Introduction to Plastic Extrusion
ʻO ka extrusion plastik kekahi o nā kaʻina hana i hoʻohana nui ʻia i ka ʻoihana plastics, ʻoi aku no ka thermoplastics. E like me ka hoʻoheheʻe ʻana i ka injection, hoʻohana ʻia ka extrusion e hana i nā mea me nā profiles mau, e like me nā paipu, nā paipu, a me nā kiʻi puka. ʻO ka extrusion thermoplastic hou he mea hana ikaika no kahi kokoke i hoʻokahi haneli, e hiki ai i ka hana kiʻekiʻe o nā ʻāpana profile mau. Hoʻopili nā mea kūʻai aku me nā hui extrusion plastic e hoʻomohala i nā extrusions plastic maʻamau no kā lākou pono kikoʻī.
Hoʻopili kēia ʻatikala i nā kumu kumu o ka extrusion plastic, e wehewehe ana i ke ʻano o ke kaʻina hana, nā mea thermoplastic hiki ke hoʻokuʻu ʻia, he aha nā huahana i hana pinepine ʻia ma o ka extrusion plastic, a pehea ka hoʻohālikelike ʻana o ka extrusion plastic me ka extrusion alumini.
ʻO ke kaʻina hana hoʻoheheʻe plastik
No ka hoʻomaopopo ʻana i ke kaʻina hana extrusion plastic, he mea koʻikoʻi ia e ʻike i ke ʻano o ka extruder a pehea e hana ai. ʻO ka maʻamau, ʻo kahi extruder nā ʻāpana aʻe:
Hopper: Hoʻopaʻa i nā mea ʻilika maka.
Hānai i ka puʻu: Hānai i ka plastic mai ka pahu i loko o ka pahu.
Barrel Pumehana: Loaʻa i kahi wili i hoʻokele ʻia e kahi kaʻa, e hoʻolei i ka mea i ka make.
Pāpaʻa Breaker: Hoʻolako ʻia me kahi pale e kānana i nā mea a mālama i ke kaomi.
Hanai Paipu: Hoʻololi i ka mea hoʻoheheʻe ʻia mai ka pahu i ka make.
Make: Hoʻolike i ka mea i loko o ka ʻaoʻao makemake.
Pūnaehana hoʻoluʻu: E hōʻoia i ka paʻa paʻa ʻana o ka ʻāpana extruded.
Hoʻomaka ke kaʻina hana extrusion plastic ma ka hoʻopiha ʻana i ka hopper me nā mea maka paʻa, e like me nā pellets a i ʻole nā palapala. Hoʻopili ʻia ka mea i ka umekaumaha ma o ka ʻai ʻai i loko o ka pahu o ka extruder. I ke komo ʻana o ka mea i loko o ka pahu, ua hoʻomehana ʻia ma o nā wahi hoʻomehana. I ka manawa like, hoʻokuʻu ʻia ka mea i ka hopena make o ka barela e kahi wili hoʻihoʻi, i alakaʻi ʻia e kahi kaʻa. Hoʻonui ka wili a me ke kaomi i ka wela hou, no laila ʻaʻole pono ka wela o nā wahi hoʻomehana e like me ka wela o ka extrusion hope.
Hoʻokuʻu ka plastik i hoʻoheheʻe ʻia i ka barela ma o ka pale i hoʻoikaika ʻia e kahi pā haʻihaʻi, kahi e hoʻoneʻe ai i nā mea haumia a mālama i ke kaomi like ʻana i loko o ka barela. A laila hele ka mea i loko o ka paipu hānai i loko o kahi make maʻamau, nona ka puka e like me ka extruded profile makemake ʻia, e hana ana i ka extrusion plastic maʻamau.
Ke koi ʻia ka mea ma o ka make, lawe ia i ke ʻano o ka wehe ʻana o ka make, hoʻopau i ke kaʻina extrusion. Hoʻomaʻalili ʻia ka ʻaoʻao extruded i loko o kahi ʻauʻau wai a i ʻole ma ke ʻano o nā ʻōwili hoʻoluʻu e paʻa.
Pākīpika Extrusion
He kūpono ka extrusion plastik no nā mea thermoplastic like ʻole, hoʻomehana ʻia i ko lākou mau wahi heheʻe me ka ʻole o ka hoʻohaʻahaʻa ʻana i ka wela. ʻOkoʻa ka mahana extrusion ma muli o ka plastik kikoʻī. ʻO nā plastic extrusion maʻamau ka:
Polyethylene (PE): Extrudes ma waena o 400°C (ha'aha'a ha'aha'a) a me 600°C (ki'eki'e ki'eki'e).
Polystyrene (PS): ~450°C
Nylon: 450°C a 520°C
Polypropylene (PP): ~450°C
PVC: Ma waena o 350°C a me 380°C
I kekahi mau hihia, hiki ke hoʻokuʻu ʻia nā elastomers a i ʻole thermosetting plastics ma kahi o nā thermoplastics.
Nā noi o ka Extrusion Plastic
Hiki i nā hui extrusion plastik ke hana i nā ʻāpana ākea me nā ʻano kikoʻī. He kūpono nā ʻaoʻao extrusion plastik no nā paipu, nā ʻaoʻao puka, nā ʻāpana kaʻa, a me nā mea hou aku.
1. Paipu a me ka Paipu
ʻO nā paipu plastik a me nā paipu, i hana pinepine ʻia mai ka PVC a i ʻole nā thermoplastics ʻē aʻe, he mau noi extrusion plastic maʻamau ma muli o kā lākou ʻaoʻao cylindrical maʻalahi. ʻO kahi laʻana nā paipu hoʻoheheʻe extruded.
2. Uea Uea
Hāʻawi ka nui o nā thermoplastics i ka insulation uila maikaʻi loa a me ke kūpaʻa wela, e kūpono iā lākou no ka extruding insulation a me ka sheathing no nā uea a me nā kaula. Hoʻohana pū ʻia nā fluoropolymers no kēia kumu.
3. Puka a me ka puka aniani
ʻO nā puka aniani a me nā puka aniani, i hōʻike ʻia e ko lākou mau profile a me nā lōʻihi, kūpono no ka extrusion. He mea kaulana ʻo PVC no kēia noi a me nā mea pono hale ʻē aʻe e pili ana i nā profile extrusion plastic.
4. Makapo
Hiki ke hoʻokuʻu ʻia nā makapō, i loaʻa i nā ʻāpana like ʻole, mai nā thermoplastics. He pōkole nā profiles, i kekahi manawa me ka poʻe ʻaoʻao. Hoʻohana pinepine ʻia ka polystyrene no nā makapō lāʻau faux.
5. Wehewehe ʻana
Hoʻopuka pinepine nā hui extrusion plastik i nā huahana hoʻokaʻawale i ka wā, i hoʻolālā ʻia e kūpono pono a puni nā puka a me nā puka makani. He mea maʻamau ka Rubber no ka wehe ʻana i ka wā.
6. Nā Wipers Windshield and Squeegees
Hoʻokuʻu pinepine ʻia nā wipers windshield automotive. Hiki i ka plastic extruded ke lilo i mea synthetic rubber e like me EPDM, a i ʻole ka hui pū ʻana o ka synthetic a me ka rubber maoli. Hana like nā ʻōpala squeegee manual me nā wipers windshield.
Hoʻokuʻu ʻia ʻana me ka Aluminum Extrusion
Ma waho aʻe o nā thermoplastics, hiki ke hoʻopau ʻia ka alumini e hana i nā ʻāpana profile mau. ʻO nā pōmaikaʻi o ka extrusion alumini ka māmā, conductivity, a me ka recyclability. ʻO nā noi maʻamau no ka extrusion alumini e komo pū me nā kaola, nā paipu, nā uwea, nā paipu, nā pā, nā alahao, nā papa, a me nā mea wela.
ʻAʻole like me ka extrusion plastic, hiki i ka extrusion aluminika ke wela a i ʻole ke anu: hana ʻia ka extrusion wela ma waena o 350 ° C a me 500 ° C, ʻoiai e hana ʻia ka extrusion anu ma ke ana wela.
Ka hopena
ʻO ka extrusion plastik, ʻoi aku ka nui ma ka pōʻaiapili o ka China Plastic Pipe Extrusion Line, he ala maʻalahi a maikaʻi hoʻi no ka hana ʻana i nā ʻāpana profile mau. ʻO kona hiki ke mālama i nā ʻano thermoplastics a me kāna ākea ākea o nā noi he mea nui ia i ka ʻoihana hana plastic.
Ka manawa hoʻouna: Jul-16-2024