Khoom npaj
- Refractory Khoom Siv:Cov khoom siv refractory haum yog Quartz xuab zeb, zircon xuab zeb, lossis mullite. Cov khoom xaiv yog xav kom muaj kev sib txawv me me nrog cov tshuaj muaj zog me me kom ua rau muaj kev ntseeg siab nyob rau hauv qhov siab - kub Molten hlau hauv Casting.
Pwm tau ua
- Qauv ua:Tsim theej tawm cov ntawv theej tawm hauv ntoo, yas, lossis hlau ntawm qhov chaw valve. Tus qauv yuav yog qhov seem ntau npaum li daim ntawv luam nrog cov nyiaj pub rau hauv nws uas yuav muaj kev paub hauv solidification.
- plhaub siv tau:Ruav tus qauv nyob rau hauv dej - iav - raws li slurry, ua los ntawm dej - iav thiab cov hmoov kom zoo. Tsho tiv no nrog txheej txheej ntawm cov xuab zeb uas tsis sib xws. Khaws rau txheej nrog dej nrog dej - iav - raws li cov nplais ntawm cov txheej txheem ntawm cov xuab zeb refractory xuab zeb ntau yam kom ua tau ntau - txheej plhaub. Txhua txheej yuav tsum tau tso cai kom qhuav thiab tawv. Tus nqi ntawm cov khaubncaws sab nraud povtseg feem ntau yog nruab nrab ntawm 4 - 8 ua haujlwm ntawm kev tivthaiv thiab kev nyuaj.
Plhaub Hardening
- Tshuaj tawv tawv:Siv tshuaj tawv nqaij tawv xws li sodium silicofluoride lossis ammonium chloride. Cov dej-ua kom muaj zog - lub network gel uas tsim hauv lub xeev ruaj khov ua rau nws nruj dua. Cov cua sov nrog rau lub sijhawm tawv tau txais kev saib xyuas nrog kev saib xyuas. Piv txwv li, ntawm chav tsev kub, {15 - 60 feeb yog lub sijhawm tsim nyog.
- Kom Qhuav:Lub plhaub yog ziab nyob rau hauv qhov cub cua sov (ib txwm 150 - 250} degree) tom qab nws muaj kev cuam tshuam ntau tshaj li kev txhawb nqa hauv lub zog kawg hauv lub plhaub.
Melting thiab pouring
- Hlau melting:Cov khoom siv hlau tsim nyog tau xaiv nyob rau hauv thiaj li yuav npaj cov seem ntawm lub valve, piv txwv li, yog tus bronze, carbon hlau, lossis hlau steel. Cov hlau yog melted nyob rau hauv lub cub tawg ntawm kev kub kub. Cov cua sov rau melting yog nyob ib ncig ntawm 1500 - 1600 degree thaum stainless hlau.
- nchuav:Tom qab cov hlau yog nyob ntawm qhov tsim nyog zoo thiab kub, ncuav nws ua ntej - rhuab plhaub. Lub pouring ceev thiab nchuav kub yuav tsum tau soj ntsuam kom nruj kom tsis txhob muaj qhov tsis xws luag hauv daim ntawv ntawm porosity, txias kaw, nrog rau misruns.
Post - Ua
- Shell tshem tawm:Thaum cov hlau yog tawv thiab txias, tshem tawm cov cam khwb los ntawm nws lub plhaub. Cov kev siv tshuab tuaj yeem siv tau hauv kev twv kom ua qhov ntawd. Cov hau kev no tuaj yeem yog kev co lossis txhaj tshuaj - blasting.
- Xov ua haujlwm xov:Ua tiav kev ua haujlwm ntawm lub pob valve, uas muaj machining, sib tsoo, nrog rau kev kho saum npoo. Cov machining tau ua nyob rau hauv ib qho kev twv kom ua tiav qhov kev kho mob qhov ntev, hos nto tiv zaum los ntawm corrosion nrog rau kev ua kom zoo nkauj.
Cim npe nrov: Dej-iav casting rau valve Cheebtsam, Tuam Tshoj dej-iav casting rau cov khoom siv hluav taws xob, cov chaw muag khoom, Hoobkas