Umahluko phakathi kweRubber yendalo kunye neSynthetic Rubber Processing

Izinto ezibalulekileyo ekufuneka ziqwalaselwe

• Umsantsa wokwenyani kukuphindaphindeka, hayi ikhemistri: ukusasazeka kwezintoIiyunithi zeMooney eziyi-8-12 zerabha yendalo xa kuthelekiswa ne-3-5 MU ze-SBR, NBR okanye i-EPDMevela kumthengisi omnye.
• Amandla aluhlaza ashukumisa ukuseta kwakho kokusika ngeI-10-30 ekhulwini yesantya sokutyakwigeyiji efanayo ye-0.5 mm, kunye ne-silicone kwisiphelo esicothayo.
• Ukucoca i-cryogenic kwi-150 degrees CelsiusIgubungela yonke i-polymer eqhelekileyo kuba utshintsho lweglasi luqala kuphela kwiidigri ezingama--125 ukuya kwi--20, kodwa i-flash ye-silicone ethambileyo iphuma ngamandla omoya kuphela.
• I-Silicone kunye ne-FKM zihlala zifuna i-Ama-200-250 degrees Celsius emva kokuphiliswa kweeyure ezi-4-24; irabha yendalo idla ngokugqitywa emva kokucocwa ngepress.

Impendulo emfutshane:Irabha yendalo kunye nerabha yokwenziwa zahlukile ekucutshungulweni kwiindawo ezine ezibiza imali eninzi:ukuhambelana kwebhetshi xa izinto zingena, amandla aluhlaza xa kusikwa, imo yokusilela kwefleshi kwiyunithi yokukhuhla, kunye nokuba inxalenye ifuna unyango lwesibini naIrabha yendalo isasaza iiyunithi zeMooney ezisi-8-12 phakathi kweendawo kodwa igcina imilo yayo kakuhle, ngoko ke ukunyamezelana kokusika kunokusebenza ngokubanzi. I-SBR, i-NBR, i-EPDM, i-FKM kunye ne-silicone zifika zifana ngakumbi kodwa zinamandla aphantsi aluhlaza kwaye zihlala zifuna ama-degrees Celsius angama-200-250 emva konyango olungazange lucelwe yi-NR.

Umgca wemveliso awulahlekelwa yimali kwilebhu yekhemistri. Ulahlekelwa yimali xa umcu unwebeka phantsi kwerola yokuphakela, xa iinyembezi zikhawuleza endaweni yokuqhekeka, okanye xa ibhetshi iphiliswa nge-15 ekhulwini ngokukhawuleza kuneyokugqibela. Esi sikhokelo silandela inxalenye ukusuka ekungeneni kwempahla ukuya ekupakisheni kwaye siphawula kuphela umahluko onyanzela useto ukuba lutshintshe.

Yintoni Eyahluke Ngakumbi Phakathi Kwerabha Yendalo Neyokwenziwa Kwimveliso?

Umahluko ofikelela kumgangatho wevenkile kukuphindaphindeka, kungekhona ulwakhiwo lweemolekyuli.Irabha yendalo i-cis-1,4-polyisoprene ecofwe kwimithi yeHevea kwaye ilinganiswa ngothuli, uthuthu kunye nomxholo oguquguqukayo. Ngenxa yokuba ayenzelwanga injongo ethile, ufumana nantoni na eveliswa ngexesha lonyaka. Irabha yokwenziwa, ehlelwe phantsiI-ISO 1629lusapho, lupholishwa ngokweemfuno ezithile.

Ngenxa yokuba enye ingeniso ibekwe kwinqanaba kwaye enye ichaziwe, i-NR itshintsha useto lwakho kwaye irabha yokwenziwa itshintsha izizathu zakho.Loo mahluko angalinganiyo achaza yonke into eyenzeka apha ngezantsi.

Kutheni iBatch Consistency ikhetha ukunyamezela kwakho?

Kuba yonke iparameter yokusika oyidayelayo ngokwenene yingqikelelo ye-viscosity. A Umatshini wokusika umtya werabha we-CNCibamba okanye inciphise ukuchaneka kokutya okungu-0.1 mm kwaye icheba ubukhulu obuyi-0-20 mm ukuya kuthi ga kwiistroke ezingama-80 ngomzuzu, kodwa kuphela xa i-compound engena kwi-blade inokuqina okufana neresiphi.

Irabha yendalo kufuneka ihlanjwe ngaphambi kokuba ixutywe, ukuze ifikelele kuwe ithwele imbali yokucheba eyahluka kakhulu kwinani. Kwiingxelo zeempahla zabathengi, ii-NR lots zihlala zisasaza iiyunithi zeMooney eziyi-8-12 (ML 1+4 kwi-100 degrees Celsius) ngelixa ii-SBR, NBR kunye ne-EPDM lots zisasaza i-MU eziyi-3-5 — ixabiso eliqhelekileyo kumava ethu.

Ukusasazeka kwe-MU ye-8-12 kumalunga ne-15-20% yokuqina okudibeneyo, ngokwaneleyo ukutshintsha indlela umcu otya ngayo, ukuba ubuyela umva kangakanani emva kwencakuba, kunye nokuba ubuso obusikiweyo buyisikwere okanye bukrazukile.

Amanani asasazekileyo ngamaxabiso aqhelekileyo kumava ethu, hayi imida yekhathalogu — wajonge xa ​​uwajonga ngokwakho.

Irabha yendalo neyenziweyo ihlukana phi xa kususwa iFlash?

Ukwahlukana kukwindlela i-flash engasebenzi ngayo, kungekhona ukuba ingakanani na.I-flash yerabha yendalo iyanwebeka kwaye ikrazula ibe yimicu, i-SBR kunye ne-NBR flash ziyaqhekeka, kwaye i-silicone flash ibuthathaka ngokwaneleyo ukuba ingasuswa.

Ukubanda kukulinganisa okuqhelekileyo. Utshintsho lweglasi luqala malunga ne--125 degrees Celsius kwi-silicone ukuya kwi--20 degrees Celsius kwi-FKM, ngoko ke i-umatshini wokucoca i-nitrogen engamanzikwi--150 degrees Celsius zonke zibeka ngaphantsi kwe-brittle point. Iyunithi yethu ye-LN2 ibamba i-80 L ye-roller volume (15-20 kg yeenxalenye ezincinci) kwaye ijikeleza ngaphantsi kwemizuzu esi-8 kwi-20-70 RPM kunye nesantya sokupasa esingaphezulu kwe-98%.

I-Cryo ayikabi yiyo eqhelekileyo. I-flash ethambileyo, enamandla aphantsi okukrazula iphuma ne-umatshini wokukhupha umoya ngamandla omoya osebenzisa umoyamalunga ne-4 kg/min yemidiya, kubaUkuba bekungenjalo ubuya kuhlawula i-nitrogen engamanzi ukuze wenze umsebenzi, ukuqhuma komoya kwesiqingatha sesibini sele kugqityiwe.. Sebenzisa i-batch ye-scrap kwi--80 degrees Celsius kuqala uze wehlise i-10 degrees ngexesha; indawo efudumeleyo kakhulu esadlula iinkcukacha zakho ze-flash yile igcina i-nitrogen.

Ngaba iiCompounds zokwenziwa zifuna umjikelo wesibini wokunyanga?

Ngokwesiqhelo ewe, kwaye irabha yendalo idla ngokuba hayi.I-NR vulcanisation idla ngokugqitywa ngaphakathi kwi-press. I-Silicone kunye ne-FKM zifuna unyango emva kokususwa kwezinto eziguquguqukayo kunye nokudibanisa ngokupheleleyo, okanye ubunzima kunye neseti yoxinzelelo ziyaqhubeka zishukuma emva kokuba iindawo zifakwe ebhokisini.

Isixhobo esifanelekileyoi-oven ejikelezayo yokuvuselela i-vulcanization yesibini, hayi ukucinezela okwesibini. Iiyunithi zethu ze-XCJ-K600 (600 L) kunye ne-XCJ-K900 (900 L) zisebenza ukusuka kubushushu begumbi ukuya kuma-280 degrees Celsius kwi-heater ye-10.5 kW, zihambisa umoya oyi-3,000 CBM/H ngedrama ene-octagonal ukuze yonke indawo ibone ubushushu obufanayo, kwaye yamkele naliphi na ixesha lokuphiliswa ukusuka kwiiyure eziyi-0 ukuya kweziyi-99.99.

Beka i-post-cure kwikhadi leresiphi endaweni yokuyibeka kwimemori yomntu oyisebenzisayo.Ifestile eqhelekileyo yeeyure ezi-4 etshintsha ukuya kwiiyure ezi-6 itshintsha ubulukhuni kunye neseti yokucinezelwa, kwaye kukho ukhuseleko oluphindwe kabini kubushushu obuphezulu kuba i-FKM engapheliyo emva kokuphiliswa iyatshisa i-FKM ngaphaya kokubuyiselwa.

Ukuncipha Kuphula Njani Ukunyamezela Kwakho Ngaphambi Kokuba Unqumle Nantoni Na?

Ukushwabana kulapho inxalenye esikwe ngokuchanekileyo iba yinxalenye engalunganga.Ukuncipha kombala okucociweyo kwe-1.5-4 ekhulwini kuthetha ukuba ubude bokusika kufuneka bahlulwe ngesinye kususwe umfanekiso wokuncipha, bungamiselwanga kumlinganiselo womzobo.I-ASTM D2000ibeka ubulukhuni kunye neeklasi zokunyamezelana kodwa hayi ukuncipha, ngoko ke inani kufuneka livele kwisilingo sakho.

Xa incipha nge-3%, i-gasket egqityiweyo eyi-50.0 mm idinga ukunqunyulwa kwe-51.5 mm. Iseti ye-50.0 mm kwaye inxalenye sele ingaphantsi kwe-1.5 mm ngaphambi kokuhlolwa — isiphene umqhubi angenakusibona kwaye umthengi akayi kusamkela.

I-NR ishukuma nge-1.5-3% kwaye iyancipha kakhulu kwingqolowa kunakwicala layo, kuba iitsheyini zijongeka ngexesha lokusila. I-Silicone kunye ne-FKM zihamba nge-2-4% kwaye zisabela ngakumbi kubushushu obuqhelekileyo kunexesha, ngoko ke iresiphi efanayo kwi-press eyahlukileyo inokuwela ngaphandle kokunyamezela.

Yeyiphi Indlela Yokucoca Ehambelana Neyiphi I-Polymer?

Hlanganisa iwashi nento ephethe umphezulu, hayi into eyenziwe ngayo loo ndawo.Iinxalenye ze-NR zifika zigcwele i-talc okanye i-soapstone ezingathwalwa ziindawo zokwenziwa, kwaye i-NR idumba emanzini ngelixa i-silicone ingadumbi.

Iumatshini wokucoca nowomisa irabhaI-XCJ-QXJ 600 isebenzisa idrama engenasici engama-304 enobubanzi obuyi-600 mm kunye nobude obuyi-1,000 mm, ithatha i-15-30 kg ngomthwalo ngamnye kwaye isebenzisa amaqela amathathu anezigaba ezintandathu. Isebenzisa i-20 L/min yamanzi (iitoni eziyi-0.1 ngokuhlamba kwemizuzu emi-6) kunye ne-2.5 kWh kwimizuzu engama-20 yokucoca nokomisa kwi-12 kW / 380 V, kunye neempumlo ezijikelezayo ezingashiyi ndawo ingabonakaliyo.

Kwi-NR, sebenzisa ukuhlamba okufutshane okususa uthuli, kuba ukuntywiliselwa ixesha elide kuyayidumba indawo emva kokuba sele uyihlolile. Kwi-silicone, inqanaba lokongeza lifumana indawo yalo: ukuhlamba ngamanzi kuphela kushiya ifilimu eya kuthi kamva ibonakale njengokusilela kokubopha kumgca womthengi.

Uwufanelekela njani kwakhona umgca weCompound entsha?

Phinda ufaneleke ngamanyathelo amahlanu, kwaye ungalitsibi elokuqala.Uninzi lweeswitshi zezinto ezingasebenziyo ziyasilela kuba akukho siseko sirekhodiweyo, ngoko ke akukho mntu unokungqina ukuba yintoni etshintshileyo.

1. Faka i-spec engenayo efrijini.Bhala phantsi uburhabaxa bukaMooney, ubulukhuni, ubunzima obuthile kunye nenani leqashiso kwiindawo ezintathu ngaphambi kokuba uchukumise indawo.
2. Sika kwakhona into yokuqala ngesantya esithathu sokutya.Gcina eyona icothayo ikwaziyo ukumelana nayo, kuba isantya esongezelelweyo kwikhompawundi eluhlaza kancinci sithenga kuphela izinto ezilahliweyo.
3. Fumana ifestile ebuthathaka kwi-scrap.Qala kwi--80 degrees Celsius uze wehle nge-10 degrees de kuqhambuke ukukhanya endaweni yokukrazuka.
4. Bala kwakhona ubude bokusika ukusuka ekuncipheni okulinganisiweyo.Linganisa iinxalenye ezintlanu emva kweeyure ezingama-24 emva kokunyanga, ungalibali ngosuku, kuba uninzi lokuncipha luphelela kuloo festile.
5. Bhala iresiphi emva konyango oluvela kwisilawuli.Izinga lokuhamba, ubushushu bokugcina, ixesha lokubamba kunye nezinga lokuphola, zonke ezine, kungekuphela nje indawo ebekiweyo.

Isiphelo: Ngowuphi umxholo ofanele uwulinganisele?

Yenza izinto ezisemgangathweni nezinokulawulwa luhlolo lwakho.Ikhompawundi eyenziweyo ene-3 MU yokusasazeka ikuvumela ukuba usebenze ngokunyamezelana okuqinileyo kunye nokuhlolwa okuncinci kwenqaku lokuqala, okuxabisa ngaphezu kwayo nayiphi na into ebonakalayo. I-NR ifumana indawo yayo apho ukuqina kunye namandla okukrazula kubaluleke ngaphezu kokuphinda-phinda - uze emva koko uthenge ukunyamezelana ngesantya esicothayo sokutya kunye nokuhlamba okufutshane.

Nokuba yeyiphi na intsapho oyisebenzisayo, useto luhlala kumatshini, kungekhona kwi-polymer. Thumela i-compound yakho, i-gauge kunye ne-flash specifications kwaye siya kudibanisaukukhupha umoyaokanye ukusika ukuseta kuyo.