Kugadzira Maitiro ePlastiki Coating

Zvitsauko zvakapfuura zvakapa tsananguro yekufanana kuripo pakati pekushandisa dip coating ne dip molding. Chitsauko chino chichanyatsoongorora maitiro akadzama anobatanidzwa mukugadzirwa kwepurasitiki.

Plastic Coating Pretreatment Process

Danho rekutanga kurapwa rinoita basa rakakosha mukuona kushandiswa kwakaringana kweplastic coating pane simbi substrate. Matanho aya akakosha kune ese ari maviri maitiro. Iyo pre-kurapa maitiro ekuputira dip yakanyanya kuomesesa kana ichienzaniswa nekuumbwa kwedhip, sezvo ichisanganisira kupfekedza zvachose iyo polymer pasimbi inoshandiswa seforoma. Matanho akabatanidzwa anotsanangurwa pazasi:

Danho 1: Bvisa tsvina yepamusoro

Kusachena kunogona kukanganisa kunamatira kwepolymer kune mold kana chikamu. Vanogadzira nzvimbo dzisina njodzi umo kukuvara kunogona kutanga uye kupararira.

Degreasing:

Oiri uye girisi zviripo pane simbi substrate pamusoro kuita setsvina, iyo inoderedza kusamira kwemvura uye inotadzisa yakajairika kunamatira uye kuiswa kwepurasitiki yekuputira. Girasi rinogona kubviswa kuburikidza nealkali washing, pickling kana kupisa degreasing process.

Kukurura:

Kune zvikamu zvakambovharwa, nyatsobvisa jasi rekare usati waisa jasi idzva.

Danho rechipiri: Shandura zvimiro zve substrate

Mukuwedzera pakuchenesa pamusoro, mamwe maitiro anogona kupiwa kuti abudise zvinodiwa. Aya maitiro anogona kubatsira mukunyudza pachayo kana mukushandiswa kwekupedzisira kwechigadzirwa.

Phosphating:

Phosphating, inozivikanwawo se phosphate conversion, ndiyo maitiro ekuisa chidimbu chephosphate pane substrate isati yaputirwa nepurasitiki. Iyi phosphating layer inokwidziridza corrosion kuramba kana paine chero kukuvara kusingadzivisike kune epurasitiki coating. Iwo anowanzo shandiswa phosphating layers ye dip coating anosanganisira zinc phosphate, iron phosphate, uye phosphate triester.

Shot peening:

Kuita kwepfuti kudongorera kunosanganisira kukanganisa pamusoro nezvikamu zvakatenderera, zvichikonzera nzvimbo inotonhora-yapera. Izvi zvinokonzeresa kudzvanyirira kwasara kushushikana pamusoro pematrix kuti iwedzere simba rayo uye kudzikisa chero iripo yasara kushushikana. Kuvapo kwekunetseka kwakasara kunogona kukonzera kuumbwa kwe microcracks panguva dzinotevera maitiro.

Sandblasting:

Sandblasting induces micropores pane substrate pamusoro, ichichinja uye ichiwedzera nzvimbo yayo yekunamatira zvirinani zvemaprimers, base coatings, uye mapurasitiki ekuputira. Mhando dzakajairwa dzekuita jecha, jecha resimbi, girazi bead sandblasting, plastiki bead sandblasting, pakati pevamwe.

Deembrittlement:

Deembrittlement inzira yekurapa kupisa yakanangana nekubvisa haidrojeni inopinda mukati mesimbi matrix, sezvo kuvepo kwehydrogen kunowedzera mukana wekuputsika kwebrittle pasi pekunetsekana. Kuunzwa kwehydrogen yakapararira kunoitika panguva dzekutanga nhanho dzekutanga, senge pickling uye phosphate application.

Danho rechitatu: Kuvandudza kunaka kwepurasitiki yekuputira

Isa zvinotevera pamusoro pe substrate kuti uvandudze kunaka kwekuputira

Primer:

Iyo primer inoshanda seyegadziriro yejasi layer kuti iwedzere kunamatira pakati pe substrate nepurasitiki yekuputira. Inopawo kuwedzera kudzivirira kune yakavharwa substrate.

Base coating:

Base coatings mamwe machira anopa akakosha zvivakwa kune akapedzwa zvikamu, seUV uye kukwenya kuramba. Iyo yekuvharisa yepasi kazhinji haishandiswe yega uye inowanzoita basa rayo kana yasanganiswa neiyo huru yepurasitiki yekupotera.

Kune iyo dip molding process, inoburitsa mumiriri inoiswa kana kugadzika pamusoro peiyo mold kubatsira kubvisa iyo yakaumbwa chikamu. Silica gel uye zvachose polytetrafluoroethylene (PTFE) ndiwo anonyanya kushandiswa kuburitsa vamiririri. Kamwe danho rekutanga rekurapa rapera, mold inoomeswa kuti ibvise unyoro. Kusarira mwando kunokonzeresa kuwedzera kubva pakupisa kunounzwa mumatanho anotevera. Izvi zvinotungamira pakuumbwa kwevoids kana mabubbles.

Kugadzira Maitiro ePlastiki Coating

Danho rechina: Pre-kupisa mold

Iyo mold inoiswa pasi pekudziya kunodzorwa muchoto pane yakafanotemerwa tembiricha uye nguva, umo tembiricha yekudziya inoshanda seimwe yeakakosha ma paramita anotonga coating ukobvu hwezvikamu. Hunhu hwekugovera kupisa hunotsamira pane zvese mold dhizaini uye kuyerera kwemhepo mukati mevheni. Kuve nechokwadi chekudziya kweuniform mold kwakakosha kuti uwane inopindirana coating ukobvu mukati mechinhu chose.

Danho 5: Nyura mold

Nyura iyo inopisa mold zvishoma kana zvachose mumvura yepolymer ( PVC plastisol kana PE plastisol). Iyo polymer inonamatira pamusoro peiyo mold. Iyo yekunze dimension ye mold inzvimbo yemukati yechikamu. Nguva yekugara, kana nguva iyo mold inonyudzwa mumvura yepolymer, zvakare imwe yemaparamita inotaridza iyo yekupedzisira yekuvharira ukobvu hwechikamu. Nguva yakareba yekugara inoburitsa coating yakakora. Iko kumhanya kwekunyudza uye kubuda kubva mukuumbwa zvakare yakakosha parameter yekufunga nezvayo, zvichienderana nehunhu hwepolymer yemvura inoshandiswa. Aya mareti anotemerwa nemugadziri panguva ye optimization chikamu. Sekutonga kwechigunwe, kumhanya uku kunofanirwa kunonoka kudzora kuyerera kwepolymer yemvura uye kuwana nzvimbo yakatsetseka. Kubuda mu mold nekukasira mushure menguva yekugara kunokonzeresa kusarongeka kwepamusoro. Zvisinei, kana mold ikanyudzwa uye ikabviswa zvishoma nezvishoma, iyo inoguma yakavhara inenge yakanyanyisa. Zvidyarwa zvemberi zvinoshandisa mibhedha yakanyungudika yepolymer poda kutsiva yechinyakare mvura polymer mhinduro. Pfungwa yacho yakafanana nenzira yechinyakare. Kamwe iyo yakapfava yepolymer poda inobata nzvimbo inopisa ye mold, inonyunguduka uye inonamatira pairi.

Nhanho yechitanhatu: Bvisa polymer yakawandisa

Bvumira yakawandisa mvura polymer kuti ibude kubva pamusoro pe mold. Matanho akawanda ekunyudza anogona kuitwa kuti uwane inodiwa yakakora coating, kana akashongedzerwa machira anogona kushandiswa.

Danho 7: Gadzirisa coating

Iko kupfekedza kunorapwa muchoto, kufambisa yakanyatsoita polymer yekumisikidza maitiro uye kupera kwakazara kwemvura yakawandisa, zvinonyungudutsa, uye zvinowedzera. Iyi nhanho yakakosha pakuwana iyo yekupedzisira mechaniki zvivakwa zvepolymer, sekuoma uye kuchinjika. Mune thermosetting mapolymer, nhanho yekurapa inotungamira kune yakazara muchinjiko-wekubatanidza wepolymer cheni.

Danho 8: Kutonhorera coating

Iyo yakaporeswa yakanatswa inotonhodzwa nekunyudzwa mutangi remvura patembiricha dzinobva 122-1112 ° F (50-600 ° C), kana kuburikidza nekumanikidzwa kana kwechisikigo mhepo convection. Iko kumhanya kwekutonhodza hakuonekwe seyakakosha parameter kana ichienzaniswa nedzimwe nzira dzekugadzira.

Nhanho 9: Sunungura uye dhiza chigadzirwa

Chikamu chakapedzwa chinotorwa kubva paganda. Muchiitiko chekushanda kwe dip molding, iyo yepurasitiki inoputirwa nemaoko kana mechanically yakavharwa kubva kune mold, nokudaro ichiparadzanisa chikamu chega kubva pabatch yayo. Izvi zvinopa chikamu chepurasitiki chakapedzwa kana chikamu. Iyo yepurasitiki kana yepurasitiki yekuputira inogona kuita mamwe maitiro ekunatsiridza senge notch, punching, kudhinda, uye kushongedza.

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