Qhov Sib Txawv ntawm Cov Roj Hmab Ntuj thiab Cov Roj Hmab Ua Los Ntawm Khoom Siv

Cov Ntsiab Lus Tseem Ceeb

• Qhov sib txawv tiag tiag yog qhov rov ua dua, tsis yog chemistry: kev sib kis ntawm cov khoom muag yog8-12 Mooney units rau roj hmab ntuj piv rau 3-5 MU rau SBR, NBR lossis EPDMlos ntawm ib tus neeg muag khoom.
• Lub zog ntsuab txav koj qhov kev teeb tsa txiav los ntawm10-30% ntawm qhov ceev ntawm kev pub misntawm tib lub 0.5 hli gauge, nrog silicone ntawm qhov kawg qeeb.
• Kev tshem tawm cryogenic ntawm-150 degrees Celsiusnpog txhua yam polymer vim tias qhov kev hloov pauv iav tsuas yog khiav ntawm -125 degrees txog -20 degrees, tab sis lub teeb silicone mos mos tawm los nrog lub zog cua xwb.
• Silicone thiab FKM feem ntau xav tau ib200-250 degrees Celsius tom qab kho 4-24 teev; roj hmab ntuj feem ntau ua tiav tom qab nias kho.

Cov lus teb luv luv:Roj hmab ntuj thiab roj hmab tsim sib txawv hauv kev ua tiav ntawm plaub qhov chaw uas raug nqi nyiaj:Kev sib xws ntawm cov khoom xa tuaj, lub zog ntsuab ntawm lub tshuab txiav, hom kev ua tsis tiav ntawm lub tshuab deflashing, thiab seb qhov khoom puas xav tau kev kho thib obCov roj hmab ntuj nthuav dav 8-12 Mooney units ntawm ntau qhov tab sis tuav nws cov duab zoo, yog li kev txiav kam rau ua tuaj yeem khiav dav dua. SBR, NBR, EPDM, FKM thiab silicone tuaj txog ntau dua sib xws tab sis nqa qis dua lub zog ntsuab thiab feem ntau xav tau 200-250 degrees Celsius tom qab kho uas NR yeej tsis thov.

Ib txoj kab ntau lawm tsis poob nyiaj hauv chav kuaj tshuaj lom neeg. Nws poob nyiaj thaum ib daim kab xev ncab hauv qab lub menyuam pub, thaum lub teeb ci ntsa iab tsis tawg, lossis thaum ib pawg kho sai dua 15 feem pua ​​​​​​ntawm qhov kawg. Phau ntawv qhia no ua raws li qhov ntawm cov khoom xa tuaj mus rau kev ntim khoom thiab tsuas yog cim qhov sib txawv uas yuam kom qhov chaw teeb tsa hloov pauv.

Qhov txawv ntawm roj hmab ntuj thiab roj hmab hluavtaws hauv kev tsim khoom yog dab tsi?

Qhov sib txawv uas mus txog hauv pem teb yog qhov rov ua dua tau, tsis yog cov qauv molecular.Cov roj hmab ntuj yog cis-1,4-polyisoprene uas tau los ntawm cov ntoo Hevea thiab muab qib los ntawm cov av, tshauv thiab cov khoom uas yaj tau. Vim tias nws tsis tau tsim los rau lub hom phiaj, koj tau txais txhua yam uas lub caij tsim tawm. Cov roj hmab hluavtaws, raug faib ua pawg hauv qabISO 1629los ntawm tsev neeg, yog polymerised rau ib qho kev qhia tshwj xeeb.

Vim tias ib qho tswv yim raug muab qib thiab lwm qhov tau teev tseg, NR hloov koj qhov chaw thiab roj hmab hluavtaws hloov koj cov lus thov.Qhov kev tsis sib xws ntawd piav qhia txhua qhov sib txawv hauv qab no.

Vim li cas qhov kev sib xws ntawm cov khoom sib txawv thiaj txiav txim siab koj qhov kev kam rau siab?

Vim tias txhua qhov kev txiav uas koj xaiv yog qhov kev xav ntawm viscosity. A CNC roj hmab strip txiav tshuabtuav ntxiv lossis rho tawm 0.1 hli ntawm qhov tseeb pub thiab txiab 0-20 hli tuab ntawm txog li 80 strokes ib feeb, tab sis tsuas yog thaum cov khoom sib xyaw nkag mus rau hauv cov hniav muaj qhov tawv raws li daim ntawv qhia xav.

Cov roj hmab ntuj yuav tsum tau zom ua ntej sib tov, yog li nws tuaj txog koj nrog keeb kwm shear uas txawv ntawm ib qho mus rau ib qho. Hauv cov ntaub ntawv khoom muag ntawm cov neeg siv khoom, cov khoom NR feem ntau kis tau 8-12 Mooney units (ML 1+4 ntawm 100 degrees Celsius) thaum SBR, NBR thiab EPDM kis tau 3-5 MU - cov nqi ib txwm muaj los ntawm peb qhov kev paub.

Ib qho 8-12 MU kis tau yog kwv yees li ntawm 15-20 feem pua ​​​​​​ntawm kev sib hloov hauv cov khoom sib xyaw ua ke, txaus los hloov pauv txoj kev uas ib daim kab txiav noj, nws rov qab mus deb npaum li cas tom qab rab riam, thiab seb lub ntsej muag txiav puas yog plaub fab lossis dua.

Cov lej sib kis yog cov nqi ib txwm muaj los ntawm peb qhov kev paub dhau los, tsis yog cov kev txwv ntawm cov catalog - xyuas lawv nrog koj tus kheej kev tshuaj xyuas tau txais.

Cov Roj Hmab Ntuj thiab Cov Roj Hmab Ua Los Ntawm Khoom Siv Sib Faib Qhov Twg Thaum Tshem Tawm Flash?

Qhov sib cais yog nyob rau hauv qhov ua rau lub flash tsis ua haujlwm, tsis yog ntau npaum li cas ntawm nws muaj.Cov roj hmab ntuj tsim yog elastic thiab rhuav rau hauv cov hlua, SBR thiab NBR flash tawg, thiab silicone flash tsis muaj zog txaus los txhuam tawm.

Txias yog qhov sib npaug thoob ntiaj teb. Kev hloov pauv iav khiav ntawm txog li -125 degrees Celsius rau silicone mus rau -20 degrees Celsius rau FKM, yog li ntawd akua nitrogen cryogenic deflashing tshuabntawm -150 degrees Celsius ua rau lawv tag nrho qis dua qhov brittle point. Peb lub LN2 unit tuav 80 L ntawm cov menyuam (15-20 kg ntawm cov khoom me me) thiab voj voog hauv qab 8 feeb ntawm 20-70 RPM nrog tus nqi dhau siab dua 98 feem pua.

Cryo tseem tsis yog lub neej ntawd. Lub teeb mos mos, tsis tshua muaj zog rhuav tawm los nrog lublub tshuab cua tshuab deflashingntawm kwv yees li 4 kg / feeb ntawm cov xov xwm, vim tiaskoj yuav tsum them rau cov kua nitrogen kom ua haujlwm ib nrab vib nas this uas cua tshuab lawmKhiav ib pawg khoom seem ntawm -80 degrees Celsius ua ntej thiab txo qis 10 degrees ib zaug; qhov chaw sov tshaj plaws uas tseem dhau koj qhov kev qhia txog flash yog qhov uas txuag nitrogen.

Cov Tshuaj Sib Xyaws Puas Xav Tau Lub Voj Voog Kho Thib Ob?

Feem ntau yog, thiab roj hmab ntuj feem ntau tsis yog.Feem ntau NR vulcanisation ua tiav hauv lub tshuab nias. Silicone thiab FKM xav tau kev kho tom qab kom tshem tawm cov volatiles thiab ua tiav crosslinking, lossis qhov nyuaj thiab compression teeb tsa khaws cia tom qab cov khoom raug thawv.

Cov cuab yeej zoo yog ibqhov cub rau cov menyuam yaus rau kev sib xyaw ua ke theem ob, tsis yog nias ib zaug thib ob. Peb cov XCJ-K600 (600 L) thiab XCJ-K900 (900 L) khiav ntawm qhov kub hauv chav mus rau 280 degrees Celsius ntawm lub tshuab cua sov 10.5 kW, txav 3,000 CBM / H ntawm huab cua los ntawm lub nruas octagonal kom txhua qhov chaw pom tib qhov kub, thiab lees txais txhua lub sijhawm kho los ntawm 0 txog 99.99 teev.

Muab daim ntawv qhia ua zaub mov tso rau ntawm daim npav qhia ua zaub mov es tsis txhob muab tso rau hauv tus neeg teb xov tooj lub cim xeeb.Lub sijhawm teev tseg 4 teev uas hloov mus rau 6 teev hloov qhov nyuaj thiab qhov sib zog, thiab muaj kev tiv thaiv ob zaug dhau qhov kub vim tias qhov kho tom qab kub hnyiab FKM dhau qhov rov qab tau.

Kev Ntsws Ua Rau Koj Txoj Kev Ua Siab Ntev Ua Ntej Koj Txiav Dab Tsi Li Cas?

Kev ntsws yog qhov uas ib feem txiav kom raug dhau los ua ib feem tsis yog.Kev kho kom qhuav ntawm 1.5-4 feem pua ​​txhais tau tias qhov ntev ntawm kev txiav yuav tsum tau faib los ntawm ib qho rho tawm tus lej ntsws, tsis yog teeb tsa rau qhov ntev ntawm daim duab kos.ASTM D2000teeb tsa cov chav kawm hardness thiab kam rau ua tab sis tsis yog shrinkage, yog li tus lej yuav tsum los ntawm koj tus kheej qhov kev sim.

Thaum 3 feem pua ​​​​​​ntawm kev ntsws, lub gasket tiav 50.0 hli xav tau 51.5 hli txiav. Teeb 50.0 hli thiab qhov khoom twb yog 1.5 hli undersize ua ntej kev tshuaj xyuas - qhov tsis zoo uas tus neeg teb xov tooj tsis pom thiab tus neeg siv khoom yuav tsis lees txais.

Cov NR txav mus los 1.5-3 feem pua ​​thiab ntsws ntau dua thoob plaws cov noob dua li ntawm nws, vim tias cov saw hlau tig mus rau thaum lub sijhawm milling. Silicone thiab FKM txav mus los 2-4 feem pua ​​thiab teb ntau dua rau qhov kub kho dua li lub sijhawm, yog li tib daim ntawv qhia ua noj ntawm lub tshuab sib txawv tuaj yeem tsaws sab nraud qhov kam rau siab.

Txoj Kev Ntxuav Twg Haum Rau Polymer Twg?

Sib phim qhov ntxuav kom haum rau qhov chaw uas nws nyob, tsis yog haum rau qhov khoom ntawd ua los ntawm.Cov khoom NR tuaj txog nrog cov talc lossis xab npum uas cov khoom siv hluavtaws tsis nqa, thiab NR o tuaj hauv dej thaum silicone tsis ua.

Lubtshuab ntxuav thiab ziab roj hmabXCJ-QXJ 600 siv lub nruas stainless 304 uas muaj txoj kab uas hla 600 hli thiab ntev 1,000 hli, siv tau 15-30 kg ib zaug ntxuav thiab khiav peb pawg ntawm rau theem. Nws siv dej 20 L/min (0.1 tonnes ib zaug ntxuav 6 feeb) thiab 2.5 kWh rau 20 feeb ntxuav thiab ziab ntawm 12 kW / 380 V, nrog rau cov qhov dej uas tig rov qab uas tsis tawm qhov chaw tsis pom kev.

Rau NR, siv qhov ntxuav luv tshaj plaws uas tshem tawm cov tshuaj ntxuav plua plav, vim tias kev muab tso rau hauv dej ntev yuav ua rau qhov khoom o tom qab koj tau kuaj xyuas nws lawm. Rau silicone, theem ntxiv tau txais nws qhov chaw: kev ntxuav tsuas yog dej tawm hauv zaj duab xis uas tom qab ntawd pom tias yog qhov tsis sib txuas ntawm cov kab ntawm cov neeg siv khoom.

Koj Yuav Ua Li Cas Thiaj Rov Tsim Nyog Ib Kab Rau Ib Lub Compound Tshiab?

Rov tsim nyog dua hauv tsib kauj ruam, thiab tsis txhob hla thawj kauj ruam.Feem ntau cov khoom siv hloov pauv tsis ua haujlwm vim tsis muaj cov ntaub ntawv sau tseg, yog li tsis muaj leej twg tuaj yeem ua pov thawj tias muaj dab tsi hloov pauv.

1. Khov cov khoom xa tuaj.Sau Mooney viscosity, hardness, specific gravity thiab tus lej ntawm peb daim ntawv ua ntej kov qhov chaw teeb tsa.
2. Rov txiav thawj tsab xov xwm ntawm peb qhov ceev pub.Khaws qhov qeeb tshaj plaws uas tuav tau kev kam rau siab, vim tias qhov ceev ntxiv ntawm cov khoom siv uas tsis muaj zog ntsuab tsuas yog yuav cov khoom seem xwb.
3. Nrhiav lub qhov rais tawg ntawm cov khoom seem.Pib ntawm -80 degrees Celsius thiab nqis qis 10 degrees kom txog thaum lub teeb tawg es tsis txhob rhuav.
4. Xam dua qhov ntev ntawm qhov txiav los ntawm qhov ntsuas qhov ntsws.Ntsuas tsib feem 24 teev tom qab kho, tsis txhob ntsuas rau hnub ntawd, vim tias feem ntau qhov kev ntsws ua tiav hauv lub qhov rais ntawd.
5. Sau daim ntawv qhia tom qab kho rau tus maub los.Tus nqi nce, qhov kub thiab txias, lub sijhawm tuav thiab tus nqi txias, tag nrho plaub, tsis yog qhov chaw teeb tsa xwb.

Xaus Lus: Koj Yuav Tsum Siv Cov Khoom Siv Twg Los Ua Tus Qauv?

Ua kom cov khoom siv uas koj qhov kev tshuaj xyuas tuaj yeem tswj tau raws li qhov tseeb.Ib qho tshuaj synthetic compound nrog 3 MU ntawm kev sib kis cia koj khiav cov kev kam rau siab dua thiab tsawg dua thawj zaug-tshuaj xyuas, uas muaj nqis ntau dua li ib qho khoom siv lub cev. NR khwv tau nws qhov chaw uas qhov kev ua siab ntev thiab lub zog tsim kua muag tseem ceeb dua li qhov rov ua dua - thiab tom qab ntawd koj yuav kev kam rau siab rov qab nrog kev pub qeeb qeeb thiab kev ntxuav luv dua.

Txawm yog tsev neeg twg koj khiav los xij, qhov chaw teeb tsa nyob hauv lub tshuab, tsis yog nyob hauv polymer. Xa koj cov khoom sib xyaw, ntsuas thiab lub teeb ci thiab peb yuav phim ib qhokev tshem tawm cov teeb meemlos yog txiav qhov teeb tsa rau nws.