Cov teeb meem hauv zaj duab xis degassing txheej txheem ntawm lub tshuab nqus tsev kho cua sov yog:

Cov teeb meem hauv zaj duab xis degassing txheej txheem ntawm lub tshuab nqus tsev kho cua sov yog:

(1) Ua tib zoo saib xyuas thaum siv cov khoom siv rau lub tank degassing tom qab cov khoom tiav lawm. Yog hais tias cov resin tau muab tso rau hauv lub tank, los yog tus neeg sawv cev kho tau muab tso rau hauv lub tank degassing, tag nrho cov ntaub ntawv hauv lub tank yuav tsum tau tawm hauv 4 mus rau 6 teev. Txwv tsis pub, ib zaug solidified, nws yuav ua rau loj txim ntawm scrapping lub degassing tank.

Txhawm rau tiv thaiv qhov no los ntawm qhov tshwm sim, cov cuab yeej tau nruab nrog ib qho xwm txheej ceev ceev ntawm qhov tawm valve hauv qab lub tank lub cev kom tso tawm cov khoom hauv lub tank thaum muaj xwm txheej txawv txav. Nyob rau hauv cov xwm txheej hnyav, lub solenoid valve ntawm qhov chaw nres nkoj tawm tuaj yeem raug tshem tawm kom nrawm nrawm ntawm qhov sib tov.

(2) The degassing process should be carried out continuously, to ensure that it can be used at any time, and try to avoid downtime. If the degassed material is shut down for some reason (such as weekends, holidays, or equipment maintenance, etc.), the material must be degassed again before it is put back into service. At this time, the boot sequence is to heat the degassing tank first, and then turn on the vacuum pump when it reaches >45 degree. Thaum lub tshuab nqus tsev kawm ntawv hauv lub tank ncav cuag qhov yuav tsum tau ua, khaws cia rau ob peb feeb, thiab tom qab ntawd tig rau lub tov khoom rau degassing. Lub sijhawm no, lub sijhawm degassing tuaj yeem hloov kho kom haum raws li cov khoom siv thiab qhov ntev ntawm lub sijhawm downtime. Txwv tsis pub, huab cua ntau yuav muab sib xyaw rau hauv cov khoom, uas yuav cuam tshuam rau qhov zoo ntawm casting.

Lub tshuab nqus tsev kub kho cov khoom siv zaj duab xis degassing txheej txheem

Qhov zoo ntawm degassing yuav txiav txim siab npaum li cas ntawm npuas thaum lub sij hawm pouring. Cov npuas tsawg dua, qhov siab dua qhov dej zoo.

Nyias zaj duab xis degassing yog ib txoj kev degassing nrog cov nyhuv zoo tshaj plaws degassing siv dav hauv cov khoom siv casting. Nws nqa cov khoom mus rau lub kaus degassing los ntawm cov ntsia hlau nqa cov cuab yeej, thiab ntws los ntawm lub kaus mus rau ib puag ncig. Lub sijhawm no, cov ntaub ntawv tsim cov txheej txheem nyias nyias ntawm lub kaus saum npoo. Cov pa roj hauv cov khoom yuav tsim cov npuas ntawm lub kaus saum npoo thiab khiav mus rau hauv lub tshuab nqus tsev, thiab muab tso rau ntawm lub tank los ntawm lub tshuab nqus tsev twj. Vim lub muab tub lim sib xyaw rau hauv cov khoom, viscosity yuav nce thiab fluidity yuav tsis zoo. Cov roj sib xyaw hauv cov khoom yog qhov nyuaj rau lim tawm hauv lub sijhawm luv luv, thiab cov roj thiab dej me me yuav yaj rau hauv cov khoom, yog li nws yuav tsum tau ua kom lub sijhawm ntev stirring thiab degassing yog nqa tawm nyob rau hauv thaj tsam ntawm 60 mus rau 65 degree. Feem ntau, degassing yuav tsum tau txuas ntxiv rau tsawg kawg 24 teev, thiaj li tshem tawm cov dej noo thiab roj ntau npaum li sai tau.

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