Maitiro ekuputira kuvhuvhuta akaomarara, uye kune zvakawanda zvinhu zvinokanganisa kunaka kwezvigadzirwa, izvo zvinowanzo sanganisira chimiro chezvigadzirwa, mashandiro ezvigadzirwa uye maitiro ekugadzirisa kuumba.Kunyangwe paine zvinhu zvakawanda zvinokanganisa kuita kwechigadzirwa, kana zvinodikanwa zvechigadzirwa uye mamiriro ekugadzirisa zvakatemwa, kunaka kwechigadzirwa kunogona kuvandudzwa nekuchinja zvinhu zvinofurira, izvo zvinogona kuzadzisa chinangwa chekudzikisa kushandiswa kwezvinhu, kuderedza kugadzirwa. nguva uye optimizing chigadzirwa kuita.
1、 Rudzi rwezvinhu
Izvo zvakasiyana zvivakwa uye mhando dze resin mbishi zvinhu zvinozoita kuti kugadzirisa uye kuumba tekinoroji nemidziyo ichinje.Iyo yekunyunguduka indekisi, mamorekuru huremu uye rheological zvimiro zve resin mbishi zvinhu zvinokanganisa kuumbwa kwezvigadzirwa, kunyanya muchikamu cheextrusion chebillet, kunyungudika kwemvura yezvinhu zvakasvibirira kuchaita kuti billet ive nyore kugadzira sag phenomenon, inotungamira kumadziro. Ukobvu hwezvigadzirwa zvakatetepa uye zvisina kuenzana kugovera.
2, Chimiro chechigadzirwa
Sezvo kutaridzika kwezvibodzwa zvekuumba kunowedzera uye zvakanyanya kuomarara, zvichikonzera kuvhuvhuta zvigadzirwa panzvimbo yega yega yeyero yekuwedzera yekuputika kwakasiyana.Iyo convex mupendero, mubato, kona uye zvimwe zvinzvimbo zvechigadzirwa nekuda kwekusiyana kwechimiro chakakura, ukobvu hwemadziro echigadzirwa hunofanirwa kuve hutete, saka mukuita kuvhuvhuta kuumba kuwedzera chikamu ichi chebillet madziro ukobvu.Kuonekwa kwezvigadzirwa zvemaindasitiri zvakanyanya kuomarara, zvine makona mazhinji uye convex edges.Huyero yekufuridza yezvikamu izvi yakakura kupfuura yezvimwe zvikamu zvakati sandara, uye ukobvu hwemadziro hwakatetepa, saka kugovaniswa kwehupamhi hwemaburi ekuvhuvhuta zvigadzirwa hazvina kufanana.
3, Mold kuwedzera uye vertical kuwedzera kweparison
Imwe yeakakosha malink mune hollow blow molding nzira ndeye extrusion kuumbwa kweiyo isina chinhu.Saizi uye kukora kwechinhu chisina chinhu chinotarisisa ukuru nekukora kwemadziro echigadzirwa.Chiitiko chekunyungudutsa vertical yekuwedzera uye mold kuwedzera ichagadzirwa mukugadzira maitiro ebillet.Kuwedzera kwakamira kwebillet ndiko mhedzisiro yesimba rayo, izvo zvinoita kuti urefu hwebillet huwedzere uye kuwanda uye dhayamita kuderera.Kana iyo yakasvibirira ichipisa uye yakanyungudutswa ne extruder, iyo isina mutsara viscoelastic deformation inoitika kana chinhu chacho chichibudiswa nepamusoro, izvo zvinoita kuti urefu hwebillet hupfupike uye hupamhi nehupamhi hunowedzera.Mukuita extrusion uye kuvhuvhuta kuumbwa, izvo zviviri zviitiko zve vertical extension uye mold yekuwedzera pesvedzero panguva imwe chete, zvichiwedzera kuoma kwekuputira kuvhuvhuta, asi zvakare kuita kuti chigadzirwa ukobvu kugovera hakuna kufanana.
4, Tembiricha yekugadzirisa
HDPE yekugadzirisa tembiricha inowanzo 160 ~ 210 ℃.Kugadzirisa tembiricha yakanyanya, ichaita kuti mhando yebillet sag phenomenon ionekwe, kugovera kwemadziro emadziro hakusi yunifomu, asi pamusoro pechigadzirwa chichava chakatsetseka;Kupisa kwemusoro wekufa kunofanira kuva pedyo sezvinobvira kune kutonhora kwechikamu chekupisa.Kupisa kwemuromo wemukombe kunofanira kunge kwakadzika kudarika iyo yemusoro wekufa, iyo inogona kuderedza simba rekuwedzera kwe mold ye parison.
5, Mwero we extrusion
Nekuwedzera kwekuwedzera kwekukurumidza, iyo yakakura kuwedzera kwe mold ye billet, hupamhi hwebillet huchawedzera.Kana iyo extrusion speed yakanyanyisa, iyo yakareba iyo billet inobatwa nehuremu hwayo, iyo yakanyanya kuoma iyo sag phenomenon ye billet.Extrusion speed inokurumidza, ichaita kuti mhando ye billet shark ganda chiitiko, zvakakomba zvinotungamirira kune rudzi rwe billet kuputika.Iyo extrusion yekumhanyisa ichakanganiswa nenguva yekuvhuvhuta, kukurumidza kukurumidza kunoderedza nguva yekuvhuvhuta, inogona kuita kuti chigadzirwa chisakwanise kuumbwa.Iyo extrusion yekumhanyisa inokanganisa pamusoro uye madziro ukobvu hwechigadzirwa, saka iyo extrusion yekumhanyisa renji inoda kugadziridzwa nguva dzose.
6, Ratio yekuputika kusvika pakuwedzera
Kunyunguduka kwemukati nekunze kwekunze kwechisina chinhu kuchaputika uye kuwedzerwa nokukurumidza muhutu uye pedyo nechepamusoro pehuputi kusvikira yatonhodzwa uye yakaumbwa.Iyo isina kuvharwa ine dhayamita yakakura mukati me mold ichaiswa kune zvakanyanya kushushikana (chiyero pakati pedhayamita ye mold ine hukuru hukuru uye dhayamita yechinhu chisina chinhu panguva ino ndeyekuvhuvhuta reshiyo).Kudonha kwemhepo kuri nyore kuitika panguva yekuvhuvhuta uye kuzvimba kwechimiro chakakura chebhodhoro, zvichikonzera kutadza kuvhuvhuta nekuumba.Kuonekwa kwechigadzirwa kunokanganisa zvakanyanya chiyero chekuvhuvhuta panguva yekuvhuvhuta.Paunenge uchifuridza zvigadzirwa zvine chimiro chisina kujairika, chiyero chekuvhuvhuta hachifanirwe kunge chakakura, kana zvisina kudaro zviri nyore kutungamira kunyunguduka kuputika.
7, Kuvhuvhuta kumanikidza uye nguva
Mukati mekugadzira kuvhuvhuta, iyo gasi yakamanikidzwa inogona kuita kuti billet ivhuvhute uye iite uye inonamatira mukati me mold.Iko kuumba kukurumidza kwebillet kunotarirwa nekumanikidzwa kwegesi.Kana iyo gasi yekumanikidza yakawandisa, iyo deformation yekumhanyisa kwechisina inokurumidza, izvo zvinozoita kuti ndege ive chikamu chechivharo nekukurumidza pedyo nemukati me mold, kuitira kuti tembiricha isina chinhu ideredzwe pasi pesimba remuumbi. , uye iyo isina chinhu inoumbwa zvishoma nezvishoma, iyo isingagoni kuramba ichikanganisa.Panguva ino, nekuda kwekusiyana kwechimiro chakakura, chikamu chekona chebillet hachina kusungirirwa kune mold, uye deformation inoenderera mberi, zvichiita kuti kugoverwa kusina kuenzana kwemadziro emadziro echigadzirwa.Kana iyo gasi kudzvinyirira kuri kudiki, kuumbwa kwechigadzirwa kwakaoma, uye nekuti kumanikidza kubata kudzvinyirira kuri kudiki, iyo billet inoderera uye haigone kuwana zvigadzirwa zviri nani, saka zvinodikanwa kudzora gasi kudzvinyirira zvine musoro paunenge uchivhuvhuta.Kufuridza kudzvanywa kwezvigadzirwa zvisina makomba kunowanzo kudzorwa mu 0.2 ~ 1 MPa.Nguva yekuvhuvhuta inonyanya kutsanangurwa nekuvhuvhuta kuumba nguva, kumanikidza kubata nguva uye kutonhora nguva yechigadzirwa.Kana nguva yekufuridza ipfupi, ichaita kuti chigadzirwa chinoputika nguva yekuumba ipfupi, hapana kukwana kumanikidza kubata uye kutonhora nguva, iyo billet ichave pachena inonyura mukati, iyo nzvimbo inova yakaoma, inokanganisa kutaridzika kwechigadzirwa, kunyangwe haigone. beform;Kana nguva yekuputika yakanyanyisa, chigadzirwa chinogona kuva nechitarisiko chakanaka, asi chichawedzera nguva yekugadzira.
8, Mold tembiricha uye kutonhora nguva
Iyo incision yekufa inowanzo gadzirwa nesimbi zvigadzirwa zvine kuoma kukuru, saka inoda kuve neyakanakisa kutonhora maitiro.Iyo tembiricha ye mold yakanyanya kuderera ichaita kuti mold icheke kutonhora nekukurumidza, pasina ductility;Iyo tembiricha yakakwira ichaita kuti billet kutonhora hakuna kukwana, iyo mold yekucheka ichave yakatetepa, chigadzirwa shrinkage phenomenon iri pachena kana kuchitonhora, zvichiita kuti chigadzirwa chakakomba deformation.Nguva yekutonhora yakareba, pesvedzero yekushisa kwe mold pachigadzirwa idiki, shrinkage haisi pachena;Nguva yekutonhora ipfupi, iyo billet ichave neyakajeka shrinkage phenomenon, chigadzirwa chepamusoro chichava chakashata, saka zvinodikanwa kudzora zvine hungwaru tembiricha yekuumbwa uye kutonhora nguva.
9、Kumhanya kwesiruu
Iyo yekumhanyisa kwe screw ichakanganisa kunaka kwebillet uye kugona kweiyo extruder.Saizi yekumhanyisa screw inoganhurwa neyakagadzirwa zvinhu, chimiro chechigadzirwa, saizi uye chimiro chescrew.Kana kukurumidza kutenderera kwakaderera, kushanda kwekushanda kweextruder zviri pachena kuderedzwa, uye nguva yakatambanudzwa yebillet yakareba, iyo inotungamirira kune kusaenzana kugoverwa kwemadziro emadziro echigadzirwa.Kuwedzera kukurumidza kutenderera kunoderedza nguva yekushanda uye kunowedzera kushandiswa kwesimba.Panguva imwecheteyo, kuwedzera kwekumhanyisa kwe screw kunogona kuvandudza shear rate ye screw kune yakaomeswa zvinhu uye kugadzirisa kutaridzika kwechigadzirwa.Asi iyo screw speed haifanire kunge yakanyanya kukwirira, nekuti kumhanya kwakanyanyisa kuchaita kuti mbishi mumusoro uye muromo wekombe ugare wakapfupika, tembiricha yekugovera haina yunifomu, ukobvu hwemadziro hwebillet hunokanganisa, uye zvino kukanganisa kutaridzika kwechigadzirwa.Kunyanya kutenderera kumhanya kuchawedzerawo simba rekukwenya, kuburitsa kupisa kwakawanda kunogona kukonzera kuderedzwa kwezvinhu zvakabikwa, zvinogonawo kuratidzika kunyungudika kuputika chiitiko.
Nguva yekutumira: Nov-19-2022