Kev xaiv ntawm lub twj tso kua mis lub cev cov ntaub ntawv yuav siv sij hawm mus rau hauv tus account yam xws li lub zog, corrosion kuj, abrasion tsis kam, casting thiab mechanical processing kev ua tau zoo, vuam kho kev ua tau zoo, thiab nqi.
1. Cam khwb cia hlau
Rau feem ntau cov kua conveying daim ntaub ntawv, grey cam khwb cia hlau yog cov khoom zoo dua rau kev tsim cov twj tso kua mis. Rau ib-theem twj tso kua mis, grey cam khwb cia hlau feem ntau muaj lub zog txaus los tiv thaiv lub siab generated. Ductile hlau yog dav siv nyob rau hauv nruab nrab siab thiab kub ntau yam. Hauv cov ntawv thov uas grey cam khwb cia hlau thiab cov hlau tsis tuaj yeem ua tiav kev tiv thaiv corrosion txaus, corrosion-resistant siab nickel cam khwb cia hlau feem ntau yog siv los ua lub twj tso kua mis lub cev. Nyob rau hauv xyoo tas los no, ib hom tshiab ntawm corrosion-resistant siab nickel cam khwb cia hlau cov khoom (lub npe D2W) nrog zoo vuam kev kawm tau tsim, uas muaj ib tug me me ntawm niobium keeb los txhim kho nws vuam kev kawm. Hom austenitic cam khwb cia hlau muaj 15% mus rau 20% npib tsib xee thiab siv dav hauv cov dej ntsev.
Grey cam khwb cia hlau yog hom cam khwb cia hlau feem ntau siv. Feem ntau, lub twj tso kua mis lub cev, impeller, lub twj tso kua mis npog, ncua kev kawm ntawv, thiab lwm yam ntawm cov twj dej huv yog ua los ntawm cov khoom siv no, thiab peb qib feem ntau siv: HT150, HT200, thiab HT250. Rau qhov tsis tseem ceeb xws li lub hauv paus thiab gasket, HT150 feem ntau yog siv, thaum HT200 feem ntau yog siv rau lub twj tso kua mis lub cev, lub twj tso kua mis npog, ncua kev kawm ntawv, thiab lwm yam, thiab HT250 feem ntau yog siv rau impellers, lub qhov ncauj rings, ncej tes tsho, thiab lwm yam. Cov sawv cev ntawm cov hlau grey txawv ntawm cov teb chaws, xws li FC hauv Nyiv, GG hauv Tebchaws Yelemees, thiab Class4 hauv Tebchaws Meskas.
Ductile hlau yog ib hom cam khwb cia hlau uas muaj kev ua tau zoo. Vim nws cov khoom siv hluav taws xob nyob ze rau cov hlau, thiab nws cov khoom siv casting thiab kev ua haujlwm zoo dua rau cov hlau, nws feem ntau yog siv los hloov cov cam khwb cia hlau. Vim muaj kev txwv xws li casting, lub impeller ntawm cov twj tso kua dej tam sim no siv cov khoom siv no, tshwj xeeb tshaj yog cov txiav hom qhib impeller, uas muaj cov nqi zoo tshaj. Txoj kev sawv cev rau cov hlau hlau hauv IN tus qauv yog GGG, thiab cov qauv sawv cev hauv Tebchaws Meskas yog Ductileiron.
2. Cam khwb cia hlau
Rau corrosive thiab teeb meem roj av khoom, los yog thaum lub qhov hluav taws xob siab ntawm ntau theem twj mus txog 13.8 MPa, nws yog tsim nyog los siv cam khwb cia hlau los yog cam khwb cia hlau stainless. Martensitic stainless hlau feem ntau yog siv hauv boiler pub twj thiab ntau daim ntawv thov hydrocarbon. Martensitic stainless hlau muaj cov khoom siv zoo thiab tsim nyog rau cov kev mob siab, tab sis nws cov corrosion kuj tsis zoo li lwm hom stainless hlau. Austenitic stainless hlau (CF-8M, CF-3M, thiab lwm yam) feem ntau yog siv los ua cov twj tso kua mis hauv cov khoom siv tshuaj lom neeg thiab lwm qhov chaw corrosive. Tsis tas li ntawd, austenitic stainless hlau tuaj yeem tiv taus yaig los ntawm kev kub ceev thiab tuaj yeem yooj yim welded thiab kho ntawm qhov chaw. Lub tshuab nqus dej twj tso kua mis siab siab muaj qhov xav tau ntau dua rau kev tiv thaiv corrosion thiab kev ua haujlwm zoo, thiab nws cov twj tso kua mis yog ua los ntawm cov khoom siv stainless hlau duplex (50% ferrite+50% austenite).