Hardfacing yog ib txoj kev tseem ceeb hauv kev saib xyuas kev lag luam thiab kev tsim khoom, npaj ntawm txhim kho cov hnav, muaj kev puas tsuaj ntawm cov hlau. MIG (hlau inert roj) vuam, nrog nws txoj kev ua tau zoo thiab kev hloov kho hauv cov tawv tawv, thiab cov kev xaiv ntawm cov tawv hlau ncaj qha txiav txim siab qhov kev ua tau zoo ntawm cov tawv hardfaced. Muaj ntau hom xov hlau Mig tshwj xeeb tau tsim tshwj xeeb rau lub hom phiaj no, txhua tus ua kom haum rau kev ua haujlwm sib txawv thiab cov khoom yuav tsum tau ua.
Ib qho ntawm feem ntau siv Mig cov xov hlau rau cov hardfacing yog siab {{chromium hlau {}}}} raws xaim. Hom hlau no muaj feem pua siab ntawm chromium (feem ntau 12-30%), nrog rau cov pa roj carbon thiab lwm yam alloying xws li molybdenum lossis npib tsib xee. Lub siab chromium cov ntsiab lus nyuaj chromium carbides hauv kev tawm tsam cov khoom siv, uas ua rau lawv zoo tagnrho rau cov xuab zeb, gravel, lossis ntxhia pars. Cov ntawv thov suav nrog thoob cov hniav ntawm excavators, conveyor screws, thiab cov ntaub pua plag. Tsis tas li ntawd, siab - chromium hlau {} Raws li cov xov hluav taws xob muaj kev ua haujlwm zoo ntawm kev ua haujlwm me ntsis.
Cobalt - Raws cov xov hlau Mig yog lwm txoj kev hwm hwm rau cov Hardfacing, tshwj xeeb yog nyob rau hauv hardfacing, tshwj xeeb yog} {} Kev ntxhov siab ntxhov siab. Cov xov hlau no, sib txuam nrog chromium, thiab npib tsib xee, tsim kom muaj galling kub) thiab ua kom muaj galling (txhuam {}} ua rau kev puas tsuaj). Lawv feem ntau yog siv nyob rau hauv valve rooj, thiab tshuab ib leeg, thiab kev sib tw tuag tuag uas ua haujlwm ntawm qhov kub thiab txias txog 600℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃(1112℃f). Thaum cobalt - Raws cov xov hlau kim dua, lawv qhov kev ua tau zoo los ua kom zoo dua lawv siv nyob rau hauv cov ntaub ntawv tseem ceeb thiab cov nqi hloov pauv tau siab.
Rau cov ntawv thov uas yuav tsum tau sib npaug ntawm hardness thiab tawv, nickel - Raws li kev xaiv Mig. Cov xov hlau no, feem ntau xyaw nrog chromium, molybdenum, thiab boron, tsim ib txheej nyuaj uas ua ke cov kev hnav tsis kam nrog kev sib txuas. Qhov no ua rau lawv haum rau qhov uas raug ob qho tib si kev puas tsuaj thiab cuam tshuam, xws li twj tso kua mis thiab iav hniav. Nickel {{4 {}}} Raws cov xov hluav taws xob kuj ua rau cov khoom lag luam ua haujlwm lossis cov chaw ua dej ua haujlwm uas raug cov dej noo thiab tshuaj lom neeg muaj cov tshuaj lom neeg.
Mild steel-based MIG wires with carbide additions are a cost-effective alternative for light to moderate wear conditions. Cov hlau no txuas nrog cov carbides lossis chomium carbides rau hauv cov hlau me me, muab cov khoom siv tawv tawv yam tsis muaj kev txi haj yam. Lawv nquag siv nyob rau hauv kev ua liaj ua teb
Hauv cov ntsiab lus, kev xaiv ntawm Mig xaim rau cov kev pabcuam nyuaj, cob qhia cov xov xwm rau cov xaim hluav taws xob, npib siab}} Thiab kev nruj heev, thiab carbide -}}}} Cov xov hlau me me rau tus nqi {}}}}}}}} {rhiab, tswj cov ntawv thov. Los ntawm kev xaiv txoj cai Mig xaim, kev lag luam tuaj yeem txuas ntxiv kav lub neej thiab txo tus nqi kho.
