Raws li ib tug dav siv auxiliary khoom nyob rau hauv casting ntau lawm, daim tawv nqaij khaus tshwm sim los ntawmFoundry Txheej Bindernyob ntawm nws cov khoom raw formulation, khoom purity, tiv tauj lub sij hawm thiab tus neeg mob tej yam kev mob ntawm daim tawv nqaij. Nws yog ib qho qis -kev ua kom khaus kev lag luam uas tsis muaj zog corrosiveness lossis mob toxic stimulation, tab sis nws tsis muaj teeb meem tag nrho. Kev tiv thaiv yuav tsum tau muab coj los siv thaum ua haujlwm niaj hnub. Tam sim no, mainstream Foundry Coating Binders ntawm lub lag luam poob rau hauv ob pawg: inorganic binders nrog rau cov iav dej, silica sol thiab phosphate binders, thiab organic binders xws li acrylic resin, phenolic resin thiab carboxymethyl cellulose binders. Ob pawg no qhia txog qhov sib txawv ntawm daim tawv nqaij cov yam ntxwv.
Inorganic binders xa cov kev nyab xeeb siab dua nrog cov khoom ruaj khov thiab tsis muaj zog corrosivity. luv luv liab qab- tes kov tsuas yog tsim me ntsis ntawm daim tawv nqaij nruj thiab dryness yam tsis muaj mob hnyav xws li stinging lossis liab. Txawm li cas los xij, cov binders no tsim ib zaj duab xis tawv ntawm daim tawv nqaij tom qab cua- ziab, thaiv daim tawv nqaij pores. Yog tias tso tseg tsis huv rau lub sijhawm ntev, lawv ua rau lub cev qhuav dej thiab tev, tshwj xeeb tshaj yog nyob rau lub caij nplooj zeeg qhuav thiab lub caij ntuj no. Organic resin-raws li binders muaj cov seem monomers, organic solvents thiab curing additives, uas ua rau muaj kev kub ntxhov ntau dua. Cov neeg ua haujlwm yuav hnov tsis muaj qhov tsis xis nyob thaum pib kev sib cuag, tseem tau rov ua dua ntev - lub sijhawm raug cuam tshuam tsis tu ncua erodes stratum corneum thiab ua rau cov tawv nqaij ua haujlwm tsis zoo.
Qhov hnyav ntawm kev khaus khaus txawv heev raws li cov tawv nqaij mob. Kev noj qab haus huv, tsis zoo ntawm daim tawv nqaij muaj kev tiv thaiv txhim khu kev qha. Tsis muaj qhov tshwm sim tsis zoo tshwm sim yog tias muaj kev sib kis los ntawm luv luv, txwv kev sib cuag raug ntxuav tam sim ntawd. Hauv qhov sib piv, thaum txhais tes lossis caj npab muaj qhov txhab, tawg, eczema lossis lwm qhov chaw puas, cov khoom xyaw binder nkag mus rau cov txheej txheem ntawm daim tawv nqaij thiab ua rau stinging, hlawv, liab thiab lwm yam tsos mob. Lub caij no, cov neeg uas muaj kev tsis haum tshuaj yuav tsim muaj kev tsis haum tshuaj xws li khaus, pob khaus thiab o hauv zos thaum raug cov resins lossis cov khoom ntxiv.
Lub sijhawm ntev - kev sib cuag me me feem ntau raug saib xyuas ntawm cov chaw tsim khoom. Ntau tus neeg ua haujlwm ntseeg tias tsis muaj qhov mob tam sim ntawd txhais tau tias cov cuab yeej tiv thaiv tsis tsim nyog. Kev ua haujlwm tsis tu ncua- tes ua haujlwm ua rau tawv nqaij tawv, tev thiab tawv nqaij cuticles, ua rau muaj kev ua haujlwm xerosis. Tsis tas li ntawd, thaum sib xyaw rau hauv cov txheej txheej txheej, Foundry Txheej Binder yog ua ke nrog cov hmoov refractory thiab cov neeg ua haujlwm tshem tawm. Qhov sib tov no muaj zog adhesion thiab yog ib qho nyuaj rau ntxuav, thiab residual Cheebtsam tsis tu ncua irritate daim tawv nqaij. Cov txheej txheem tuav tau raws li hauv qab no: yaug cov tawv nqaij kom huv si nrog dej thiab xab npum tam sim ntawd tom qab kis tau. Siv cov nplaum nplaum nplaum los kho lub cuticle yog tias liab thiab khaus tshwm sim. Nrhiav kev kho mob sai sai thaum muaj kev tsis haum tshuaj loj. Zuag qhia tag nrho, cov ntaub ntawv no ua rau tsis muaj qhov mob hnyav heev thiab feem ntau ua rau mob me me, uas tuaj yeem zam dhau los ntawm cov txheej txheem kev ua haujlwm.
