① Kubvisa mafuta
1. Basa: Bvisa mavara emafuta emafuta uye imwe tsvina yehupenyu pamusoro pezvinhu kuti uwane yakanaka electroplating effect uye kudzivirira kusvibiswa kune zvinotevera maitiro.
2. Tembiricha yekudzora huwandu: 40 ~ 60 ℃
3. Nzira yekuita:
Nerubatsiro rwe saponification uye emulsification yemhinduro, chinangwa chekubvisa mavara emafuta chinogona kuwanikwa.
Kubviswa kwemafuta emhuka nemiriwo kunonyanya kuenderana nesaponification reaction.Iyo inonzi saponification inzira yemakemikari reaction pakati pemafuta nealkali mumvura inodzikisira kugadzira sipo.Oiri yaimbonyungudika mumvura inowora kuita sipo neglycerin inonyungudika mumvura, yobva yabviswa.
4. Nyaya dzinoda kutariswa:
1) Ultrasonic oscillation inogona kuwedzera degreasing maitiro.
2) Kana huwandu hwehupfu hwehupfu husina kukwana, dhigirii yekudzikisa haigoni kuwanikwa;apo kusungirirwa kwakanyanyisa, kurasikirwa kuchava kukuru uye mari ichawedzera, saka inoda kudzorwa mukati mehutano hwakanaka.
3) Kana tembiricha isina kukwana, degreasing mhedzisiro haina kunaka.Kuwedzera tembiricha kunogona kuderedza kushushikana kwepamusoro kwemhinduro uye girizi uye kukurumidza kudzikisa mhedzisiro;kana tembiricha yakanyanyisa, zvinhu zvacho zvinowanzoita deformation.Kupisa kunofanira kunyatsodzorwa panguva yekushanda.
4) Mushure mekugadzirisa kwekugadzirisa, pamusoro pezvinhu zvinofanira kunyoroveswa zvachose.Kana paine kunyangadzwa kuri pachena pakati pemadonhwe emvura uye chimiro chemukati, zvinoreva kuti oparesheni haina kusangana nezvinodiwa.Dzokorora kushanda uye gadzirisa parameters munguva.
②Kuzvimba
Mechanism yekuita:
Iyo yekuzvimba mumiririri inowedzera iyo workpiece kuti iwane pamusoro micro-corrosion, uku ichipfavisa icho pachacho, ichiburitsa kusagadzikana kunokonzerwa nekuumbwa kwejekiseni kana zvinhu, kuitira kuti iyo inotevera roughening process inogona kuita yakafanana uye yakaora.
Iyo nzira yekutarisa kushushikana kwemukati kweiyo electroplating zvinhu ichave yakasiyana kune zvakasiyana zvinhu.Kune ABS, iyo glacial acetic acid dipping nzira inowanzo shandiswa.
③Kukoromoka
1. Tembiricha yekudzora huwandu: 63 ~ 69 ℃
2. ABS plastiki inonzi terpolymer ye acrylonitrile (A), butadiene (B) uye styrene (S).Munguva ye roughening process, zvimedu zvepurasitiki zvinowanikwa kuti zvigadzire makomba, zvichiita kuti nzvimbo ye hydrophobic iite hydrophilic, kuitira kuti plating layer inonamatira kune chikamu chepurasitiki uye yakanyatsobatanidzwa.
Zvekungwaririra:
1) Yakakwira chromium mhinduro ine kukurumidza kunyungudika uye coarsening kumhanya uye yakanaka yekunamatira adhesion;asi kana kukosha kwechromic acid uye sulfuric acid yakakura kudarika 800 g / L, mhinduro yacho inonaya, saka zvakakosha kuchengetedza gasi rinokurudzira.
2) Kana iyo yekumisikidza isina kukwana, iyo coarsening mhedzisiro haina kunaka;kana iyo yekumisikidza yakawandisa, zviri nyore kuwedzeredza, kukuvadza zvinhu, uye kuburitsa kurasikirwa kukuru uye kuwedzera mutengo.
3) Kana tembiricha isina kukwana, iyo roughening mhedzisiro haina kunaka, uye kana tembiricha yanyanya, zvinhu zvacho zvinokonzeresa deformation.
④Neutralization (chikamu chikuru ihydrochloric acid)
1. Basa: Chenesa hexavalent chromium yakasara mumamicropores ezvinyorwa mushure mekuomeswa nekuora kudzivirira kusvibiswa kune inotevera maitiro.
2. Mechanism of action: Panguva yekuita roughening, zvinhu zverabha zvimedu zvinonyungudutswa, zvichiita makomba, uye mukati pachasara mvura ine roughening.Nekuti iyo hexavalent chromium ion mumvura inokasharara ine yakasimba oxidizing zvimiro, inosvibisa iyo inotevera maitiro.Hydrochloric acid inogona kuidzikisa kuita trivalent chromium ions, nekudaro ichirasikirwa neoxidizing zvivakwa.
3. Nyaya dzinoda kutariswa:
1) Hydrochloric acid iri nyore kuvhuvhuta, kubvongodza gasi kunogona kuwedzera kusarerekera uye kuchenesa mhedzisiro, asi kuyerera kwemhepo hakusi nyore kuve kwakakura, kuitira kudzivirira kurasikirwa kwehydrochloric acid volatilization.
2) Kana iyo yekumisikidza isina kukwana, iyo yekuchenesa mhedzisiro haina kunaka;kana kusungirirwa kwakanyanya, kurasikirwa kwekutakura kunowedzera uye mutengo unowedzera.
3) Kukwira kwekushisa kunogona kuwedzera maitiro ekuchenesa.Kana tembiricha yakanyanyisa, kurasikirwa kwevolatilization kuchave kwakakura, izvo zvichawedzera mutengo uye kusvibisa mhepo.
4) Panguva yekushandiswa, trivalent chromium ions ichaunganidza uye kuwedzera.Kana mvura yacho yakasvibira, zvinoreva kuti kune akawanda trivalent chromium ions uye inofanira kutsiviwa nguva nenguva.
⑤ Activation (catalysis)
1. Basa: Deposit layer ye colloidal palladium ine catalytic chiitiko pamusoro pechinhu.
2. Mechanism yekuita: mapolymers ane mapoka anoshanda anogona kuumba macomplexes ane ayoni anokosha esimbi.
3. Chengetedzo:
1) Usazunguze iyo activating fluid, zvikasadaro ichaita kuti activator iparare.
2) Kuwedzera kwekushisa kunogona kuwedzera mhedzisiro yekunyura kwepalladium.Kana tembiricha yakawandisa, activator inoora.
3) Kana kuiswa kweiyo activator kusina kukwana, palladium precipitation effect haina kukwana;kana kusungirirwa kwakanyanya, kurasikirwa kwekutakura kwakakura uye mutengo unowedzera.
⑥ Chemical nickel
1. Tembiricha yekudzora huwandu: 25 ~ 40 ℃
2. Basa: Isa yunifomu yesimbi simbi pamusoro pezvinhu, kuitira kuti zvinhu zvishanduke kubva kune asiri-conductor kusvika kune conductor.
3. Nyaya dzinoda kutariswa:
1) Hypophosphorous acid inoderedza mumiriri we nickel.Kana zvirimo zvakwira, kukurumidza kwekuisa kunozowedzera uye plating layer ichave yakasviba, asi kugadzikana kweiyo plating mhinduro kuchave kwakashata, uye kuchamhanyisa chizvarwa cheiyo hypophosphite radicals, uye mhinduro yeplating ichave nyore kuora.
2) Sezvo tembiricha inowedzera, deposition rate yeplating solution inowedzera.Kana tembiricha yanyanya kukwira, nekuti deposition rate inokurumidza, mhinduro yeplating inotapukira kuzviparadza uye hupenyu hwekugadzirisa hunopfupiswa.
3) Iyo pH kukosha yakadzikira, iyo mhinduro sedimentation kumhanya inononoka, uye sedimentation kumhanya kunowedzera kana pH yawedzera.Kana iyo PH kukosha kwakanyanyisa, iyo yekupfekedza inoiswa nekukurumidza uye isina kuonda zvakakwana, uye zvimedu zvinotarirwa kugadzirwa.
Nguva yekutumira: Mar-27-2023