Yuav ua li cas txheeb xyuas qhov zoo ntawm malleable steel yeeb nkab fittings?

Kev sib xyaw molding siv nyob rau hauv cov kab noj hniav ntau ntawm malleable steel yeeb nkab fittings yog tib yam li cov molding sib xyaw siv hauv cov kab noj hniav casting. Yog li ntawd, qhov kub hloov pauv ntawm cov molding sib tov yog tib yam, thiab qhov txias txias kuj yog tib yam. Yuav kom ntseeg tau tias cov riser solidifies tom qab lub casting, thiaj li yuav xyuas kom meej tias cov riser ntawm lub malleable steel yeeb nkab haum muaj molten hlau los pub lub casting, nws yog tsim nyog los ua kom lub riser muaj ib tug loj txaus loj. Thaj, qhov no tsuas yog ua rau qhov nce ntawm lub qhov rooj lub cev thiab qhov txo qis ntawm cov txheej txheem tawm los.

Lub riser ntawm malleable steel yeeb nkab fittings yog cov qauv tsim tsim nyob rau hauv cov pwm los khaws cov hlau molten, uas yog siv los them nyiaj rau qhov ua tau shrinkage thaum lub sij hawm tsim cov casting, tiv thaiv cov casting los ntawm shrinkage, shrinkage, thiab tso pa tawm, slag. sau, Lub luag hauj lwm ntawm kev qhia filling.

Txhawm rau kom qhov kub thiab txias ntawm cov hlau molten nyob rau hauv lub riser thiab ntev lub sij hawm solidification, tus neeg sawv cev cua sov, tus neeg saib xyuas cov cua sov thiab cov binder tau npaj rau hauv ib qho kev faib ua feem, thiab tom qab ntawd ua rau hauv lub tes tsho cua sov, uas tau muab tso rau ntawm lub riser. casting los txhim kho cov nyhuv pub ntawm riser. Cov riser zoo sib xws yog hu ua "heating riser", hu ua "heating riser". Lub tes tsho cua sov riser muaj qhov zoo tshaj plaws pub noj thiab yooj yim rau kev khiav lag luam, yog li nws yog dav siv nyob rau hauv factories.

Malleable steel yeeb nkab fittings yog cov yeeb nkab fittings ua los ntawm malleable hlau. Txij li cov malleable steel yeeb nkab fittings yog ua los ntawm hlau, lawv nquag xeb thaum raug huab cua. Tshwj xeeb, peb cov yeeb nkab malleable steel fittings yog siv rau kev tiv thaiv hluav taws thiab dej ua haujlwm. Cov yeeb nkab fittings raug rau qhov chaw ntub dej rau lub sijhawm ntev thiab ua rau xeb ntau dua. Yog li ntawd, malleable steel yeeb nkab fittings yuav tsum tau kho nrog anti-xeb kho ntawm nws nto. Kev kho deg los tiv thaiv xeb ntawm malleable steel yeeb nkab fittings feem ntau muab faib ua ob hom: kub-dip galvanizing thiab txias-dip galvanizing. Kub-dip galvanizing yog hais txog ib txoj kev kho galvanizing uas cov yeeb nkab fittings yog immersed nyob rau hauv ib tug zinc tov melted ntawm ib tug kub ntawm 700-800 degrees, thiaj li hais tias lub nto ntawm cov yeeb nkab fittings yog them nrog ib txheej ntawm zinc. Txias galvanizing tseem hu ua electro-galvanizing. Nws lub hauv paus ntsiab lus yog cia siab rau electrophoresis kom hloov thiab xa cov zinc dai ntawm lub anode rau saum npoo ntawm cov yeeb nkab dai ntawm lub cathode, yog li tsim ib txheej zinc txheej nyias.

Txij li thaum malleable steel yeeb nkab fittings txuas nrog xov, nws kuj tseem hu ua xov yeeb nkab fittings (xov yeeb nkab fittings). Txawm li cas los xij, txawm hais tias feem ntau ntawm cov yeeb nkab galvanized xa mus rau malleable steel yeeb nkab fittings, txij li qee qhov welded yeeb nkab fittings los yog lwm yam hlau yeeb nkab fittings kuj galvanized rau saum npoo, nruj me ntsis hais lus, galvanized yeeb nkab fittings tsis sib npaug rau malleable steel yeeb nkab fittings. Tib yam muaj tseeb rau threaded yeeb nkab fittings. Qee cov kav hlau thiab cov kav dej yas kuj tseem txuas nrog cov kav hlau, tab sis lawv cov khoom tsis yog hlau tsis tuaj yeem.