Casting txheej yog cov khoom siv pabcuam coated rau saum npoo ntawm cov pwm lossis cov tub ntxhais, uas ua lub luag haujlwm tseem ceeb hauv kev txhim kho qhov zoo ntawm cov castings. Tuam Tshoj tus kws tshaj lij casting thaum ntxov, ntau tshaj 3000 xyoo dhau los, tau npaj thiab ua tiav siv cov txheej txheem casting, ua rau muaj txiaj ntsig zoo rau kev tsim cov tshuab casting.
Nrog rau kev tsim khoom thiab thev naus laus zis, cov kev xav tau rau kev ua haujlwm zoo tau nce zuj zus ib hnub. Txhawm rau txhim kho cov kev sib tw ntawm lawv cov khoom, ntau lub tuam txhab tau mob siab rau lawv tus kheej rau kev tshawb fawb ntawm cov coatings hauv kev pom ntawm cov teeb meem hauv kev tsim khoom.
Hauv qab no, luv luv hais txog cov txheej txheem casting ntawm ntau yam teeb meem.
Ua ntej, cov ntsiab lus thiab lub zog ntawm cov txheej txheem
Tam sim no, cov txheej txheem siv rau resin bonded xuab zeb yuav tsum muaj cov ntsiab lus siab thiab lub zog siab, uas yog vim yog ob qho kev xav.
1. Ua raws li cov yam ntxwv ntawm cov xuab zeb pwm
Yav dhau los, av nplaum xuab zeb ntub xuab zeb hom tsis pleev xim, xim tsuas yog siv rau cov av nplaum xuab zeb qhuav. Vim lub zog ntawm cov av nplaum xuab zeb qhuav yog tsawg heev, thiab ua kom cov castings yog ib qho tseem ceeb los yog loj castings, qhov yuav tsum tau ntawm txheej tsis tsuas yog tsim cov txheej txheem cais, thiab nws yuav tsum tau infiltration casting txheej txheej hauv qab no, qhov zoo tshaj plaws. Kev koom nrog 3 ~ 4 xuab zeb, ua rau cov pwm saum npoo yog txhim kho, yog li ntawd, viscosity ntawm cov xim tsis tuaj yeem siab dhau, cov ntsiab lus ntawm cov khoom tsis siab dhau.
2. Xav txog kev txuag hluav taws xob, kev tiv thaiv ib puag ncig thiab txo cov nqi tsim khoom
Cov khoom siv ua kua siv hauv cov txheej txheem, feem ntau yog dej thiab cawv. 20 centuries 70 ~ 80 lub sij hawm, tau siv tsis tas yuav qhuav los yog ignite, muaj peev xwm volatilize chlorine tiam hydrocarbons, xws li dichloromethane, raws li cov cab kuj ntawm cov xim. Vim nws toxicity, nws tsis zoo cuam tshuam rau ib puag ncig raws li nws evaporates rau hauv cov huab cua, thiab nws cov nqi siab, nws yog tam sim no loj heev tsis siv.
Qhov thib ob, cov khoom siv raw siv rau txheej
Muaj ntau ntau yam ntawm raw cov ntaub ntawv siv nyob rau hauv casting txheej, thiab lawv yuav tsum supplemented tas li nyob rau hauv lub hauv paus ntawm kev loj hlob ntawm cov ntaub ntawv kev lag luam.
1. refractory aggregate
Refractory aggregate yog cov khoom tseem ceeb hauv txheej, thiab nws qhov zoo thiab kev xaiv muaj kev cuam tshuam zoo rau kev siv cov txheej txheem. Nyob rau tib lub sijhawm, thaum xaiv cov khoom sib sau ua ke, peb kuj yuav tsum ua kom muaj kev ntsuam xyuas ntau dua hauv kev nyiam huv thiab kev lag luam.
2. cov cab kuj,
Cov cab kuj tseem ceeb siv hauv cov txheej txheej yog dej, cawv thiab chlorinated hydrocarbons. Tam sim no, vim yog kev txiav txim siab ntawm tus nqi thiab ib puag ncig, feem ntau siv rau chlorine hydrocarbon raws li tus neeg nqa khoom ntawm txheej, qhov dav dav yog dej raws txheej thiab cawv raws txheej.
Post lub sij hawm: Jan-10-2022