Pet (polyethylene terepththatal)
Bushewa da crystallizing kafin aiwatar da tsari mai sarrafawa
Dole ne a bushe shi kafin shafa. Pet yana da matukar hankali ga hydrolysis. Airwar iska na al'ada yana da 120-165 c (248-329 f) na tsawon awanni 4. Yakamata danshi ya zama ƙasa da 0.02%.
Lokacin bushewa na Idemade, lokacin bushewa kawai yana buƙatar 15mins kawai. Ajiye kuɗin kuzari kimanin 45-50%. Danshi abun ciki na iya zama 50-70ppm. (Zazzabi mai bushe, lokacin bushewa na iya daidaitawa ta hanyar buƙatun abokan ciniki game da bushewa na bushewa, duk tsarin yana sarrafawa ta Siemens PLC). Kuma shi ne aiki tare da bushewa & crystallizzing a lokaci guda.
Narke zazzabi
265-280 C (509-536 f) don maki masu rarrabe
275-290 c (527-5544 F) don Gron Gilashin Gilashin Gilashin
Zazzabi na mold
80-120 c (176-248 F); FULINGOYSORERING: 100-110 c (212-20 f)
Al'addanci na kayan aiki
30-130 MPa
Saurin alluna
Babban gudu ba tare da haddasa yawan aiki ba
Na'urar allurar rigakafi:
Ana amfani da gyaran allurar don haɓaka ƙwayar dabbar dabbobi. Yawancin lokaci, ana iya kafa dabbobi ta hanyar injin ƙirar ƙirar ƙira.
Zai fi kyau zaɓi ƙuƙwalwa mai narkewa tare da ringi mai juyawa a saman, wanda yake da babban ƙarfin hali da kuma sanya rabo, da rabo na matsayi ba l / d = (15 ~ 20): (15 ~ 20) rabo daga 3: 1.
Kayan aiki tare da manyan l / d zauna a cikin ganga na tsawon lokaci, da kuma zafi mai yawa na iya haifar da lalacewar kuma yana shafar aikin samfuri. Matsakaicin matsawa ya yi ƙanana don samar da ƙasa da zafi, yana da sauƙi a shuka, kuma yana da ƙarancin aiki. A gefe guda, fashewar zargin gilashin za ta zama more kuma kayan aikin kayan kwalliya na zaruruwa. Lokacin da gilashin fiber na farfadowa da dabbobi yake karfafa, bangon ciki bangon yana sawa, kuma ganga na daɗaɗɗen da aka yi da sandar sa mai tsayayya da kaya.
Tun da bututun ƙarfe na gajarta, bangon ciki yana buƙatar ƙasa kuma apertuyin ya zama babba. Fuskokin bututun mai launin hoda yana da kyau. Abubuwan da zasu iya samun matakan sarrafa zazzabi don tabbatar da cewa nozzles baya daskare da toshewa. Koyaya, yawan ƙwayar bututun bai yi girma sosai ba, in ba haka ba zai haifar da rudani. Dole ne a yi amfani da kayan masarufi na pp mai ƙarfi da aka tsabtace da ganga an tsabtace kafin fara fom.
Babban yanayin yanayin gyara don dabbobi
1, zazzabi na ganga.Matsakaicin zafin jiki na dabbar dabbobi yana kunkuntar, kuma zazzabi zai shafi aiwatar da samfurin. Idan zazzabi ya yi ƙasa sosai, ba ya da kyau a gina kayan aikin filastik, dents, da rashin lahani na kayan. A akasin wannan, idan zazzabi ya yi girma sosai, zai haifar da fashewa, nozzles zai gudana, launi zai zama duhu, har ma da ƙarfin lantarki zai faru, har ma da lalacewa zai faru. Gabaɗaya, zafin jiki na ganga an sarrafa shi a 240 zuwa 280 ° C, kuma ana ƙarfafa zafin jiki na bututun ƙarfe ya kamata ya wuce ƙasa da zazzabi.
2, zazzabi m.Zazzabin da keɓaɓɓe yana shafar ragin sanyaya da lu'ulu'u na narke, da abubuwan crystallity ya bambanta, kuma kaddararrun sassan filastik ma sun bambanta. Yawancin lokaci, ana sarrafa zafin jiki na mold a 100 zuwa 140 ° C. Ana ba da shawarar ƙaramin ƙimar lokacin da aka samar da sassan filastik na bakin ciki. A lokacin da samar da sassan filastik-filastik, ana bada shawara don samun darajar girma.
3.A cikin dabbobi narke shine ruwa da sauki don samar. Yawancin lokaci ana amfani da matsin lamba, matsin lamba shine 80 zuwa 140 MPa, kuma fiber-gilashin-karfafa dabbobi yana da matsarin fata na 90 zuwa 150 MPa. Ya kamata a tantance matsin cikin allura ta hanyar danko na dabbobi, nau'in da kuma girman ƙofar, zazzabi, da nau'in injin daskararre, da nau'in injin daskararre.
Nawa ne ka sani game da aikin robaban dabbobi?
1, sarrafa filastik
Tun da pet macromeleces dauke da tushen lipid kuma suna da wani hydroficity, barbashi suna kula da ruwa a yanayin zafi. Lokacin da danshi abun ciki ya wuce iyaka, nauyin kwayoyin na dabbobi yana raguwa, kuma samfurin yana da launin launi kuma ya zama labltle. A wannan yanayin, dole ne a bushe kayan kafin aiki. Zazzabi bushewa shine awanni 150 4, yawanci 170 3 zuwa 4. Ana amfani da hanyar jirgin sama don gwada ko kayan ya bushe gaba ɗaya.
2. Zabi na injin gyara na allura
Pet yana da gajeren melting da babban melting nuni, don haka ya zama dole don zaɓar tsarin allura tare da kewayon da kai a lokacin filastik ba zai iya zama ƙasa da 2/3 na nauyinsa ba. Yawan allurar inji. Dangane da waɗannan buƙatun, a cikin 'yan shekarun, Ramada ya kirkiro jerin kananan kananan kantin sayar da abinci na musamman na filastik. Wanda aka zaba da kararrakin cuba ya fi 6300t / m2.
3
Pet saba ne da mai gudu mai zafi. Garkuwa ta zafi tsakanin mold da na'urar allurar rigakafi an fi dacewa da kauri tare da kauri 12 mm, da kuma garkuwar zafi na iya tsayayya da babban matsin lamba. Shafin tashar jiragen ruwa dole ne ya isa ya guji overheating ko guntu, amma zurfin tashar jiragen ruwa yawanci ba ta wuce 0.03 mm, in ba haka ba flashing yana da sauƙi.
4. Meming zazzabi
Ana iya aiwatar da ma'auni ta hanyar jirgin sama. A 270-295 ° C, matakin inganta kayan gf-bea za a iya saita zuwa 290-315 ° C.
5. Saurin allura
Saurin allura yana da sauri, wanda ke hana farkon allurar. Amma da sauri, babban karfi na farashin yana sa kayan. Za'a kammala Popup a cikin 4 seconds.
6, matsin lamba
Ƙananan mafi kyau, don kada a sa. Gaba daya bai wuce 100.
Lokaci: Feb-24-2022