Fasahar sarrafa sarrafa filastik na sarrafa kayan abinci na albarkatun ƙasa

Yin allurar rigakafi shine fasahar injiniya. Ya ƙunshi canjin hanyoyin cikin samfuran da amfani waɗanda zasu iya kula da kaddarorinsu na asali. Muhimmin yanayin tsari don allurar rigakafi sune yanayin zafi, matsi, da lokutan aiki da suka shafi filastantar kwarara da sanyaya.

Na farko, kula da zazzabi

1, Berel zazzabi: Tsarin allura na allura yana buƙatar sarrafa zafin jiki na zafin jiki na ganga, butya bututu da zazzabi mold. Na farko yanayin zafi na farko musamman yana shafar kayan aikin filastik da kuma filastik na filastik, yayin da yake ƙarshen zafin jiki ya shafi kwarara da sanyaya filastik. Kowane filastik yana da yawan zafin jiki daban-daban, wannan filastik, saboda akwai zazzabi daban-daban ko lalacewar yanayin zafin jiki, saboda bambanci mai nauyi, filastik a cikin nau'ikan allura Tsarshin ciki injin ma ya bambanta, saboda haka zaɓi na silinder ba iri ɗaya bane.

2, zazzabi mai ban tsoro: yawan baƙin ciki yawanci yafi ƙanƙanuwa da yawan zafin jiki, wannan shine don hana narkewar ya gudana cikin kai tsaye-ta hanyar bututun ƙarfe na iya faruwa "kwarara fari." Da bututun ƙarfe bai kamata ya yi ƙasa ba, in ba haka ba zai haifar da ƙarshen coarcharfin narke kuma ya shafi bututunsu, ko shafar wasan kwaikwayon saboda farkon allurar a cikin rami.

3, zazzabi m kankare: zazzabi mold a kan samfurin na cikin abin da ya shafi kayan aiki da kuma ingancin inganci. Zazzabi da ƙuruciyar ƙayyadadden yana da ƙudurin kasancewarsa ko rashin amfani da filastik lu'ulu'u, girman samfurin da tsari, da sauran yanayin aiki (narke zazzabi, saurin yin allura, da sauransu.

Na biyu, sarrafa kai tsaye:

A cikin tsari na allura, matsin lamba ya hada da matsin lamba na ruwa da kuma alluna, kuma kai tsaye yana shafar filastik da ingancin kayayyaki da ingancin kayayyaki.

1, matsa lamba: (matsi na baya) Lokacin amfani da wani nau'in ƙirar allura, matsin lamba a saman dunƙule lokacin da aka sake sane da filastik. Girman wannan matsa lamba za a iya gyara ta hanyar rashin taimako a tsarin hydraulic. A cikin allura, matsin filastik yana da kullun tare da saurin juyawa na dunƙule. Lokacin da aka karu matsa lamba, lokacin ana ƙara yawan zafin jiki, amma saurin filastik yana raguwa. Bugu da kari, kara matsin lamba na filastik na iya yin zafin jiki na narkewar mahaifa, hadawa da cololant da kuma zubar da gas a cikin narke. A cikin aiki na gaba ɗaya, yanke shawarar yin filastik yadda zai yiwu a kan tsarin tabbatar da ingancin samfurin. A takamaiman darajar ya bambanta da irin nau'in filastik da aka yi amfani da shi, amma da wuya ya wuce kilogiram 20 / cm2.

2. A matsa lamba na allura: a cikin samarwa na yanzu, kusan dukkanin yanayin allura na allura ya dogara ne akan karfin filastik (wanda aka canza daga matsin lamba). Matsar da allurar rigakafi matsin lamba shine shawo kan kwararar filastik daga kicin, kuma ka ba da raguwar cikar.

Na uku, sake zagayowar Molding

Lokacin da ake buƙata don kammala tsarin tsarin gyara na allura ana kiranta sake zagayowar matsin lamba, wanda kuma ake kira sake zagayowar Molding. A zahiri ya haɗa da waɗannan sassan: zagayowar gyada: sake zagayowar motsi kai tsaye yana shafar samar da kayan aiki da kayan aikin kayan aiki. Sabili da haka, a cikin tsari na samarwa, duk lokacin dacewa a cikin tsarin da aka daidaita ya kamata a rage shi a ƙarƙashin ƙayyadadden inganci. A yayin sake zagayowar matsakaiciyar tsari, lokaci na tsari da lokacin sanyaya sune mafi mahimmanci kuma suna da tasiri mai tasiri akan ingancin samfurin. Lokaci na cika a cikin tsari na allura shi ne darasi kai tsaye ga cika darajar, da kuma lokacin cika a samarwa shi ne kusan 3-5 seconds.

Matsakaicin matsin lamba a lokacin yin saiti shine lokacin filastik a cikin rami, da kuma yawan lokacin aiki na zamani na iya zama babba kamar 5 zuwa 10 mintuna). Kafin narke ya daskare a ƙofar, lokacin da ake riƙe da lokaci matsa lokaci na samun sakamako akan daidaito girman samfurin, kuma idan daga baya, ba shi da tasiri. Lokaci na Douse kuma yana da darajar mafi dacewa. An san cewa ya dogara da zafin jiki na kayan, zazzabi mold, da kuma girman babban tashar da ƙofar.

Idan girman yanayin babban sprue da ƙofar daidai ne, yawanci matsin lamba ne wanda ke haifar da mafi ƙarancin kewayon samfurin. Lokacin sanyaya shine ƙaddara ta hanyar kauri daga samfurin, da thermal da crystallization kaddarorin filastik, da zazzabi na mold.