Kev kho cov khoom xeem ua ntej electroplating ntawm hluav taws xob cua sov raj

Kev kho cov khoom xeem ua ntej electroplating ntawm hluav taws xob cua sov raj

1. Tshuab roj thiab xeb tshem tawm

Tom qab ntawd, siv lub grinder kom du tawm ntawm 6 qhov chaw tuaj yeem tsis tsuas yog tshem tawm xeb tab sis kuj ua rau cov tsos ntawm cov qauv tiaj tus, uas tsis tsim nyog rau kev sib piv thiab kev txaus siab ntawm cov qauv plating.

2. Tshuaj degreasing

Kev tshem tawm cov roj tshuaj yog hais txog kev kis tus kab mob saponification thiab kev ua haujlwm ntawm Duba alkali tov, uas emulsifies cov roj uas tsis yog saponifiable thiab tshem tawm ntau cov roj stains ntawm qhov pom ntawm daim ntawv xeem. Qhov kub ntau rau tshuaj degreasing feem ntau yog nyob nruab nrab ntawm 60 thiab 80 degree. Cov nyhuv degreasing ntawm daim ntawv xeem yog feem ntau pom kev soj ntsuam, uas txhais tau hais tias cov tsos ntawm daim ntawv xeem tuaj yeem ua tiav los ntawm dej, qhia txog kev tshem tawm tag nrho cov roj stains. Cov tshuaj degreasing yog tsim los ntawm sodium hydroxide, sodium carbonate, sodium phosphate, iav dej, emulsifiers, thiab lwm yam.

Sodium silicate tuaj yeem emulsify thiab meta-kab mob los pab hauv kev ncaj thiab degreasing, tab sis cov qauv yuav tsum tau ntxuav kom huv si tom qab degreasing. Txwv tsis pub, tom qab ntxuav cov kua qaub, cov seem ntawm sodium silicate yuav hnov ​​​​mob nrog cov kua qaub los tsim cov silica gel insoluble, ua rau cov pob txha ntawm cov txheej thiab cuam tshuam rau nws lub zog. Yog li ntawd, tus neeg sawv cev saum npoo av nrog cov kab mob sib xws tab sis tsis muaj kab mob sab nraud rau cov tshuaj plating yog xaiv los hloov sodium silicate. Cov tsos mob tshwm sim yuav tsum yog alkali resistant, uas yog, cov uas muaj peev xwm muaj nyob rau hauv alkaline daws. Tsis yog ionic thiab anionic hom lossis lawv pawg tuaj yeem xaiv tau. Cov tsos mob tshwm sim siv tau hauv cov tshuaj alkaline suav nrog cov tshuaj ntxuav tes 650-, 6503-, 664-, thiab sodium dodecylbenzenesulfonate.

Piv txwv tias cov roj tshem tawm tsis tiav ib zaug, nws yuav tsum tau muab yaug nrog dej thiab muab tso rau hauv cov roj tshem tawm. Qhov no yuav tsum tau rov ua dua kom txog thaum cov roj raug tshem tawm tag nrho. Tus qauv rau kev tshem tawm cov roj yog tias cov tsos ntawm cov substrate ncav cuag ib daim ntawv ntub dej, tuaj yeem tsim cov yeeb yaj kiab dej nruab nrab, thiab tsis muaj cov hlaws dai.

3. Acid ntxuav

Pickling kua mis: 1: Ib qho hydrochloric acid (ntim piv) Cov khoom siv ua haujlwm: kub: chav tsev kub; Sijhawm: 5-30 vib nas this

4. Kev ua haujlwm

Kev ua kom muaj zog yog cov txheej txheem ntawm kev ua kom tag nrho lub tshuab poob nws lub siab ua haujlwm zoo, thiab hom kua qaub corrosion no muaj feem xyuam rau cov khoom sib txawv siv hauv tag nrho lub tshuab. Kev ua kom cov hlau dav dav tuaj yeem nres nrog 10 feem pua ​​​​sulfuric acid lossis 1: 1 hydrochloric acid, thiab cov txheej txheem ua kom muaj zog yog kom tsis txhob ua kom thaum lub teeb thiab cov npuas nruab nrab tshwm rau saum npoo ntawm daim ntawv xeem.

Activation tov formula: -0 feem pua ​​sulfuric acid (volume ratio): ρ= 1, 84g/cm3 ua hauj lwm mob: chav tsev kub; Sijhawm: 0-20 vib nas this.