Xuab zeb casting: Sand casting feem ntau siv hauv kev lag luam valve kuj tuaj yeem muab faib ua ntau hom xuab zeb xws lixuab zeb ntub, xuab zeb qhuav, dej iav xuab zeb thiab furan resin tsis muaj ci xuab zebraws li qhov sib txawv binders.
(1) Ntsuab xuab zeb yog txheej txheem molding txheej txheem uas bentonite yog siv los ua cov ntaub ntawv hauv kev ua haujlwm. Nws cov yam ntxwv yog: cov xuab zeb ua tiav tsis tas yuav qhuav los yog ua tiav kev kho mob tshwj xeeb, cov xuab zeb pwm muaj lub zog ntub dej, thiab cov xuab zeb core thiab plhaub tau zoo dua, uas yooj yim rau kev tu thiab cov xuab zeb poob. Cov molding ntau lawm efficiency yog siab, lub voj voog ntau lawm yog luv, thiab cov khoom siv tus nqi kuj tsawg, uas yog yooj yim rau kev koom ua ke kab ntau lawm. Nws qhov tsis zoo yog: castings yog qhov ua rau muaj qhov tsis xws luag xws li qhov pores, xuab zeb suav nrog, thiab cov xuab zeb nplaum, thiab qhov zoo ntawm castings, tshwj xeeb tshaj yog nyob rau hauv zoo, yog deb ntawm txaus.
(2) Cov xuab zeb qhuav yog cov txheej txheem ua qauv siv cov av nplaum ua cov ntawv khi, thiab me ntsis bentonite tuaj yeem txhim kho nws lub zog ntub dej. Nws cov yam ntxwv yog: cov xuab zeb pwm yuav tsum tau qhuav, muaj huab cua zoo permeability thiab huab cua dispersion, tsis yooj yim los tsim cov teeb meem xws li xuab zeb ntxuav, xuab zeb sticking, thiab pores, thiab sab hauv zoo ntawm casting kuj kuj zoo. Nws qhov tsis zoo yog: cov khoom siv xuab zeb kom qhuav yog xav tau, thiab lub voj voog ntau lawm kuj ntev.
(3) Sodium silicate xuab zeb yog cov txheej txheem molding siv cov iav dej ua cov ntawv khi. Nws cov yam ntxwv yog: iav dej muaj qhov ua haujlwm ntawm tuaj yeem ua kom tawv tau tom qab ntsib CO2, thiab tuaj yeem muaj ntau yam zoo thiab qhov zoo ntawm cov qauv roj hardening thiab cov tub ntxhais ua. Txawm li cas los xij, muaj qhov tsis zoo xws li lub plhaub tsis zoo collapsibility, nyuaj hauv cov xuab zeb tu rau castings, thiab tsawg dua cov xuab zeb siv.
(4) Furan resin tsis muaj ci xuab zeb moulding yog txheej txheem txheej txheem nrog furan resin ua cov ntawv khi. Nyob rau hauv chav tsev kub, cov xuab zeb molding yog kho vim muaj tshuaj lom neeg cov tshuaj tiv thaiv ntawm cov binder nyob rau hauv qhov kev txiav txim ntawm tus neeg sawv cev curing. Nws cov yam ntxwv yog: cov xuab zeb pwm tsis tas yuav qhuav, uas ua rau lub voj voog ntau lawm thiab txuag lub zog. Resin molding xuab zeb yog ib qho yooj yim rau compact thiab muaj zoo collapsibility, thiab molding xuab zeb ntawm castings kuj tau yooj yim ntxuav, qhov seem ntawm qhov tseeb ntawm castings yog siab, thiab cov nto tiav zoo, uas tuaj yeem txhim kho qhov zoo ntawm castings. Nws qhov tsis zoo yog: qhov kev xav tau zoo rau cov xuab zeb nyoos kuj siab, qhov chaw tsim khoom muaj cov ntxhiab tsw me ntsis, thiab tus nqi ntawm cov resin kuj siab. Kev sib xyaw cov txheej txheem ntawm furan resin self-hardening xuab zeb: Resin self-hardening xuab zeb yog nyiam dua los ntawm cov xuab zeb txuas ntxiv, ntxiv cov xuab zeb nyoos, resin, curing agent, thiab lwm yam, thiab sib tov sai. Sib tov thiab siv txhua lub sijhawm. Qhov kev txiav txim ntawm kev ntxiv ntau yam raw khoom thaum sib tov resin xuab zeb yog raws li nram no: thawj xuab zeb + curing agent (p-toluenesulfonic acid aqueous tov) - (120-180S) - cob + silane - (60-90S) - xuab zeb (5) Hom xuab zeb hom Casting txheej txheem: precision casting.
Post lub sij hawm: Aug-17-2022
