Nqus roj hmab: piav qhia thiab duab

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Nqus roj hmab niaj hnub no tuaj yeem siv los tsim ntau cov hlua, hoses lossis cov raj, uas muaj ntau yam kev siv hauv ntau qhov chaw thiab rau ntau lub hom phiaj. Cov khoom no yog dab tsi thiab nws siv qhov twg? Koj yuav kawm txog qhov no los ntawm peb tsab xov xwm.

Tech phaj

Cov ntawv roj hmab tuaj yeem yog ob hom - zoo li tus thiab tsis zoo li. Ib qho ntawm cov khoom siv no tuaj yeem siv los ua lwm yam khoom los ntawm cov khoom siv tib yam. Lub tshuab nqus tsev roj hmab tuaj yeem siv los ua cov khoom xws li cov ntsaws ruaj ruaj rau ntau qhov sib txuas ruaj khov, gaskets uas pab tshem tawm kev sib txhuam ntawm txhua yam khoom txav. Tsis tas li ntawd, tib yam khoom siv roj hmab tuaj yeem siv los txo qhov kev co uas tshwm sim thaum lub sijhawm ua haujlwm ntawm qee qhov kev siv tshuab.

Nqus roj hmab, tsim nyob rau hauv daim ntawv ntawm cov txheej txheem, muaj xws li zoo li tsis muaj porosity thiab shrinkage ntawm cov khoom, nws yog ua tau zoo, yog li nws yog heev yooj yim mus txiav los yog txiav cov khoom. Nco ntsoov tias lub neej ua haujlwm ntawm cov phiaj xwm no ntev heev, txawm tiasntawm cov xwm txheej raws li cov roj hmab siv.

Nqus daim hlau

Kev tsim cov pa roj hmab li no yog tswj los ntawm TU 38-105116-81. Cov khoom uas tshwm sim yog siv los kaw cov pob qij txha ruaj khov hauv ntau chav nyob uas ua haujlwm hauv lub tshuab nqus tsev. Lub tshuab nqus tsev vacuum nyob rau hauv cov ntaub ntawv no yog siv nyob rau hauv thiaj li yuav tshem tawm tau depressurization ntawm cov khoom siv. Nws tseem yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias lub thickness ntawm cov khoom sealing tuaj yeem yog los ntawm 1 mus rau 10 hli. Cov pa hluav taws xob ua haujlwm yog tsim ua dawb. Kev xa khoom ntawm cov khoom no yog nqa tawm hauv cov yob nrog qhov dav ntawm 900 hli thiab tuab ntawm 1 txog 6 hli. Yog hais tias lub thickness ntawm cov khoom yuav tsum yog los ntawm 8 mus rau 10 mm, ces nyob rau hauv cov ntaub ntawv no cov roj hmab daim hlau muab, uas yog ua nyob rau hauv daim ntawv ntawm ib tug square ntawm 500 x 500 mm. Qhov kub ntawm cov khoom siv no tuaj yeem siv nyab xeeb yog nruab nrab ntawm +8 txog +70 degrees Celsius.

Hes

Kev siv lub tshuab nqus tsev vacuum lossis hose yog tam sim no ntau heev. Cov ntsiab lus zoo li no yog siv txhawm rau txhawm rau txuas cov twj tso kua mis foreline. Cov qauv tshiab kuj tseem siv dav hauv cov xwm txheej uas yuav tsum tau nqa tawm nrog cov kav dej txuas ntxiv.

Nqus roj hmab hoses tuaj yeem siv los nqus cov pa tawm hauv chav. Txawm li cas los xij, nws yuav tsum tau hais tias cov khoom ntawm hom no tsis yog siv hauv cov tshuab nqus tsev siab. Kev siv cov qauv PVC tsuas yog ua tiavnyob rau hauv cov tshuab nrog kev ua haujlwm siab. Tsis tas li ntawd, nws yuav tsum raug coj mus rau hauv tus account tias, thaum siv, lub twj tso kua mis yuav tsum muab cov txheej txheem siv tau. Yog tias qhov kev xav tau no tsis raug soj ntsuam, nws yuav tshwm sim tias kev tawm ntawm tus kheej yuav cuam tshuam rau lub tshuab nqus tsev.

Tim hose

Nws yog ib qho tseem ceeb kom paub tias muaj ntau hom lub tshuab nqus tsev vacuum. Cov qauv nrov tshaj plaws yog suav hais tias yog ib qho ntawm cov ntsia hlau clamp fais fab qauv, uas yog ua los ntawm cov hlau galvanized. Lub hom phiaj ntawm cov khoom siv no yog txhawm rau txuas lub hose nyob rau hauv qhov kev tshwm sim uas ib puag ncig yog tus cwj pwm los ntawm kev nce rigidity. Nws kuj yog ib qho kev siv cov hose no:

• silicone nqus tsev;
• reinforced nqus;
• siab-nqus;
• spiral nqus tsev;
• steel nqus tsev vacuum.

Nws tseem tsim nyog sau cia lwm qhov tshwj xeeb ntawm cov khoom zoo li no - lub pob tshab ntawm cov phab ntsa ntawm PVC raj. Qhov no feature yog yooj yim heev thiab yog siv los saib xyuas ntau yam tsub zuj zuj nyob rau hauv lub hose, uas tej zaum yuav tshwm sim nyob rau hauv tus txheej txheem ntawm cov kab mob. Ib qho tshwm sim zoo sib xws tuaj yeem pom tau thaum cov txheej txheem nqus dej yog nqa tawm hauv lub tshuab nqus tsev los ntawm nws sab hauv.

Nqus Cord

Lub hom phiaj tseem ceeb tshaj plaws rau lub tshuab nqus tsev vacuum yog nws siv rau hauv lub tshuab nqus tsev. Nyob rau hauv xws li system, nws yog ua los ntawm sealant. Cov hlua no tuaj yeem siv rauambient kub tsis ntau tshaj +70 degrees Celsius. Nws tseem ceeb heev kom nkag siab tias kev siv cov gaskets tsis tuaj yeem ua tau ntev. Tsis tas li ntawd, qhov kub ntawm qhov chaw ua haujlwm yuav tsum tsis txhob ntau tshaj +90 degrees.

Muaj ntau hom roj hmab cords:

• rectangular nqus tsev;
• foob hose los ntawm SKF 26;
• TU 38 105108 76.

GOST lub tshuab nqus tsev vacuum

GOST 7338-90 siv rau vulcanized thiab roj hmab-woven daim hlau, uas yog cov khoom siv rau kev tsim cov khoom siv roj hmab. Lawv yog siv los ua cov ntsaws ruaj ruaj rau cov pob qij txha ruaj ruaj kom tsis txhob muaj kev sib txhuam ntawm ob lossis ntau qhov hlau. Cov ntsaws ruaj ruaj no kuj siv tau ua ib qho kev poob siab absorbers los yog gaskets.

Cov yam ntxwv ntawm lub tshuab nqus tsev vacuum, uas siv rau nws raws li qhov yuav tsum tau ua ntawm GOST, yog raws li hauv qab no:

• Daim phiaj yuav tsum tau ua raws li qhov yuav tsum tau ua ntawm GOST, nrog rau tsuas yog raws li cov ntaub ntawv pov thawj thev naus laus zis thiab cov qauv roj hmab.
• Cov roj hmab nqus cov paib yuav tsum tau ua nyob rau hauv ntau hom, nyob ntawm seb lawv tsim, lub hom phiaj, nrog rau cov qauv ntawm lawv cov khoom. Raws li cov kev txwv no, ntau qib ntawm cov khoom sib txawv: TMKShch - tshav kub thiab te acid thiab alkali resistant, AMS - atmospheric roj resistant roj hmab, MBS - roj thiab petrol resistant nqus roj hmab.

Tsuasmuab cov khoom faib rau hauv cov qib sib txawv, muaj kev faib ua cov chav kawm. Tam sim no, tsuas muaj ob chav kawm rau lub tshuab nqus tsev vacuum.

chav kawm thiab hom khoom raws li GOST

Thawj chav kawm ntawm cov roj hmab suav nrog cov phaj, lub thickness ntawm 1 txog 20 hli. Lawv tau npaj rau kev tsim cov khoom siv roj hmab uas tuaj yeem siv los ua cov ntsaws ruaj ruaj rau cov chaw ua haujlwm hauv siab tshaj 0.1 MPa.

chav kawm thib ob yog cov roj hmab nrog cov khoom tuab ntawm 1 txog 60 hli, uas, zoo li yav dhau los, yog siv los tsim cov khoom siv roj hmab. Txawm li cas los xij, cov khoom tsim los ntawm cov roj hmab hauv chav kawm no tsuas yog siv los kaw cov chav tsev uas yuav ua haujlwm hauv siab tsis siab tshaj 0.1 MPa. Los ntawm hom, muaj cov duab puab thiab tsis zoo li daim hlau.

Nqus silicone roj hmab

Kev tsim cov roj hmab silicone yog ua los ntawm cov roj silicone nrog cov viscosity siab, nrog rau cov khoom siv tsis muaj roj thiab cov organic peroxide, uas ua raws li tus neeg sawv cev vulcanizing. Silicone roj hmab tau pom nws daim ntawv thov txawm nyob rau hauv electron optics thiab microscopy.

Dhau li ntawm no, silicone roj hmab muaj lwm lub npe - silopran. Cov khoom no yog siv hauv tshuab nqus tsev siab. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov roj hmab silicone tsis tuaj yeem hloov tau raws li cov roj hmab li niaj zaus, tab sis qhov no tau them rau qee yam. Qhov tseeb hais tias nws muaj peev xwm tiv taus kub txog +150 degrees Celsius. Tsis tas li ntawd, cov khoom siv tiv taus lub sijhawm luv luv kub hloov mus txog +260 degrees. Nws yog ib qho tseem ceeb kom nco ntsoov tias qee hom roj hmab silicone ua nkig heev thaum txias rau -60 txog -90 degrees.