I-Roller Oven Yokwelapha Irabha: Amathiphu Okulawula Izinga Lokushisa

By UMike Chen, Umqondisi Wokukhiqiza | Iminyaka eyi-12+ Ekukhiqizeni Irabha |I-LinkedIn

Izinto Ezibalulekile Okufanele Uzicabangele

• Ukulawulwa kokushisa kwe-PID kugcina izinga lokushisa kwehhavini eliqiniswayo lingaphakathi kuka-±1-2°C wephuzu elibekiwe, okubaluleke kakhulu ekuqineni okufanayo kwe-cross-link kuzo zonke izingxenye eqenjini.
• Ama-oven ajikelezayo anezigubhu ezilinganayo afinyelela ukufana kwezinga lokushisa okungcono kunama-oven angaguquki ngoba ukujikeleza okuqhubekayo kuveza zonke izingxenye zomoya oshisayo ojikelezayo.
• Isilawuli se-Omron PID esinomphumela we-SSR ongu-4-20 mA sivimbela ukuqhuma ngokweqile kwe-heater ngokushintsha amandla ngokuqhubekayo kunokushintsha i-heater ivule futhi ivale.
• Izinhlelo zokuvikela amazinga okushisa aphindwe kabili kuma-oven anamuhla okushisa ama-roller ziyayivala ngokuzenzakalelayo i-heater uma isilawuli esiyinhloko sihluleka, okuvimbela umlilo kanye nomonakalo womkhiqizo.

I-oven egoqekayo yokulungisa irabha isebenza ngendlela ehlukile kunemishini yokucindezela i-vulcanization eyinhloko. I-vulcanization yesibili - ebizwa nangokuthi i-post-curing - iqeda inqubo yokuxhumanisa eqala ekucindezelweni noma ekufakweni kwe-injection. Ngenxa yokuthi izakhiwo zomzimba zamakhemikhali erabha ziyaqhubeka nokukhula ngesikhathi se-vulcanization yesibili, ukulawulwa kokushisa okuqhubekayo ku-oven elungisayo kuthinta ngqo ikhwalithi yomkhiqizo wokugcina.

Lesi sihloko sihlanganisa izinhlelo zokulawula izinga lokushisa ezisetshenziswa kuma-oven ajikelezayo ukuze kulungiswe irabha, amathiphu awusizo okugcina ukushisa okufanayo, kanye nendlela yokuthuthukisa amapharamitha enqubo yamakhemikhali erabha ahlukene kanye nosayizi weqoqo.

Kungani Ukulawulwa Kwezinga Lokushisa Kuhhavini Lokuphulukisa Irabha Kuthinta Ikhwalithi Yomkhiqizo

Ukulungisa irabha kulandela ubudlelwano besikhathi nokushisa obuchazwa yi-cure curve yenhlanganisela. Ngokukhuphuka ngakunye kwe-10°C ekushiseni kokushisa, izinga lokusabela cishe liphindwe kabili. Ukwehluka kwezinga lokushisa okungu-5°C kuphela phakathi kwezingxenye kungadala umehluko olinganiswayo emandleni okudonsa, ukunwebeka ngesikhathi sokuphumula, kanye nokucindezelwa okubekwe ngaphakathi komjikelezo ofanayo wokukhiqiza.

NgokweI-ASTM D573futhiI-ISO 188Izindinganiso zokuguga kokushisa kwerabha, ubudlelwano phakathi kokushisa nokushintsha kwesakhiwo bubikezelwa lapho izinga lokushisa lilawulwa ngokunembile. Imikhiqizo elashwe ekugcineni okuphansi kobubanzi bemininingwane ingase ibe nokuxhumanisa okungaphelele, okuholela ekushintsheni okuphansi kanye nesethi yokucindezela ephezulu. Imikhiqizo ekugcineni okuphezulu ingase iphole ngokweqile, ibe buthakathaka ngokuncipha kobude. I-oven ejikelezayo yokwelapha irabha ngokulawula izinga lokushisa okunembile isusa lokhu kushintshashintsha kwe-batch-to-batch kanye ne-part-to-part.

Ekuhlolweni kwethu kwefektri kuma-batch angaphezu kuka-200 e-vulcanization secondary besebenzisa i-XCJ-K600 roller oven, sibonile ukuthi izingxenye ezipholiswe ngokushisa okulawulwa yi-PID ngaphakathi kuka-±1.5°C wephuzu elibekiwe zibonise ukwehluka okuphansi ngo-23% ku-Shore A hardness uma kuqhathaniswa nezingxenye ezipholiswe kuma-oven anokushintshashintsha kwezinga lokushisa kuka-±5°C.

Izinhlelo Zokulawula Izinga Lokushisa Kuhhavini Ojikelezayo Zokwelapha Irabha

Ama-oven esimanje ajikelezayo okulungisa irabha ahlanganisa izinhlelo ezintathu zokulawula ezisebenza ndawonye ukuze kugcinwe izimo zokucubungula ezihambisanayo.

Isilawuli se-PID esinomphumela we-SSR

Isilawuli sokushisa se-Omron PID kuma-oven e-roller e-XCJ-K600 kanye ne-XCJ-K900 sisebenzisa i-algorithm ehambisanayo-ehlanganisiwe-evelayo ukuze siqhubeke nokubala amandla e-heater adingekayo. Isignali yokuphuma engu-4-20 mA iqhuba i-relay yesimo esiqinile (SSR) elawula amandla e-heater ngokuqhubekayo kunokuba iqhubekisele phambili i-heater ivule futhi ivale. Le modi yokulawula eqhubekayo isusa ukushuba kwezinga lokushisa kanye nokushuba okungaphansi okwenzeka ngama-thermostat alula avuliwe. Umphumela uba izinga lokushisa legumbi elizinzile elinokunemba okungu-±1-2°C ezindaweni ezibekiwe phakathi kokushisa kwegumbi kanye no-260°C.

Uhlelo lokujikeleza komoya oshisayo

Injini yomshini omude oshisa kakhulu oshayela ifeni ye-turbine ikhiqiza ukujikeleza komoya okungu-3000 CBM/h. Ngenxa yokuthi umoya oshisayo uhamba njalo nge-drum engu-octagonal kanye nangaphezu kwezingxenye zerabha eziwela phansi, yonke ingxenye ithola ukuvezwa kokushisa okufanayo. Lokhu kujikeleza kuvimbela ukwakheka kwezindawo ezishisayo eduze kwama-heater kanye nezindawo ezibandayo eduze komnyango noma emakhoneni. Ukufakwa kokushisa kokotini kasawoti okungu-100 mm kugcina izinga lokushisa lodonga langaphandle lingaphansi kuka-35°C ngesikhathi sokusebenza okungu-200°C, kunciphisa ukulahleka kokushisa futhi kuthuthukise ukuzinza kokushisa.

Ukujikeleza kwedrama eli-octagonal ukuze kutholakale ukushisa okufanayo

Umklamo wesigubhu esinezinhlangothi ezine ufeza injongo ekabili: ujikeleza izingxenye zerabha ngomfudlana womoya oshisayo, kanti izindonga zangaphakathi ezinezinhlangothi zakha ama-engeli ahlukahlukene okuwa avimbela izingxenye ukuthi zingazaleli ndawonye. Inqwaba yezingxenye ezimile ibamba ukushisa phakathi nendawo, idala umehluko wesilinganiso sokuqina phakathi kwezingxenye zangaphandle nezangaphakathi. Isigubhu esijikelezayo siqeda lokhu kuhlukaniswa, kanti injini ye-roller (0.75 kW) igcina isivinini sokujikeleza esihambisanayo kungakhathaliseki ukuthi umthwalo we-batch ungakanani.

Amathiphu Okulawula Izinga Lokushisa Lokusebenza Kwe-Oven Yokuphulukisa Irabha

1. Setha amapharamitha e-PID ngokusekelwe kusisindo se-batch.Ibhetshi elingama-50 kg limunca ukushisa okwengeziwe ngesikhathi sokuqala kokufudumeza kunebhetshi elingama-15 kg. Lungisa ibhendi elinganayo nesikhathi esihlanganisiwe kusilawuli se-Omron PID ukuze ubheke umehluko wesisindo sokushisa. Qala ngamapharamitha azenzakalelayo omenzi bese ulungisa kahle ngokusekelwe esikhathini sokubuyisa izinga lokushisa ngemva kokulayisha.
2. Shisa i-oven ejikelezayo kuze kube yilapho ibekwe khona ngaphambi kokulayisha.Ukulayisha izingxenye zerabha kuhhavini ongakafiki ekulinganisweni kokushisa kubangela ukuthi izinga lokushisa legumbi lehle ngaphansi kwephuzu elibekiwe. Isilawuli se-PID sizophendula, kodwa isikhathi sokululama sincike emandleni esifudumezi (10.5 kW ku-XCJ-K600) kanye nobunzima bomthwalo obandayo. Vumela imizuzu eyi-15-20 yokuzinza ngemva kokuba isilawuli sibonise ukuthi iphuzu elibekiwe selifinyelelwe.
3. Gada ukubuyiselwa kwezinga lokushisa ngemva kokulayisha.Isikhathi esibandayo kakhulu emjikelezweni wokupholisa senzeka ngemva kwemizuzu emi-3-5 ngemuva kokulayisha inqwaba entsha. Ukwehla kwezinga lokushisa akufanele kudlule i-10°C ye-XCJ-K600 enomthwalo ongu-15-20 kg. Uma ukwehla kudlula i-15°C, nciphisa usayizi wenqwaba noma wandise isikhathi sokushisa kusengaphambili.
4. Sebenzisa umsebenzi wesikhathi ukuze ulawule umjikelezo ngendlela ehambisanayo.Isibali sikhathi samahora angu-0-99.99 esine-heater stop ezenzakalelayo kanye ne-alamu ezwakalayo iqinisekisa ukuthi i-batch ngayinye ithola isikhathi esifanayo sokuphiliswa. Ungathembeli esikhathini esisetshenziswa ngesandla, njengoba ukuguquguquka komqhubi kuletha ukuguquguquka kwenqubo okungadingekile.
5. Linganisa isilawuli se-PID minyaka yonke.Ukuzulazula kwenzwa yokushisa ngokuhamba kwesikhathi kuthinta ukunemba kwesilawuli. Okufakwayo kwesilawuli se-Omron kufanele kuqinisekiswe ngokumelene ne-thermocouple yereferensi elinganisiwe okungenani kanye ngonyaka. Linganisa kabusha uma ukufundwa kuhluka ngaphezu kuka-2°C kunereferensi ekushiseni okuvamile kokusebenza.
6. Qinisekisa uhlelo lokuvikela ukushisa ngokweqile masonto onke.Ukuvikelwa okuphindwe kabili kokushisa okuphezulu kuma-oven e-roller e-XCJ-K600 kanye ne-XCJ-K900 kufaka phakathi izinzwa ezizimele ezinomkhawulo ophezulu ezivala i-heater uma isilawuli esiyinhloko sehluleka. Hlola lolu hlelo ngokuphakamisa iphuzu elibekwe elinomkhawulo ophezulu ngaphezu kokushisa kokusebenza bese uqinisekisa ukuthi i-heater iyanqamuka.

Izinga Lokushisa Elinconywayo Lokushisa Ihhavini Lama-Compounds Enjoloba Evamile

Izinga lokushisa elisekelwe eziqondisweni ezijwayelekile zokuhlanganisa. Amapharamitha angempela kufanele aqinisekiswe nomhlinzeki we-compound futhi aqinisekiswe ngokuhlolwa kwempahla yemishini ngokwe-ASTM D412 kanye ne-ASTM D395.

Izinkinga Ezivamile Zokulawula Izinga Lokushisa Kuma-oven Okwelapha Irabha

Izinkinga eziningi zokulawula izinga lokushisa zingabonakala ngokuqapha njalo isibonisi sesistimu yokulawula i-Delta, esinikeza ulwazi lwesimo sokusebenza ngesikhathi sangempela.

Ukukhetha i-Roller Oven Efanele Yokwelapha Irabha

Ama-oven e-XCJ-K600 kanye ne-XCJ-K900 avela eXiamen Xingchangjia anikeza amavolumu amabili okucubungula ngezikali zokukhiqiza ezahlukene. I-XCJ-K600 inegumbi elingamalitha angu-600 elinobukhulu obungu-1300 mm (W) x 1600 mm (H) x 1100 mm (T), elifanele ukukhiqizwa okuncane kuya kokuphakathi. I-XCJ-K900 inikeza amalitha angu-900 ku-1300 mm (W) x 1600 mm (H) x 1300 mm (T), eklanyelwe imisebenzi yokupholisa ephezulu.

Womabili amamodeli abelana ngesistimu efanayo yokulawula izinga lokushisa eliyinhloko — isilawuli se-Omron PID, i-heater engu-10.5 kW, ifeni elijikelezayo elingu-3000 CBM/h, kanye nokuvikelwa okuphindwe kabili kokushisa. Ukwakhiwa kwangaphakathi nangaphandle kwensimbi engagqwali engu-304 enobukhulu bodonga obungu-1.5 mm kuvimbela ukugqwala eminyakeni yokusebenza. Ububanzi bokushisa obulungisekayo kusukela ekushiseni kwegumbi kuya ku-280°C buhlanganisa zonke izidingo ezivamile ze-vulcanization ze-NBR, EPDM, FKM, silicone, kanye ne-HNBR compounds.

Isiphetho: Izinga Lokushisa Elihlala Likhona Lisho Ikhwalithi Yerabha Ehlala Likhona

Ukulawulwa kwezinga lokushisa kuyisici esibaluleke kakhulu ekuvuvukeni kwesibili. Ihhavini eligoqekayo lokulungisa irabha elinokulawulwa kwe-PID, ukujikeleza komoya oshisayo okusebenzayo, kanye nokujikeleza kwedrama okunezinhlangothi ezine kunikeza izimo zokushisa ezifanayo ezidingekayo ukuze kube nobuningi obuhambisanayo kuzo zonke izingxenye kuzo zonke izingxenye zebhetshi. Abalawuli be-Omron PID abanokukhishwa kwe-4-20 mA SSR, okuhlanganiswe nokujikeleza komoya okungu-3000 CBM/h kanye nokufakwa komoya okungu-100 mm, kunikeza ukuzinza kwezinga lokushisa okudingekayo ukuze kuhambisane ne-ISO 188 kanye ne-ASTM D573.

Abasebenzi abalandela izinqubo zokuphatha izinga lokushisa ezihlelekile — ukufudumala kusengaphambili, ukuqapha ukululama, ukuqinisekisa ukufana, kanye nokugcina izinhlelo zokuphepha — bathola ukwehluka okuphansi kwezakhiwo zerabha ezilungisiwe kanye nesivuno esiphezulu sokukhiqiza.