Polima Extrusion Njira - Pulasitiki Extrusion

Njira yopangira polima extrusion imaphatikizapo kutenga zinthu zopangira ndikupanga chinthu chomwe chimatha kupangidwa kukhala mawonekedwe apadera autali, mawonekedwe ndi mitundu yosiyanasiyana.Mbiriyo ndi yosinthika kwambiri ndipo imatha kupangidwa kuchokera kumtundu uliwonse wa rabala.Pali njira ziwiri zopangira mphira extrusion;kuchiritsa kosalekeza kwapaintaneti komanso kuchiritsa kwapaintaneti.

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Kupitilira mumzere machiritso extrusion:

• * M’kachitidwe kameneka mphira wotenthedwayo amawomberedwa kupyolera mu ufa mu mtsinje wofanana ndi kupyola mu ‘ngalande yochiritsa’ imene imakwezera mankhwalawo ku kutentha koyenera kwa vulcanizing ndi kusunga kutentha kumeneko kufikira kuchiritsa kwatha.Pali njira zingapo zomwe zingagwiritsidwe ntchito kupanga 'ngalande yochiritsa' kuphatikiza;mpweya wotentha wokwera kwambiri, uvuni wa microwave, sing'anga yotentha yamadzimadzi (LCM) kapena bedi lagalasi la Ballotini mikanda.Kutalika kwa ngalandeyo kumaganiziridwa pamodzi ndi liwiro la kuwerengera kutentha panthawi yonse ya vulcanizing.Pamene mphira wochiritsidwa akutuluka mumsewu umasunthidwa mu njira yozizira kumene mphira umaziritsidwa ndipo zotsalira zimachotsedwa.Liwiro lomwe mankhwalawa amayenda kudzera munjira yozizira amatsogozedwa ndi chokoka kumapeto kwa mzere kuti asunge bata kwathunthu.
• *Ubwino: kuthekera kopanga utali wosaduka, kuchulukitsidwa kwa liwiro la kupanga, kuchepa kwa ntchito, komanso kugwiritsa ntchito bwino mphamvu ndi malo.Njirayi imalolanso kuphatikizika kwazinthu zingapo.Mchitidwewu uli ndi malire.Nthawi zambiri mtengo wa zida zopangira ndi wokwera, ndipo pakhoza kukhala malire a kukula ndi mawonekedwe.

Offline mankhwala extrusion:

• Mwanjira iyi, kuchiritsa kumathandizidwa ndi autoclave.Rabara yotentha imayendetsedwa ndi kufa kenako imawululidwa ndi nthunzi yothamanga kwambiri kuti ikwaniritse kutentha koyenera kwa vulcanizing.Kutentha kumasungidwa mpaka mankhwala atha.Njira yochiritsira isanayambe, mankhwala osachiritsika, opangidwa ndi chubu, amatetezedwa pa mandrel kuti akakamize mphira kuti ukhale ndi mawonekedwe ake panthawi yochiritsa.

Pulasitiki Extrusion Njira

Pulasitiki extrusion ndi njira yosinthira zinthu zapulasitiki kukhala zolimba kukhala zamadzimadzi ndikuzipanganso ngati zida zomalizidwa.Choyamba, ma pellets a pulasitiki amakoka kuchokera ku hopper kupita ku screw ya jekete.Pamene wonongayo ikuzungulira mozungulira, imanyamula, kusungunula, ndi kukakamiza pulasitiki.Kuchokera pamenepo, chinthu chosungunulacho chimakakamizika kupyolera muzitsulo zomwe zimachipanga kukhala gawo losiyana, kupanga magawo omwe amatha kutalika kosiyanasiyana.Panthawi ya extrusion, mapulasitiki amasintha kuchoka ku zolimba kupita kumadzi ndikubwereranso popanda kusiya zinthu zawo zosiyana.Chotsatira chake, zidutswa zowonongeka zimatha kugwedezeka ndikutulutsidwanso ndi kuwonongeka kochepa, kupanga extrusion njira yotchuka yochepetsera kapena kubwezeretsanso zinyalala zapulasitiki.