urongwa

Mune Extrusion Blow Molding (EBM), mapurasitiki anonyungudutswa uye anowedzerwa mu hollow tube (parison). Iyi parison inozobatwa nekuivhara mukati mekuumbwa kwesimbi yakaumbwa. Mhepo inobva yaridzirwa muparoni, ichichiisa muchimiro chehombodo hari, mudziyo, kana chikamu. Mushure mekunge mapurasitiki apera kunyatsokwana, kuumbwa kunovhurwa uye chikamu chacho chobva chakandwa.

Maitiro ejekiseni blowing kuumba (IBM) anoshandiswa kugadzirwa kweakadzika girazi uye zvinhu zvepurasitiki muhukuru. Mune IBM maitiro, iyo polymer jekiseni rakaumbwa pamusoro pini yepini; ipapo pini yepakati inotenderedzwa kune yekuvhuvhu yekuumba station kuti iwedzerwe uye kupora. Uku ndiko kushoma-kunoshandiswa kwezve zvitatu kurodza kuumba matanho, uye kazhinji anoshandiswa kugadzira madiki ekurapa uye kamwechete anoshanda mabhodhoro. Maitiro acho akapatsanurwa kuita matatu matanho: jekiseni, kuputika uye ejection.

Ichi chinyorwa chinotsanangura setup yekumuyesa mune yeoretical modhiyo yekuyera kukanganiswa kwemhepo iri kubuda, uye kuongorora mutengo wemhepo yakamanikidzwa kupesana neiyo inotonhorera coeff kukwana kuwana.

Mukupusha kuumba iyo yekupusha kudzvinyirira kwakanyanya kukosha. Chinyorwa chinobva kuYunivhesiti yeAachen ine theoretical model pane kukosha kwekumanikidza mukushanda kweiyo geometry yepasi.

Injection kuumba (jekiseni kuumba muUSA) imhando yekugadzira yekugadzira zvikamu nekupinza zvinhu muforoma. Iningion Kuumba kunogona kuitwa nehuwandu hwezvinhu, kusanganisira simbi, (iyo (iyo maitiro anoitwa diecasting), magirazi, elastomers, confection, uye inowanzoitwa thermoplastic uye thermosetting ma polymers.

Iyi ine nzira mbiri dzakasiyana, dzinoti Imwe-nhanho uye maviri-danho maitiro. Imwe-nhanho maitiro akatsemurwa zvakare kuita matatu-chiteshi uye 3-chiteshi michina Mune maviri-danho jekiseni kutambanudza kuputika kuumba (ISBM) maitiro, ipurasitiki inotanga kuumbwa kuita "preform" uchishandisa jekiseni kuumba maitiro. Aya maumbirwo anogadzirwa nemitsipa yemabhodhoro, kusanganisira tambo (iyo "yekupedzisa") kune rimwe divi. Aya ma preform akaiswa mumapepa, uye anodyiswa gare gare (mushure mekunonoka) kuita reheat yakatambanudzwa yekuvhuvhuta yekuumba muchina. Mukuita kweISB, preforms inodziya (kazhinji vachishandisa infrared heater) pamusoro peyavo tembiricha yekuchinja tembiricha, vobva vafuratidzwa vachishandisa yakanyanya-kumanikidza mweya mumabhodhoro vachishandisa simbi yekuvhuvhuta mafuru. Iyo preform inogara yakatambanudzwa netsvimbo yepakati sechikamu cheichi chiitiko.

Kureketa kuseri kwekuvhuvhuta kwemuchina wekuumba michina kunogona kukonzera kuwanda kweblue pazita, nekuda kwebhodhoro shrinkage. Kune akasiyana maitiro ekuvandudza / kugadzirisa aya matambudziko.