labarai

Tsarin RTM yana da fa'idodin tattalin arziƙi mai kyau, ƙirar ƙira mai kyau, ƙarancin canzawar styrene, daidaiton girman girman samfur da ingantaccen ingancin ƙasa har zuwa saman A.
Tsarin gyare-gyare na RTM yana buƙatar ƙarin girman girman ƙirar. rtm gabaɗaya yin amfani da yin da yang don rufe ƙirar, don haka girman kuskuren ƙirar da daidaitaccen sarrafa kauri daga cikin rami bayan rufe ƙirar shine babban batu.

1, Zabin kayan aiki
Don sarrafa madaidaicin ƙirar ƙira, zaɓin albarkatun ƙasa shine muhimmin mahimmanci. Samar daRTM mda aka yi amfani da shi a cikin gashin gashi na gel ya kamata ya sami babban tasiri mai ƙarfi, juriya mai zafi da ƙananan raguwa, gabaɗaya za a iya amfani da vinyl ester nau'in gel gel gashi.
RTM mold guduro gabaɗaya kuma yana buƙatar mai kyau juriya na zafi da rigidity, wani mataki na tasiri tauri, shrinkage ne kananan ko kusa da sifili shrinkage.RTM molds tare da fiber ƙarfafa kayan za a iya amfani da 30g / ㎡ ba Alkali surface ji da 300g / ㎡ ba Alkali short-yanke ji. Tare da 300g / m ba alkali short-yanke ji fiye da 450g / m mara-alkali short-yanke ji sanya daga mold shrinkage ne m, mafi girma girma daidaito.

2, Sarrafa tsari
Zaɓin kayan albarkatun ƙasa shine don sarrafa girman ƙirar RTM da kauri mai mahimmanci na hanyar haɗin gwiwa, kuma a cikin tsarin jujjuyawar ƙira a kowane lokaci kulawar inganci shine mafi mahimmancin tsari. Idan wannan sarrafa tsarin bai dace ba, koda kuwa albarkatun kasa sun hadu da amfani da buƙatun, yana da wuya a juya mold tare da ma'auni daidai da kauri mai mahimmanci.
Tsarin juya mold yakamata ya fara fahimtar madaidaicin ƙirar itacen miƙa mulki. Domin tabbatar da daidaito, a cikin farkon tace itace mold zane za a iya amfani da bisa ga mold shrinkage kudi don barin wani adadin shrinkage izni. Bugu da ƙari, ya kamata a biya hankali ga sauye-sauye na gyaran gyare-gyare na katako na katako, dole ne a tono kullun katako na katako. Scars da shrinkage itace ba daidai ba zai haifar da farfajiyar ƙirar fiberglass ba lebur ba. Tono fitar da scars da kuma cire saman burrs, surface na itace mold dole ne a scraped putty magani, kullum da ake bukata don scrape 2 ~ 3 sau. Bayan an warke putty, yi amfani da takarda yashi don goge saman har sai ya cika girman girman da sifofin daidaiton buƙatun.
Katako mold samar dole ne a shirye su ciyar kokarin, domin a general, da girma daidaito naFRP mold a ƙarsheya dogara da daidaiton ƙirar katako. Don tabbatar da cewa saman gilashin gilashin da aka ƙarfafa filastik filastik yana da santsi kuma mai tsabta, kunna nau'in gilashin gilashi na farko da aka ƙarfafa filastik filastik, gel gashi Layer ta amfani da hanyar fesa ya fi dacewa.
Spraying gelcoat ya kamata kula da daidaitawa da iska kwarara na gun, don haka da cewa gelcoat guduro atomization ne uniform, ba ya nuna barbashi. Fasa bindiga da bindiga ya kamata su kasance a waje da mold, don kada su haifar da gel gashi rataye, shafi ingancin surface. Bayan da gel gashi Layer ya warke, manna saman ji. Jikin saman ya kamata ya kasance a waje da ƙirar, don kada ya haifar da rataye gelcoat na gida, yana shafar ingancin yanayin.
Bayan an warke Layer gashi gel, manna abin da aka ji, saman ji ya kamata a rufe shi da lebur, nannade ko cinya dole ne a yanke kuma a gyara. Tsaya wani wuri mai kyau, ana iya tsoma goga a cikin ɗan ƙaramin guduro don jiƙa ta cikin yanayin da aka ji, kula da sarrafa adadin manne, duka don samun damar shiga cikin fiber sosai, amma ba da yawa ba. Babban manne abun ciki, kumfa ba sauki ware, da kuma haifar da curing exothermic manyan, manyan shrinkage. Surface ji Layer guduro curing don ɗaukar kumfa, sama kumfa ba zai iya yanke ta cikin gel gashi Layer.
Bayan zabar kumfa, yashi mai dacewa, cire fiberglass burrs da cire ƙura mai iyo, manna hannun hannu 300g / m² ba alkali short-yanke ji, kowane lokaci kawai 1 ~ 2 yadudduka na manna, za a warke bayan exothermic ganiya kafin ka iya ci gaba da manna. Manna zuwa kauri da ake bukata, za ka iya sa da jan karfe bututu, da kuma kwanciya rufi core block. Modulation na gilashin beads guduro putty, a matsayin kwanciya na thermal rufi core block m, da abin da ya cika rata tsakanin thermal rufi core block.
Bayan kwanciya, ya kamata a yi amfani da ƙwanƙwasa ƙwanƙwasa gilashi don sassauta ratar da ke saman babban shingen rufin. Insulation core block Layer curing sa'an nan manna 3 ~ 4 yadudduka na short-yanke ji, za ka iya manna mold karfe kwarangwal. Manna kwarangwal na karfe, kwarangwal na karfe da farko an cire shi don kawar da damuwa na walda, kuma kwarangwal na karfe da rata tsakanin mold yakamata a cika don hana cutarFRPnakasar mold tare da kwarangwal na karfe.
Bayan an warke kashi na farko na mold, an cire gyaggyarawa, an cire abin da ya wuce gona da iri, ana tsabtace tarkace da tarkace, kuma ana amfani da takardar kakin zuma. Ya kamata kaurin takardar kakin zuma da aka yi amfani da shi ya zama iri ɗaya kuma tsayin daka ya zama ƙarami. Kada a nannade takardar kakin zuma a cikin kumfa na iska, da zarar an sami kumfa na iska, sai a cire shi kuma a sake mannawa don tabbatar da girman kogin. Ya kamata a yanke haɗin gwiwa, kuma a daidaita rata tsakanin zanen kakin zuma da siminti ko roba. Bayan an yi amfani da takardar kakin zuma, ana iya jujjuya nau'i na biyu daidai da na farko. Ana yin nau'i na biyu bayan an fesa gelcoat, kuma dole ne a shirya ramukan allura da ramukan iska. Juya yanki na biyu na mold, dole ne ku fara cire gefen tashi, weld fil ɗin sakawa da kusoshi, don samun cikakkiyar warkewa bayan rushewa.

3, Mold dubawa da gyara matakan
Bayan rushewa da tsaftacewa, yi amfani da siminti na roba don auna kauri na rami. Idan kauri da girman na iya saduwa da buƙatun, sa'an nan bayan nika da polishing tsari da aka kammala, da RTM mold za a yi nasara da kuma za a iya tsĩrar da samar. Idan gwajin, saboda rashin kula da tsari mara kyau da sauran dalilai da ke haifar da kogin mold bai dace da bukatun ba, raguwa, sake buɗe mold yana da tausayi sosai.
Dangane da gwaninta, ana iya samun magunguna guda biyu:
① ya soke ɗaya daga cikin mold, sake buɗe wani yanki;
② yin amfani da tsarin RTM da kanta don gyara halaye na mold, yawanci wani yanki na gelcoat na mold ɗin da aka kashe, yana kwance akangilashin fiber ƙarfafa abu, da sauran yanki na mold an makala a cikin kakin zuma takardar, fesa gelcoat, sa'an nan da mold allurar, da za a warke bayan mold sarrafa, za a iya isar da shi zuwa ga amfani.