Dab tsi yog nyob rau hauv ib tug nyuaj surfacing vuam qws

Nyob rau hauv lub teb ntawm kev tsim khoom lag luam, kev tsim kho, thiab tshuab txij nkawm, thiab tshuab ntau yam yuav tsum tau txais kev ua haujlwm hnyav xws li hnav, thiab kub. Kev daws teeb meem zoo nkauj vuam tau dhau los ua cov kev pabcuam tseem ceeb los txhim kho cov khoom siv ntawm cov khoom siv no, raws li cov khoom siv tseem ceeb ntawm cov thev naus laus zis, ua lub luag haujlwm ntawm IRREplaceable. Txhawm rau kom nkag siab zoo dua qhov kev ua tau zoo thiab kev thov ntawm kev ua kom tawv ntoo vuam vuam, nws yog qhov tseem ceeb los tshawb lawv cov muaj feem sib xyaw.
Ib qho nyuaj surfacing vuam pas nrig yog mas muaj ntawm ob ntu: cov hlau tseem ceeb thiab txheej. Ob yam no ua haujlwm ua ke kom ntseeg tau tias cov pas nrig vuam tuaj yeem tsim lub siab - Performation Hardfacing txheej thaum lub rooj vuam.
Cov xaim hluav taws xob yog tus "caj qaum" ntawm lub zog nyuaj vuam qws. Nws feem ntau yog ua los ntawm high - zoo qis - cov hlau hlau los yog txheej hlau. Cov kev xaiv ntawm cov khoom siv hlau cov khoom siv yog cuam tshuam nrog cov kev xav tau ntawm cov txheej txheem hardfacing. Piv txwv li, qis}- cov xov hlau steel tseem siv nyob rau qee lub sijhawm uas cov kev xav tau rau lub zog thiab hardness tsis kub heev. Lawv muaj cov weldability zoo thiab tuaj yeem muab lub hauv paus ruaj khov rau txheej. Alloy Steel tseem ceeb, ntawm qhov tod tes, muaj qee qhov nyiaj ntawm cov khoom siv chromium, npib tsib xee, thiab molybdenum. Cov ntsiab no tuaj yeem txhim kho lub zog, kev muaj zog, thiab muaj peev xwm kuj cuam tshuam nrog cov khoom siv hauv kev ua kom zoo dua qub ntawm cov hardfacing txheej. Lub taub thiab ntev ntawm cov core xaim kuj tseem tsim raws li cov kev xav tau vuam xav tau. Txawv sib txawv sib piv rau cov vuam sib txawv thiab vuam ceev, uas ncaj qha rau kev tsim thiab qhov zoo ntawm cov hardfacing txheej.
Cov txheej yog "txheej ua haujlwm" ntawm qhov nyuaj surfacing vuam pas nrig, uas yog tusyees coated ntawm saum npoo ntawm cov hlau tseem ceeb. Nws yog qhov sib xyaw muaj ntau cov tshuaj yeeb, thiab txhua qhov sib xyaw muaj nws txoj haujlwm tshwj xeeb. Ib qho ntawm cov khoom tseem ceeb yog cov neeg sawv cev sib piv. Cov no yog cov tshuaj uas tuaj yeem txhim kho cov tshuaj muaj kuab lom thiab kev ua tau zoo ntawm cov khoom siv tawv hardfacing, xws li carbide, chomromium carbide, thiab lwm yam), nitrides, thiab ciam teb. Carbides muaj kev tawv tawv heev thiab hnav tsis kam. Thaum ntxiv rau txheej, lawv tuaj yeem tsim cov theem nyuaj nyob rau hauv lub hardfacing txheej thaum lub sij hawm vuam, ua rau cov hardfacing txheej kom muaj kev tiv thaiv zoo heev rau kev hnav zoo heev. Nitrides thiab borides tseem tuaj yeem txhim kho lub hardness thiab siab {{{{}} kub ua rau cov tawv hardfacing.
Lwm qhov tseem ceeb ntawm cov txheej yog lub slag - Txoj kev ua yeeb yam tus neeg sawv cev. Cov ntaub ntawv xws li Silica, Titanium Dioxide, thiab manganese oxide yog hom sleag - ua cov neeg sawv cev. Thaum lub sij hawm vuam txheej txheem, slag {{- Txoj kev xaiv tus neeg sawv cev ntawm cov txheej kub thiab ua ib txheej ntawm cov pas dej molten. Cov txheej sleag tuaj yeem cais cov molting hlau los ntawm huab cua, tiv thaiv cov hlau molten los ntawm huab cua, yog li ua kom muaj zog ntawm cov tawv tawv ntawm cov hardfacing txheej. Tom qab vuam yog ua tiav, lub SLAG txheej yuav ua kom ruaj khov thiab tuaj yeem tshem tawm yooj yim, tawm hauv lub hardfacing nto.
Tsis tas li ntawd, cov txheej txheej tseem muaj deoxidizer. Cov ntsiab lus xws li manganese thiab silicon feem ntau siv los ua deoxidizers. Thaum lub sij hawm vuam, deoxidizer tuaj yeem cuam tshuam nrog cov oxygen nyob rau hauv lub pas dej molenten los ua oxides, uas nkag rau hauv cov nplais thiab raug tshem tawm. Qhov no zam qhov tsim ntawm oxide suav nrog cov txheej hardfacing, uas pab txhawm rau txhim kho cov txheej txheem kev thiab lub zog ntawm cov hardfacing txheej.
Kuj tseem muaj cov hlua khi hauv txheej. Cov phau ntawv tau siv los khi ntau yam ntawm txheej ua ke thiab ua kom cov txheej ua ke ncaj qha rau saum npoo ntawm cov hlau tseem ceeb. Cov Kev Sib Tw yog sodium silicate thiab potassium silicate. Lawv tuaj yeem ua kom ntseeg tau tias cov txheej tsis poob thaum lub sijhawm thauj mus los, chaw khaws khoom, thiab vuam.
Hauv qee qhov tshwj xeeb nyuaj surfacing vuam pas nrig, lwm yam kev sib ntxiv kuj tseem yuav tau ntxiv raws li cov kev xav tau. Piv txwv li, txhawm rau txhawm rau txhim kho lub hardness liab ntawm lub hardfacing txheej (muaj peev xwm tswj kev nyuaj ntawm qhov kub siab), qee cov av tsis tshua muaj txiaj ntsig yuav raug ntxiv rau cov txheej txheem. Lub ntiaj teb tsis tshua muaj peev xwm ua kom cov nplej zom cov nplej nyuaj ntawm cov khoom siv nyuaj, yog li txhim kho cov txheej txheem nyuaj ntawm cov hardfacing txheej.
Qhov kev faib ua feem thiab hom sib xyaw ua ke nyob rau hauv qhov nyuaj surfacing vuam pas nrig yog nruj me ntsis tsim thiab kho raws li kev xav tau ntawm cov khoom siv nyuaj. Cov xwm txheej sib txawv yuav tsum muaj cov txheej hardfacing nrog cov khoom sib txawv. Piv txwv li, qhov nyuaj surfacing vuam pas nrig siv rau cov hnav rau cov tshuab tsuas yog xav tau, yog li cov ntsiab lus ntawm carbides hauv lawv lub tsho muaj zog yuav muaj siab. Qhov nyuaj surfacing vuam rods siv rau high- cov ntsiab lus kub ua haujlwm yuav tsum tau txhim kho siab- kev ua haujlwm kub yuav nce.
Hauv kev xaus, qhov nyuaj surfacing vuam pas nrig yog cov khoom siv ntse uas muaj ntau yam muaj pes tsawg leeg. Cov xaim tseem ceeb muab cov moj khaum yooj yim thiab qee qhov kev txhawb nqa, nrog rau cov neeg sawv cev sib ntxiv, thiab ua kom zoo nkauj, thiab cov khoom sib ntxiv, thiab cov khoom sib ntxiv, thiab cov khoom siv sib ntxiv, thiab cov khoom sib ntxiv, thiab cov khoom siv sib txuas, thiab cov khoom siv sib txuas, ua kom muaj zog. Nkag siab cov muaj kev sib xyaw ntawm kev tawv ntoo vuam vuam yog qhov tseem ceeb rau kev xaiv thiab siv, zoo li yog ua kom muaj lub neej zoo thiab kev pab cuam ntawm cov hardfacing txheej. Nrog kev txhim kho kev lag luam txuas ntxiv ntawm kev lag luam thev naus laus zis, kev tsim qauv nyuaj ntawm kev ua kom zoo nkauj vuam yuav ua kom tau ntau dua thiab tsom mus ua haujlwm ntau thiab ua haujlwm hnyav.