Twin Screw Extruder: Nā ʻano, pehea e hana ai a pehea e koho ai

Na kaHui Hana Hana Nanhaiya— Extrusion Machinery, Zhoushan · Nānā ʻia no ka pololei o ka hale hana · ~ 10 min heluhelu

ʻO ka twin screw extruder ka mīkini maʻalahi loa i ka hana plastics. ʻElua wili ma kahi o hoʻokahi, ʻoi aku ka maikaʻi o ka lawe ʻana, ʻoi aku ka maikaʻi o ka hui ʻana a ʻoi aku ka paʻa o ka mana ma luna o ka mea e hiki mai ana i ka mea ma ka pahu - ʻo ia ke kumu e lanakila ai nā mīkini māhoe māhoe i ka extrusion PVC, hoʻohui a me ka pelletizing. Akā ʻo "twin screw extruder" e uhi ana i nā mīkini ʻokoʻa. Hōʻike kēia alakaʻi i ke ʻano o kā lākou hana, nā ʻāpana conical-versus-parallel a me co-versus-counter-rotating e hoʻoholo i ka mea āu e pono ai, ka nui kumu hoʻohālike maoli a me nā huahana, a pehea e kuhikuhi ai i ka mīkini kūpono.

Pehea ka hana ana o ka mea hoʻokuke māhoe māhoe

Hoʻokomo ʻia nā mea i ka wehe ʻana o ka hānai, lawe ʻia i mua e ʻelua mau wiliwili meshing, kaomi ʻia a hoʻoheheʻe ʻia ma o ka hui ʻana o ka wela a me ka shear mechanical, homogenised, a laila paʻi ʻia ma o ka make ma ke kaomi mau. Ma muli o ka hoʻopili ʻana o nā wili, hoʻololi maikaʻi ʻia nā mea mai kekahi wili a i kekahi ma mua o ka huki wale ʻana i ka paia - e hāʻawi ana i nā mīkini ʻulu māhoe ko lākou ʻano paʻa a me ka hui pū ʻana.

Hoʻokaʻawale ʻia ka pahu i nā ʻāpana mehana a me ka hoʻoluʻu no laila e noho ana kēlā me kēia pae i ka mahana kūpono, a nui nā mīkini e hoʻokomo i kahi puka makani e huki ai i ka makū a me nā volatiles mai ka heheʻe ma mua o ka make. ʻO ke kaʻina kumu:

1. Hanai- ʻo ka umekaumaha a i ʻole kahi mea hānai koi (crammer) e hoʻolei i nā mea i loko o ka ʻāpana hānai; ʻO ka hānai koi ʻana he mea nui ia no nā pauka haʻahaʻa haʻahaʻa e like me PVC dry-blend.
2. Hehee a me ka ho'oemi- hoʻoheheʻe ka wela mai ka barela a me ka ʻoki ʻana mai nā ʻūlū a hoʻopaʻa i ka mea, hoʻokuʻu aku i ka ea.
3. Ka hui ʻana a me ka hoʻokuʻu ʻana- ka hui ʻana i nā mea e hoʻopuehu i nā mea hoʻopihapiha a me nā mea hoʻohui; ʻO nā ʻāpana hoʻoheheʻe e hoʻoneʻe i ka makū a me nā volatiles.
4. Ka ana a me ka hoʻokuʻu ʻana- kūkulu ʻia kahi kaomi paʻa a hoʻoheheʻe ʻia ka heheʻe like ʻole ma ka make.

māhoe māhoe vs hoʻokahi screw extruder

A mea hoʻokuke hoʻokahi screwʻoi aku ka maʻalahi a ʻoi aku ka maikaʻi, a ʻoi aku ka maikaʻi ma kāna hana: ka paila ʻana i kahi mea i hoʻohālikelike mua ʻia i nā huahana kiʻekiʻe. ʻO ka mīkini māhoe māhoe ke koho i ka wā e pono ai ka hana i ka hui ʻana, ka hoʻokuʻu ʻana a i ʻole ka lawelawe ʻana i nā meaʻai paʻakikī.

Conical vs parallel mea hoʻokuke māhoe māhoe

ʻO kēia ka hoʻoholo maoli mua. He māhoe māhoe lāua ʻelua, ʻelua intermesh - ʻo ka ʻokoʻa ka geometry screw, a hoʻoholo i ka mea maikaʻi o ka mīkini.

ʻO ke kānāwai pōkole: inā ka extrudateʻo iakāu huahana (he paipu, he papa, he profile), e nānā i kahiconical mea hoʻokuke māhoe māhoe. Inā ʻoe e hana ana i nā pellets a i ʻole e hoʻopuehu i kahi pūʻolo hoʻohui koi, e nānā i ka parallel - e ʻike i kā mākoubarela māhoe māhoe likealakai.

ʻO ka hoʻololi like ʻana me ka hoʻohuli kūʻē

I loko o ka ʻohana parallel aia ka lua o ka mahele, a he mea nui ia e like me ka conical-versus-parallel. Huli nā wili hui pū i ka ʻaoʻao hoʻokahi a hāʻawi i ka hui ʻana kiʻekiʻe-kiʻekiʻe, kiʻekiʻe-wikiwiki - ka maʻamau no ka hui ʻana a me ka masterbatch. Huli nā wili hoʻololi i nā ʻaoʻao ʻē aʻe me ka hāʻawi ʻana i ka maʻalahi, e like me ka pahū, kūpono i ka PVC wela a me nā ukana hoʻopihapiha kiʻekiʻe loa.

Nā hiʻohiʻona extruder māhoe a me nā mea hoʻopuka

Hōʻike ʻia ka nui o ka mīkini e ke anawaena screw - nā anawaena hānai/make no conical, hoʻokahi anawaena no ka like. Eia ka palapala ʻāina nui-a-puka no kā mākou hui conical, e uhi ana i ka hapa nui o ka paipu PVC a me ka hana profile.

Hoʻopili pū ʻia ka hoʻopuka ʻana i ka hoʻokumu ʻana, ka hoʻolālā wili a me ka hiki ke hoʻohaʻahaʻa, no laila e mālama i kēia mau mea ma ke ʻano he mau pūʻali ma mua o ka hōʻoiaʻiʻo. No nā mīkini like, hoʻonohonoho nui ʻia ka huahana e ke anawaena a me ka wikiwiki o ka screw, a ua kūkulu ʻia ka hoʻonohonoho ʻana i ka meaʻai.

He aha nā twin screw extruders i hoʻohana ʻia no

• PVC paipu, profile & papa- ke noi conical maʻamau.
• WPC- decking, pā pā a me nā ʻaoʻao.
• Huihui & masterbatch- hoʻopuehu i nā puaʻa, nā mea hoʻohui a me nā mea hoʻopihapiha.
• Granulation & pelletizing— ike i ko makoulaina pelletizing māhoe māhoe māhoe.
• PS huāhuā- ka pepa pahu a me ka hana papa.
• Hana hou- ka hana hou ʻana i nā meaʻai i hoʻopiha ʻia a i ʻole nā ​​​​mea ʻai i haumia i loko o nā pellets hiki ke hoʻohana ʻia.

Pehea e koho ai i ka mea hoʻokuke māhoe māhoe

1. E wehewehe i ka huahana.Kuhi pololei (pipe, profile, board) kuhikuhi i conical; ʻO nā pellets a i ʻole nā ​​​​huihui e kuhikuhi ana i ka parallel.
2. E hoʻonohonoho i ka puka.E hoʻohālikelike i ka kg/h i ka papa mīkini me ka lumi poʻo - ʻo ka holo ʻana i waho e pōkole ke ola o nā mea.
3. E nānā i ka meaʻai.Pono ka pauda i ka hānai ikaika; ʻO ka mea maʻemaʻe a i ʻole nā ​​​​mea paʻakikī e pono ai ka hoʻokuʻu ʻana.
4. E loiloi i ka abrasion.ʻO ka CaCO₃ kiʻekiʻe, ka pulupulu lāʻau a i ʻole ke aniani aniani, pono ʻoe e hoʻomaikaʻi i ka ʻili a me ka pahu.
5. E hōʻoia i ke kūpono.Inā hoʻololi ʻoe i nā ʻāpana ma mua o ka mīkini, e hoʻouna i ka brand extruder/model a i ʻole kahi kaha kiʻi.

Hoʻolālā a kūkulu ʻo Nanhaiya i nā hale ʻelua i loko o ka hale, no laila hiki ke hoʻohālikelike ʻia ka mīkini me kāu huahana - e ʻike i kā mākou pihamīkini extruder plasticlaula amea hoʻokuke māhoe māhoenā hiʻohiʻona.

ʻO ka wili a me ka pahu: he aha ka mea e ʻaʻahu ai

ʻO kēlā me kēia mīkini āu e kūʻai ai, kawili a me ka pahuʻo ia ka ʻāpana i pau a me ka ʻāpana e pili nui i ka maikaʻi heheʻe, hoʻopuka a me ke kumukūʻai holo. ʻO ia hoʻi ka mea āu e hoʻololi ai i ka wā e ola ana ka mīkini - ʻo ia ka mea e pono ai ka hoʻomaʻamaʻa ʻana i ke kila a me ka ʻili o ke kino.

Na Nanhaiya mīkini wili a me nā barela mai 38CrMoAlA nitrided kila, W6Mo5Cr4V2 a i ʻole HIP pauka kila, a hoʻopuʻi i ka tungsten-hoʻohui paʻa a puni ka ʻāpana lole maʻalahi e hiki ai.62 HRCi loko o ka lua - e kū'ē i kahi 58 HRC maʻamau - me kahi papa huila 2.5–3 mm. No ke koho ma waena o nā ʻili, e ʻike i kā mākou hoʻohālikelike o abimetallic vs nitrided screw barrel; no ka mea conical pono'ī, kā mākouconical twin screw barrel guide. Loaʻa nā ʻāpana lole ma o kā mākouʻāpana ʻāpanalaula.

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