Kev piav qhia ntxaws ntawm cov hmoov hlau txhaj tshuaj molding tshuab

Ua ntej tshaj plaws, cov hmoov hlau txhaj tshuaj molding yog sib tov cov hmoov hmoov thiab cov organic sib txuas sib npaug. Tom qab cov khoom ua los ntawm cov cua sov thiab cov yas yas, lub tshuab tsim yog siv los txhaj rau hauv pwm kab noj hniav. Tus neeg sawv cev sib txuas tau raug tshem tawm, thiab cov khoom kawg tau txais los ntawm sintering degradation.

Cov txheej txheem ntawm kev hla cov roj hauv cov hmoov hlau txhaj tshuaj yog: kub decomposition, cov kuab tshuaj, catalytic lub cev qhuav dej, thiab lwm yam. Ntawm lawv, qhov loj ntawm cov khoom tsim tom qab catalytic tso tseg yog siab, thiab peb lub tuam txhab siv catalytic skimming.

Ua ib qho polydehyde (POM) nplaum ua piv txwv, cov txheej txheem sedimentation tau muab faib ua peb theem: pem hauv ntej yaug, tso tseg thiab rov qab yaug.

Ua ntej yaug theem: Vim tias cov khoom ua kom lub cev qhuav dej ntawm cov hmoov hlau txhaj tshuaj ntawm cov embryos raw yuav hnov ​​​​mob nrog cov pa oxygen, huab cua hauv cov kab noj hniav yuav tsum tau diluted ua ntej tso tseg, kom cov ntsiab lus hauv cov pa oxygen tuaj yeem ncav cuag qhov kev nyab xeeb. Nyob rau hauv pem hauv ntej flushing theem, lub cub tawg kab noj hniav, flue thiab nitrogen kav yuav tsum tau ua, thiab lub cub tawg kiv cua yuav pib nyob rau tib lub sij hawm thauj nitrogen mus rau lub cub tawg.

Tshem tawm theem: Nws yog hais txog cov txheej txheem ntawm decomposing cov nplaum (polydehyde) rau hauv formaldehyde nyob rau hauv qhov chaw kub ntawm qhov kub thiab txias. Lub cub tawg yog nyob rau hauv preservation lub xeev, lub twj tso kua mis nitric acid pib, thiab nitric acid yog txhaj rau hauv lub cub tawg. Hauv cov huab cua acidic, qhov decomposition teb tus nqi ntawm polydehyde yog nrawm.

Lub sijhawm so: Tom qab lub sijhawm tso tseg lawm, nitrogen pib ua rau lub qhov cub tawg, thiab tso tawm cov formaldehyde thiab nitric acid uas tsim los ntawm lub cev qhuav dej hauv qhov cub. Formaldehyde thiab nitric acid yuav muab tso rau hauv lub raj. Thaum kawg, tsuas yog carbon dioxide, dej vapor thiab nitric oxide gases raug tshem tawm sab nraud. Cov no yog cov roj uas ua rau huab cua, uas ua tau raws li kev tiv thaiv ib puag ncig.

Cov hmoov hlau uas muaj cov txheej txheem catalytic tsis ua haujlwm yog txhaj rau hauv cov embryonic lub cev qhuav dej txog li 90 feem pua ​​​​thiab hloov mus ua tshauv. Cov theem tom ntej yog nkag mus rau qhov cub sintering rau sintering.