ʻO ka hoʻokuʻu ʻia ʻana o ka paipu, hose a me ka paipu he kaʻina hana paʻa no ka hoʻololi ʻana i kahi mea wela thermoplastic i kahi huahana annular i hoʻopau ʻia a kokoke paha.ʻO ka mea maʻamau ka mea maʻamau i ke ʻano o nā pellet plastik a i ʻole ka pauka.Ka hoohuli ana i wahi ma ka hana ana i ka homogeneous molten mass i loko o ka extruder a me ka hooikaika ia ma lalo o ke kaomi ma o ka extrusion make orifice e wehewehe ana i ke kinona o ka huahana kea pauku.Hoʻomaʻalili ʻia ka mea i hana ʻia, a i ʻole extrudate, a hoʻokaʻawale ʻia mai ka puka make ma ke ʻano kaohi.Hiki ke ʻeha ʻia ka extrudate ma kahi spool, ʻoki ʻia i kahi lōʻihi i ʻōlelo ʻia, a kuhikuhi ʻia paha i kahi kaʻina hana ʻē aʻe.
ʻO ka hoʻokaʻawale ʻana me ka hoʻoheheʻe ʻana a i ʻole ka hoʻoheheʻe ʻana i ka puhi, ʻo ia nā kaʻina cyclic, extrusion kahi kaʻina hana paʻa.Hāʻawi kēia ʻano paʻa i kekahi mau pono a me nā pilikia e like me ke kaʻina hana.He lōʻihi loa nā huahana extruded a hoʻomau, a loaʻa i kahi ʻāpana keʻa e maʻamau mau e pili ana i ke axis a i ʻole ke kuhikuhi o ka hana.ʻO nā huahana i hoʻoheheʻe ʻia i ka injection he mau mea ʻokoʻa me nā ʻāpana keʻa like ʻole i kēlā me kēia axis.ʻO ka ʻoiaʻiʻo o ka extrusion o ka paipu, hose a me ka paipu he kaʻina hana paʻa e kūkākūkā ʻia ma nā wahi he nui o kēia ʻatikala.
Mea lako
Hoʻokaʻawale pinepine ʻia nā ʻāpana nui o ka paipu, hose, a i ʻole ka ʻōnaehana extruder paipu i nā ʻāpana i luna o ka extruder, ka extruder ponoʻī, a me nā mea i lalo o ka extruder.ʻO nā mea i luna ka mea hana resin no ka lawe ʻana i nā mea maka i ka extruder, a me nā lako hoʻomaʻamaʻa resin e hoʻomaʻamaʻa mua i ka resin, a i ʻole e hoʻomalu i ka makū o ka resin ma mua o ke komo ʻana i ka ʻai extruder.ʻO nā ʻāpana o lalo he kānana resin hoʻoheheʻe ʻia a i ʻole ka mea hoʻololi pale, ka hui make extrusion, ka pahu kupapaʻu a i ʻole ka pahu pahu, nā mea ana huahana, ka mea hoʻoponopono wikiwiki laina extrusion ma ke ʻano o ka puller kāʻei a i ʻole ka nip roll set, a hope loa kahi huahana. mea ʻoki ʻoki a i ʻole mea wili.Aia kekahi mau kaʻina hana extrusion e lawe pololei i ka huahana extruded i loko o kahi kaʻina hana i loko o ka laina no ka hoʻohui ʻana i kahi wili hoʻoikaika a i ʻole no ka hoʻohui ʻana i nā uhi a i ʻole nā papa resin.
Nā mea waiwai
Hiki ke hoʻohana ʻia nā ʻenehana extrusion e hana i ka hapa nui o nā thermoplastics a me kekahi mau plastic thermoset.ʻO nā resins i hoʻokuʻu pinepine ʻia no ka paipu, hose a me nā huahana paipu me ka polyethylene kiʻekiʻe a me ka haʻahaʻa haʻahaʻa, polypropylene, polyurethane, polystyrene, fluoropolymers, PTFE, polyester, a me PVC hikiwawe a paʻa.ʻO kahi hiʻohiʻona e hoʻokaʻawale pinepine i nā resins extruded mai nā resins injection-molded ʻo ia ka hoʻoheheʻe viscosity o ka plastic i nā mahana hana maʻamau.ʻO nā plastic extruded pinepine i ka viscosity hoʻoheheʻe kiʻekiʻe, kahi e hiki ai i ka extrudate ke mālama i ke ʻano i hāʻawi ʻia iā ia e ka make ʻoiai ka extrudate aia i nā pae quenching.Hiki ke hoʻohana ʻia nā mea hoʻohui he nui i ka wā extrusion e hoʻomaikaʻi i nā ʻano hana o ka polymer a i ʻole e hoʻololi i nā waiwai huahana.ʻO ia mau mea hoʻohui me nā lubricants, thermal stabilizers, antioxidants, radiopacifying agents, a me nā kala.
Nā ʻāpana hana
ʻO nā palena koʻikoʻi i ka hoʻoponopono extrusion e like me nā kaʻina hana hoʻoheheʻe injection.ʻO ka wela o ka resin, ke kaomi resin, ka ʻoluʻolu o ka resin, ka wikiwiki o ka screw, a me ka amperage kaʻa uila e hoʻomalu ʻia a nānā ʻia e hāʻawi i ka hoʻoheheʻe homogeneous i ka helu volumetric kaohi.Hoʻomalu ʻia a nānā ʻia paha ka mahana wela a me ka wikiwiki o ka huki ʻana o ka extrudate e hāʻawi i ka nui o ka huahana.Hiki ke lawe ʻia nā ana ana, me ka hoʻohana ʻana i nā ʻano like ʻole o ka extrudate i ka wā i hana ʻia ai.ʻOkoʻa i ka hoʻoheheʻe ʻana, hiki ke hoʻololi i ka extrusion i ka nui o ka huahana hope me ka ʻole o ka hoʻololi ʻana i ka mea hana make.Hoʻopaʻa ʻia nā ʻae hana extrusion maʻamau a i ʻole ka paʻa ʻana o ke kaʻina hana i loko o 1% o ka waiwai i ana ʻia.ʻOiai e pili ana kēia mau kaʻina hana i nā kūlana kūlana paʻa, ʻo kēlā me kēia hana e hiki ke hoʻopaʻa i kekahi ʻāpana a i ʻole ke kūlana e pono i ke kaʻina hana.
Ka manawa hoʻouna: Mei-09-2017