Casting txheej txheem ntawm lub cev valve thiab nws qhov zoo thiab qhov tsis zoo

Lub casting ntawm lub cev valve yog ib feem tseem ceeb ntawm cov txheej txheem valve, thiab qhov zoo ntawm valve casting txiav txim siab qhov zoo ntawm valve. Cov hauv qab no qhia ntau txoj hauv kev hauv kev lag luam valve:

Sand casting:

Sand pwm casting feem ntau siv hauv kev lag luam valve tuaj yeem muab faib ua cov xuab zeb ntub, xuab zeb qhuav, sodium silicate xuab zeb thiab furan resin nws tus kheej hardening xuab zeb raws li cov sib txawv binders.

(1) Ntsuab xuab zeb yog txheej txheem molding nrog bentonite li binder.

Nws cov yam ntxwv yog: cov xuab zeb pwm tsis tas yuav qhuav, tsis tas yuav tsum tau hardened, cov xuab zeb pwm muaj ib tug tej yam ntub lub zog, cov xuab zeb core thiab plhaub muaj zoo resilience, uas yog yooj yim rau tu ntawm casting. High efficiency ntawm molding ntau lawm, luv luv lub voj voog, cov khoom siv qis, yooj yim los npaj cov kab ntau lawm.

Nws qhov tsis zoo yog: lub casting yog ib qho yooj yim los tsim qhov tsis xws luag xws li porosity, xuab zeb suav nrog cov xuab zeb, thiab qhov zoo ntawm cov casting, tshwj xeeb tshaj yog nyob rau hauv zoo, tsis zoo tagnrho.

Qhov piv thiab cov khoom ntawm ntsuab xuab zeb rau steel castings yog raws li nram no:

(2) Qhuav molding xuab zeb yog txheej txheem molding nrog av nplaum li binder. Ntxiv 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, nws muaj huab cua permeability zoo, nws tsis yooj yim los tsim cov kev tsis xws li xuab zeb ntxuav, xuab zeb nplaum thiab cua qhov, thiab qhov zoo ntawm casting yog zoo.

Nws qhov tsis zoo yog:qhov xav tau rau cov khoom siv xuab zeb kom qhuav, lub voj voog ntau lawm ntev.