一, Ci gabanJuyawa Molding
A cikin ƙasashen waje, gyare-gyaren juyawa ya kasance ɗaya daga cikin hanyoyin gyare-gyaren filastik da ake amfani da su sosai. A cikin 1940s, an yi amfani da manna PVC don samar da kayan wasan yara irin su ƙwallon filastik ta hanyar gyare-gyaren juyawa. A cikin 1950s, da polyethylene rotational gyare-gyaren tsari ta yin amfani da low-yawa polyethylene foda guduro kamar yadda albarkatun kasa da aka ɓullo da don samar da masana'antu kayayyakin kamar polyethylene ajiya tankuna da kuma manyan bututu, wanda ƙwarai inganta ci gaban da juyawa gyare-gyaren tsari. Tun daga wannan lokacin, nailan, polycarbonate, ABS da sauran robobi suma an ƙera su ta hanyar gyare-gyaren juyawa. A farkon shekarun 1970, gyare-gyaren juyawa ya zama babban tsari na gyare-gyaren filastik.
A 1971, akwai fiye da 50 kamfanoni tsunduma a cikin samar da juyawa gyare-gyaren kayayyakin a Birtaniya, da kuma game da 70 masana'antun na juyi gyare-gyaren thermoplastics; Akwai kamfanoni sama da 20 da ke aikin sarrafa gyare-gyare a cikin nahiyar Turai, gami da kamfanoni daga Jamus, Faransa, Switzerland, Norway, Austria, Denmark da sauran ƙasashe.
A farkon 1970s, Birtaniya ta iya samar da na'ura mai jujjuyawar na'ura mai iya samar da kwantena tare da damar 18000L; Netherlands ta samar da wani babban tanki mai silinda mai tsayin mita 2.1 da tsayin 4.8m. Tankin yana 540kg kuma kaurin bango shine 25mm. A cikin 1970, jimillar adadin samfuran gyaran gyare-gyare a Turai ya kai fiye da 15000t, gami da kusan 7000t a Biritaniya.
A cikin 1970, fiye da raka'a 500 a Amurka sun tsunduma cikin samar da samfuran gyare-gyaren juyawa. Suna da fiye da 500jujjuyawar gyare-gyaren inji, kuma ƙarfin kwantena na juyawa ya wuce 10000 L (galan 2400); Matsakaicin sassan filastik da injin gyare-gyaren nadi ya samar shine 4.6× maki hudu shida× 2.1m.
A cikin 1960s, saurin haɓaka fasahar gyare-gyaren juyawa yana da alaƙa da haɓaka kaddarorin guduro da kayan aikin juyawa. A cikin wannan lokacin, an ƙera robobi na musamman don gyare-gyaren juyawa, kamar PE P-320, Raychem Flamolin 771 da sauran resin polyethylene da Kamfanin United Carburization Company ya haɓaka. FE P-320 wani nau'i ne na ƙananan ƙananan polyethylene, wanda ke da kyakkyawan aikin gyaran gyare-gyare na ƙananan ƙananan polyethylene da ƙananan tasiri na zafin jiki, juriya na sinadarai da kuma juriya na damuwa na resin polyethylene mai girma; Raychems F1amo1in 711 resin polyethylene mai haɗin giciye don gyare-gyaren juyawa. Baya ga kasancewa mai haɗin kai, yana kuma da kayan kashe kansa. Shahararriyar yin gyare-gyaren giciye mai haɗin polyethylene resin Marlex Cl-100 na Philips kuma an haɓaka shi a wannan lokacin.
Domin saduwa da bukatun shirya manyansamfuran gyare-gyaren juyawa, da yawa inji iya forming manyan juyawa gyare-gyaren kayayyakin da aka ɓullo da a cikin marigayi 1960s, wanda zai iya yadda ya kamata amfani da bene sarari da kuma zafi makamashi. A shekara ta 1970, fiye da rabin injunan gyare-gyaren nadi da aka sayar a kasuwa suna da diamita na jujjuya fiye da 1.75m. Bugu da kari, an kuma inganta matakin sarrafa na'urar zuwa digiri daban-daban. Alal misali, na'ura mai jujjuya hannu guda uku McNeil Auronismodel 3000-200 na iya sarrafa yanayin dumama da sanyaya kowane hannu daban, ta yadda samfuran masu girma dabam da kayan za su iya jujjuya su lokaci guda. Diamita na jujjuyawar ta ya kai mita 5, kuma jimillar nauyin mold da resin da kowane hannu zai iya ɗauka ya kai kusan 13500N; Nau'in jujjuya nau'in jaket ɗin tare da kyakkyawan tasirin canjin zafi da ƙaramin yanki kuma an ƙera shi kuma an kera shi a wannan lokacin.
Hakanan ana iya samun ci gaba da bincike na gyare-gyaren jujjuyawa a kasar Sin tun shekarun 1960. A ƙarshen 1960s, masana'antar wasan wasan kwaikwayo ta Shanghai sun fara amfani da hanyar yin gyare-gyaren juyi don samar da pellet ɗin PVC mai laushi a kowace shekara; Na uku shuka na Shangsu Plastics ya samu nasarar gwajin samar da 200L da 1500L yi gyare-gyaren polyethylene kwantena; A tsakiyar shekarun 1970, Cibiyar Bincike ta FRP ta Beijing ta yi nasarar kera kwandon nailan mai jujjuyawa tare da shafa shi a cikin na'urorin kashe gobarar daji da sauran kayayyaki. Duk da haka, ainihin manyan masana'antun masana'antu sun zo bayan gabatarwar ci gabajuyawa gyare-gyarekayan aiki da fasaha daga kasashen waje a tsakiyar da kuma karshen 1980s. A halin yanzu, ta sami damar shirya manyan samfuran filastik kamar tankunan ajiyar sinadarai tare da kwantena fiye da 20000L da babban filastik duk jiragen ruwa na filastik.
二, Aikace-aikacen Juyawa Molding
Tare da haɓaka fasahar gyare-gyaren juyi, ana faɗaɗa iyakar aikace-aikacen samfuran gyare-gyaren juyi. Har ya zuwa yanzu, aikace-aikacen samfuran gyare-gyaren jujjuyawar sun yi yawa sosai. Ana iya misalta wasu aikace-aikacen wakilci kamar haka.
1. sassa na robobi na jujjuya don kwantena
Irin wannan nau'in filastik ana amfani dashi sosai a cikin tankunan ajiya na ruwa, tankuna na sinadarai na ruwa daban-daban (kamar acid, alkali, gishiri, takin sinadari, maganin kashe kwari, da sauransu), kwantenan mai (tankunan mai da tankunan mai na motoci da jirgin sama). batura, da dai sauransu.
Ya fi shafa polyethylene da polyvinyl chloride manna guduro, da kuma yi gyare-gyaren kayan aikin bututu daban-daban, kamar kwandishan kwandishan, backrest, handrail, da dai sauransu.
3.Kayayyakin wasanni da sauran mabambanta daban-daban
Akwai sassa daban-daban na PVC manna roto gyare-gyare, kamar polo na ruwa, ƙwallon iyo, matashin kujerar keke, ƙaramin jirgin ruwa da abin girgiza tsakanin jirgi da tashar jirgin ruwa. Rotogrammed crosslinked polyethylene ganga da aka yi daga Philips' rotogrammed crosslinked polyethylene itace “Maricxcl-100″ na iya yin gogayya da ganga na ƙarfe, kuma yana da kyakkyawan juriya na lalata sinadarai da ƙarancin kulawa. An sayar da tire mai jujjuyawa a cikin Amurka, Japan da wasu ƙasashe a farkon 1970s; Kwale-kwale, kwale-kwale, da dai sauransu su ma ana yin abubuwan da aka ƙera su a cikin wallafe-wallafe.
4. Kayan wasan yara, samfuri, kayan aikin hannu, da sauransu
Domin ana iya kerar da gyare-gyaren jujjuyawar ta hanyar simintin gyare-gyaren gyare-gyare, lantarki da sauran matakai; Fuskar sassan sassa masu jujjuyawar jujjuyawar suna da sakamako mai kyau na "kwafi" akan kyakkyawan tsari na farfajiyar ƙura. Sabili da haka, hanyar jujjuyawar jujjuyawar na iya sanya samfuran su zama masu laushi da kyau. Sabili da haka, ana amfani dashi sau da yawa don yin samfurori tare da darajar kallo mai girma, musammankayan wasan yara, samfuri, kayan aikin hannu, da sauransu.
5. Baya ga abubuwan da ke sama, akwai kuma iri-irikwalaye, bawo, manyan bututu da sauran kayayyakin da ake amfani da su sosaisamfuran gyare-gyaren juyawa, kamar akwatunan juyawa,kwandon shara, Bawowin inji, murfin kariya, fitilu, bandakuna, bandakuna, dakunan tarho, jiragen ruwa, da sauransu.
Rotational gyare-gyare kayayyakin da aka yadu amfani a ruwa sinadaran ajiya da kuma sufuri, sinadaran Enterprises, masana'antu shafi,tankunan wankada dauki tankuna a rare ƙasa shiri, kazalika da kogin dateku buoys, gidatankunan ruwada sauran fagage.
Lokacin aikawa: Nuwamba-15-2022