Samar da
Rubber nadi gyare-gyare ne yafi zuwa manna shafi roba a kan karfe core, ciki har da nannade Hanyar, extrusion Hanyar, gyare-gyaren Hanyar, allura matsa lamba Hanyar da allura Hanyar.A halin yanzu, manyan samfuran cikin gida sune injina ko manna da hannu da gyare-gyare, kuma yawancin ƙasashen waje sun sami injina.Large da matsakaici-sized roba rollers ana m samar da profiling extrusion, ci gaba da manna gyare-gyare ta extruded fim ko ci gaba da iska gyare-gyaren ta extruding tef.A lokaci guda kuma, a cikin tsarin gyare-gyaren, ƙayyadaddun bayanai, girma da siffar bayyanar ana sarrafa su ta atomatik ta hanyar microcomputer, wasu kuma ana iya yin su ta hanyar hanyar extruder na dama da kuma extrusion na musamman.
Hanyar gyare-gyaren da aka ambata a sama ba zai iya rage ƙarfin aiki kawai ba, amma kuma ya kawar da kumfa mai yiwuwa.Don hana abin nadi na roba daga lalacewa a lokacin vulcanization da kuma hana samar da kumfa da soso, musamman ga robar da aka ƙera ta hanyar nannade, dole ne a yi amfani da hanyar matsi mai sassauƙa a waje.Yawancin lokaci, ana nannade saman saman abin nadi na roba kuma a yi masa rauni tare da yadudduka na auduga ko zanen nailan, sannan a gyara shi kuma a danna shi da wayar karfe ko fiber igiya.Ko da yake an riga an sarrafa wannan tsari, dole ne a cire suturar bayan vulcanization don samar da tsarin "cecal", wanda ke dagula tsarin masana'anta.Bugu da ƙari, yin amfani da tufaffi da igiya mai jujjuyawa yana da iyaka sosai kuma amfani yana da yawa.sharar gida.
Don ƙanana da ƙananan na'urorin roba, ana iya amfani da matakai iri-iri na samarwa, kamar facin hannu, ƙaƙƙarfan ƙaho, matsa lamba na allura, allura da zubowa.Don inganta haɓakar samarwa, yawancin hanyoyin gyare-gyaren yanzu ana amfani da su, kuma daidaito ya fi girma fiye da na hanyar da ba a yi ba.Matsin allura, allurar roba mai ƙarfi da zub da robar ruwa sun zama mafi mahimmancin hanyoyin samarwa.
Vulcanization
A halin yanzu, hanyar vulcanization na robar manya da matsakaita masu girma dabam shine har yanzu vulcanization tanki vulcanization.Kodayake an canza yanayin matsi mai sassauƙa, har yanzu bai rabu da nauyi mai nauyi na sufuri, ɗagawa da saukewa ba.Tushen zafi na vulcanization yana da hanyoyin dumama guda uku: tururi, iska mai zafi da ruwan zafi, kuma babban abu har yanzu tururi ne.The roba rollers tare da musamman bukatun saboda lamba na karfe core tare da ruwa tururi daukan kai tsaye tururi vulcanization, kuma lokaci za a tsawaita da 1 zuwa 2 sau.Ana amfani da ita gabaɗaya don robobin roba tare da rami mara ƙarfi.Ga robar roba na musamman da ba za a iya vulcanized da tanki mai ɓarna ba, wani lokacin ana amfani da ruwan zafi don ɓarna, amma ana buƙatar magance matsalar gurɓacewar ruwa.
Domin hana roba da karfen core daga lalacewa saboda daban-daban shrinkage na zafi conduction bambanci tsakanin roba abin nadi da roba core, vulcanization yawanci rungumi a jinkirin dumama da kuma matsa lamba hanyar karuwa, kuma vulcanization lokaci yana da yawa. fiye da lokacin vulcanization da robar kanta ke buƙata..Domin samun vulcanization iri ɗaya a ciki da waje, da kuma sanya yanayin zafi na ƙarfe na ƙarfe da roba iri ɗaya, babban abin nadi na robar yana tsayawa a cikin tanki na tsawon sa'o'i 24 zuwa 48, wanda ya ninka sau 30 zuwa 50 na al'ada lokacin vulcanization na roba. .
Kanana da ƙananan robar robar yanzu galibi suna canzawa zuwa faranti vulcanizing press gyare-gyare vulcanization, gaba daya canza gargajiya vulcanization Hanyar vulcanization na roba rollers.A cikin 'yan shekarun nan, an yi amfani da injunan gyare-gyaren allura don shigar da gyare-gyare da ɓacin rai, kuma ana iya buɗewa da rufewa ta atomatik.Matsayin injina da sarrafa kansa an inganta sosai, kuma lokacin vulcanization gajere ne, ingancin samarwa yana da girma, kuma ingancin samfurin yana da kyau.Musamman ma a lokacin da ake amfani da na'ura mai yin gyare-gyare na roba, ana haɗa hanyoyin gyare-gyare guda biyu na gyare-gyare da vulcanization zuwa ɗaya, kuma za'a iya rage lokacin zuwa minti 2 zuwa 4, wanda ya zama muhimmiyar alkibla don bunkasa samar da robar.
A halin yanzu, roba mai ruwa wanda aka wakilta ta polyurethane elastomer (PUR) ya ci gaba da sauri a cikin samar da rollers na roba, kuma ya buɗe sabon hanyar abu da juyin juya hali a gare shi.Yana ɗaukar nau'in zubowa don kawar da hadaddun ayyukan gyare-gyare da manyan kayan aikin vulcanization, yana sauƙaƙa aikin samar da robar roba.Duk da haka, babbar matsalar ita ce dole ne a yi amfani da molds.Don manyan rollers na roba, musamman ga samfuran mutum ɗaya, farashin samarwa yana ƙaruwa sosai, wanda ke kawo babbar matsala ga haɓakawa da amfani.
Domin magance wannan matsala, wani sabon tsari na PUR roba abin nadi ba tare da mold masana'antu ya bayyana a cikin 'yan shekarun nan.Yana amfani da polyoxypropylene ether polyol (TDIOL), polytetrahydrofuran ether polyol (PIMG) da diphenylmethane diisocyanate (MDl) azaman albarkatun ƙasa.Yana amsawa da sauri bayan haɗawa da motsawa, kuma ana zubawa da yawa akan ainihin abin nadi na roba a hankali., Ana gane mataki-mataki yayin da ake zubawa da kuma warkewa, kuma a ƙarshe an kafa abin nadi na roba.Wannan tsari ba gajere ne kawai a cikin tsari ba, yana da girma a cikin injina da sarrafa kansa, amma kuma yana kawar da buƙatar ƙaƙƙarfan ƙira.Yana iya samar da rollers na roba daban-daban dalla-dalla da kuma girma a yadda ya so, wanda ya rage tsada sosai.Ya zama babban jagoran ci gaba na PUR roba rollers.
Bugu da ƙari, ƙananan na'urorin roba da aka yi amfani da su wajen kera kayan aiki na ofis tare da robar siliki na ruwa suma suna haɓaka cikin sauri a duk faɗin duniya.An kasu kashi biyu: dumama curing (LTV) da dakin zafin jiki curing (RTV).Kayan aikin da ake amfani da su kuma sun bambanta da PUR na sama, suna ƙirƙirar wani nau'in simintin simintin.Anan, batun mafi mahimmanci shine yadda ake sarrafawa da rage danko na fili na roba ta yadda zai iya kula da wani matsa lamba da sauri.
Lokacin aikawa: Yuli-07-2021
