ABS, wanda aka fi sani da acrylonitrile butadiene styrene, an kafa shi ta hanyar copolymerization na monomers uku na acrylonitrile-butadiene-styrene. Saboda nau'i-nau'i daban-daban na monomers guda uku, za'a iya samun kaddarorin daban-daban da zafin jiki na narkewa, aikin motsi na ABS, haɗuwa tare da sauran robobi ko ƙari, yana iya fadada amfani da aikin ABS.
Ruwan ruwa na ABS yana tsakanin PS da PC, kuma ruwan sa yana da alaƙa da zafin allura da matsa lamba, kuma tasirin matsa lamba na allura ya ɗan fi girma. Sabili da haka, ana amfani da matsa lamba mafi girma a cikin gyare-gyare don rage narke danko da inganta ciko. yi.
1. Filastik sarrafa
Adadin sha ruwa na ABS shine kusan 0.2% -0.8%. Don ABS na gaba ɗaya, ya kamata a gasa shi a cikin tanda a 80-85 ° C na tsawon sa'o'i 2-4 ko a cikin hopper bushewa a 80 ° C na sa'o'i 1-2 kafin sarrafawa. Don ABS mai jure zafi mai ɗauke da abubuwan PC, zafin bushewa yakamata a ƙara shi daidai zuwa 100 ° C, kuma takamaiman lokacin bushewa ana iya ƙaddara ta hanyar fitar da iska.
Matsakaicin kayan da aka sake fa'ida ba zai iya wuce 30% ba, kuma maki ABS na lantarki ba zai iya amfani da kayan da aka sake fa'ida ba.
2. Zaɓin na'urar gyare-gyaren allura
Za'a iya zaɓar na'ura mai gyare-gyaren allura na Ramada (tsawon tsayi-zuwa diamita rabo 20: 1, rabon matsawa fiye da 2, matsa lamba mafi girma fiye da 1500bar). Idan ana amfani da babban launi mai launi ko bayyanar samfurin yana da girma, za'a iya zaɓar dunƙule tare da ƙaramin diamita. Ƙarfin matsawa yana ƙaddara bisa ga 4700-6200t / m2, wanda ya dogara da ƙimar filastik da buƙatun samfur.
3. Mold da ƙirar kofa
Za a iya saita zafin jiki a 60-65 ° C. Diamita mai gudu 6-8mm. Faɗin ƙofar yana da kusan 3mm, kauri ɗaya ne da na samfurin, kuma tsayin ƙofar ya kamata ya zama ƙasa da 1mm. Ramin huɗa yana da faɗin 4-6mm da kauri 0.025-0.05mm.
4. Narke zafin jiki
Ana iya ƙayyade shi daidai ta hanyar allurar iska. Maki daban-daban suna da zafin narke daban-daban, saitunan da aka ba da shawarar sune kamar haka:
Matsayin tasiri: 220°C-260°C, zai fi dacewa 250°C
Matsayin wutar lantarki: 250°C-275°C, zai fi dacewa 270°C
Matsayi mai jurewa zafi: 240°C-280°C, zai fi dacewa 265°C-270°C
Matsayin riƙe harshen wuta: 200°C-240°C, zai fi dacewa 220°C-230°C
Matsakaicin matsayi: 230°C-260°C, zai fi dacewa 245°C
Gilashin fiber ƙarfafa sa: 230 ℃-270 ℃
Don samfuran da ke da buƙatun saman ƙasa, yi amfani da zafin narke mafi girma da zafin ƙima.
5. Gudun allura
Ana amfani da saurin gudu don matakin juriya da wuta, kuma ana amfani da saurin sauri don juriya mai zafi. Idan buƙatun saman samfurin sun yi girma, ya kamata a yi amfani da sarrafa saurin allura mai sauri da matakai da yawa.
6. Matsi na baya
Gabaɗaya, ƙananan matsa lamba na baya, mafi kyau. Matsi na baya da aka saba amfani da shi shine 5bar, kuma kayan rini yana buƙatar matsi mafi girma na baya don sanya launin ya hade.
7. Lokacin zama
A zafin jiki na 265 ° C, lokacin zama na ABS a cikin silinda narke bai kamata ya wuce minti 5-6 a mafi yawan ba. Lokacin jinkirin harshen wuta ya fi guntu. Idan ya zama dole don dakatar da injin, yakamata a sauke saitin zafin jiki zuwa 100 ° C da farko, sannan a tsaftace silinda mai narke tare da ABS na gaba ɗaya. Ya kamata a sanya cakuda mai tsabta a cikin ruwan sanyi don hana kara lalacewa. Idan kana buƙatar canzawa daga wasu robobi zuwa ABS, dole ne ka fara tsaftace silinda mai narkewa tare da PS, PMMA ko PE. Wasu samfurori na ABS ba su da matsala lokacin da aka sake su daga samfurin, amma za su canza launi bayan wani lokaci, wanda zai iya haifar da zafi ko kuma filastik zama a cikin silinda narke na dogon lokaci.
8. Bayan sarrafa samfuran
Gabaɗaya, samfuran ABS ba sa buƙatar aiwatarwa bayan sarrafawa, samfuran ƙirar lantarki kawai suna buƙatar gasa (70-80 ° C, awanni 2-4) don wuce alamun saman, kuma samfuran da ke buƙatar lantarki ba za su iya amfani da wakili na saki ba. , kuma samfuran dole ne a tattara su nan da nan bayan an fitar da su.
9. Abubuwan da ke buƙatar kulawa ta musamman lokacin yin gyare-gyare
Akwai maki da yawa na ABS (musamman majinjin harshen wuta), narkewar wanda ke da mannewa mai ƙarfi a saman dunƙule bayan yin filastik, kuma zai rube bayan dogon lokaci. Lokacin da yanayin da ke sama ya faru, ya zama dole a cire sashin haɗin gwiwa da kwampreso don gogewa, kuma a kai a kai tsaftace dunƙule tare da PS, da dai sauransu.
Lokacin aikawa: Agusta-09-2023