Metal plating process

Pre-plating treatment copper plating process galvanizing and zinc alloy process zinc and zinc alloy post-treatment nickel plating process alloy plating process chrome plating process tin plating, silver, gold process chrome plating process aluminum alloy pre-plating pre-treatment copper plating process galvanizing and zinc Alloy process zinc and zinc alloy post-treatment nickel plating process alloy plating process chrome plating process tin plating, silver, gold process chrome plating process aluminum alloy pretreatment process blackening and bronze polishing and passivation process deplating process chemical nickel plating process
Electroless nickel process nickel-free plating process PCB plating process plastic plating process automotive hardware plating process precious metal plating process before and after processing plating process
Common surface treatment process reference
(1) Electroplating process for steel parts
â”Œ - acid galvanizing
Degreasing â†’ Derusting â†’â”‚ â†’ Purification â†’ Drying
â”” - Alkaline galvanizing
(2) Steel parts at room temperature blackening process
â”Œ - immersion dehydration antirust oil
â”‚
â”‚ Drying
Degreasing â†’ descaling â†’ blackening at room temperature â†’ â”‚ dipping soap liquid â†’ â†’ dip ingot oil or oil
â”‚
â”‚
â”” - immersion sealer
(3) Steel phosphating process
Degreasing â†’ derusting â†’ surface adjustment â†’ phosphating â†’ painting

â”‚ â†‘
â””â”€â”€â”€â”€â”€â”˜
(4) Aluminum surface treatment process
â”Œ - chemical polishing â”Œ - electrolytic coloring
â”‚ â”‚
â”‚ Electropolishing â”‚
Degreasing â†’â”‚ â†’ Anodizing â†’ â”‚ â†’ Closed â†’ Dry
â”‚ Alkaline etch â”‚
â”‚ â”‚
â”” - sand surface â”” - chemical dyeing

(5) ABS/PC plastic plating process
Degreasing â†’ Hydrophilic â†’ Pre-coarsening (PC â‰¥ 50%) â†’ Coarsening â†’ Neutralization â†’ Whole Surface â†’ Activation â†’ Dissolution â†’ Chemical Nickel â†’
â†’ Coking of copper â†’ Copper plating â†’ Semi-bright nickel plating â†’ High-sulfur nickel plating â†’ Bright nickel plating â†’ Plating â†’ Chrome plating

(6) PCB plating process
Degreasing â†’ roughening â†’ prepreg â†’ activation â†’ debonding â†’ chemical copper sinking â†’ copper plating â†’ acid degreasing â†’ microetching â†’
â†’ Low stress nickel plating â†’ Bright nickel plating â†’ Gold plating â†’ Drying

(7) Multi-layer plating process for steel parts
Degreasing â†’ Descaling â†’ Plating ** Copper â†’ Copper plating â†’ Semi-bright nickel plating â†’ High-sulfur nickel plating â†’ Bright nickel plating â†’ Nickel sealing â†’ Chrome plating

(8) Process of pre-treatment of steel parts (grinding parts, non-grinding parts)
1. Polishing parts â†’ wax removal â†’ hot dip oil removal â†’ electric oil removal â†’ acid etching â†’ non-plating
2. Non-grinding parts â†’ hot dip and oil removal â†’ electric de-oiling â†’ acid etching â†’ other electroplating

(9) Zinc alloy parts pre-plating process
Dewaxing â†’ Hot Dip Removal â†’ Electric Degreasing â†’ Acid Etching â†’ Alkali Copper Plating â†’ Copper Plating or Copper Pyrophosphate â†’ Other Plating

(10) Process for pre-plating aluminum and its alloys
â”Œ - chemical zinc deposition â†’ pickling â†’ secondary precipitation â†’ alkaline copper or nickel plating â†’ other plating â”‚
â”‚ â”Œâ€”Spray-â”
Dewaxingâ†’Hot-dip degreasingâ†’Electrical de-oilingâ†’Corrosion descalingâ†’â”‚ Aluminium chromizingâ†’Drying â”‚ â”‚â†’ Drying or rougheningâ†’ Finished product
â”‚ â””â€”Dust--â”˜
â”‚
â”” - anodizing â†’ dyeing â†’ sealing â†’ drying â†’ finished product
(11) Iron plating process:
Dewaxing â†’ Hot Dip Removal â†’ Cathode â†’ Anode â†’ Electric De-oil â†’ Weak Acid Etching â†’
â”Œ - pre-plated alkali copper â†’ acid bright copper (select) â†’ bright nickel â†’ chrome plating or other
â†’â”‚
â”” - Semi-bright nickel â†’ High-sulfur nickel â†’ Bright nickel â†’ Nickel seal (select) â†’ Chrome plating

(12) Zinc alloy chrome plating process
Dewaxing â†’ Hot Dip Degreasing â†’ Cathodic Discharge Oil â†’ Acid Picking â†’ Alkaline Bright Copper â†’ Copper Pyrophosphate (Selective) â†’
â†’ Acid bright copper (selective) â†’ bright nickel â†’ chrome plating

(13) Aluminum alloy aluminum plating process
Dewaxing â†’ Degreasing â†’ Weak Corrosion â†’ Descaling â†’ Zinc Plating â†’ Dezincification â†’ Zinc Plating â†’ Nickel Plating â†’ Other Plating

(14) Electric truss and dyeing process
Pretreatment or electroplating â†’ Pure water washing (2-3 times) â†’ Prepreg â†’ Electric truss â†’ Recycling â†’ Pure water washing (2-3 times) â†’ Drying â†’ Finished product http://news.chinawj.com.cn Edit: ( Hardware Business Network Information Center)http://news.chinawj.com.cn

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