov.
2. Kev kho cua sov kawg
Lub hom phiaj ntawm kev kho cua sov zaum kawg yog los txhim kho cov khoom siv kho tshuab xws li hardness, hnav tsis kam thiab lub zog.
(1) Quenching
quenching muaj xws li nto quenching thiab tag nrho quenching. Ntawm lawv, nto quenching yog dav siv vim me me deformation, oxidation thiab decarburization. Nto quenching kuj muaj qhov zoo ntawm lub zog sab nraud thiab zoo hnav tsis kam, thaum tuav zoo sab hauv toughness thiab muaj zog cuam tshuam.
(2) Carburizing thiab quenching
Carburizing thiab quenching yog tsim rau cov pa roj carbon tsawg thiab cov hlau tsis tshua muaj hlau. Nws thawj zaug nce cov ntsiab lus carbon ntawm txheej txheej ntawm qhov chaw. Tom qab quenching, txheej txheej tau siab hardness, thaum lub hauv paus tseem tuav ib tug tej lub zog, siab toughness thiab plasticity.
(3) Kev kho nitriding
Nitriding yog ib txoj kev kho mob uas nitrogen atoms nkag mus rau hauv cov hlau nto kom tau ib txheej ntawm nitrogen-muaj cov tebchaw.
