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, silver, gold process chrome plating process aluminum alloy pretreatment process black and bronze polishing and passivation Process deplating process chemical nickel plating process 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 Black 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 metal plating process precious metal plating process before and after processing plating process common surface treatment process reference (1) Iron and steel electroplating process ┌ - acid galvanizing degreasing → derusting → │ → purification → drying └ - alkaline galvanizing (2) steel parts at room temperature blackening process ┌ - immersion dehydration antirust oil │
│ Drying and degreasing→Descaling→Blackening at room temperature→│ Soaking soap liquid——→ Dipping spindle oil or oil │
│
└ - immersion sealer (3) phosphating process of steel parts degreasing → derusting → surface adjustment → phosphating → painting

│ ↑
└─────┘
(4) Aluminum surface treatment process ┌ - chemical polishing ┌ - electrolytic coloring │ │
│ Electropolishing │
Degreasing →│ → Anodizing → │ → Closed → Drying │ Alkaline etch │
│ │
â”” - sand surface â”” - chemical dyeing

(5) ABS/PC plastic plating process degreasing → hydrophilic → pre-roughening (PC ≥ 50%) → roughening → neutralization → whole surface → activation → debonding → chemical nickel deposition →
→ Coking of copper → Copper plating → Semi-bright nickel plating → High-sulfur nickel plating → Bright nickel plating → Plating → Chrome plating

(6) PCB plating process degreasing → roughening → pre-dip → activation → de-bonding → electroless copper plating → copper plating → acid degreasing → micro-etching →
→ Low stress nickel plating → Bright nickel plating → Gold plating → Drying

(7) Multi-layer electroplating process for steel parts Degreasing → Derusting → Plating ** Copper → Copper plating → Semi-bright nickel plating → High-sulfur nickel plating → Bright nickel plating → Nickel sealing → Chrome plating

(8) Steel parts pre-treatment (grinding parts, non-grinding parts) Process 1, sanding parts → wax removal → hot dip oil removal → electric oil removal → acid etching → non-plating 2, non-grinding parts → hot dip → Electric oil release → Acid etching → Other plating

(9) Zinc alloy parts pre-plating treatment process wax removal → hot dip oil removal → electric de-oiling → acid etching → alkaline copper plating → copper plating or copper pyrophosphate → other plating

(10) Pre-treatment process for aluminum and its alloys ┌ - chemical zinc deposition → pickling → secondary precipitation → alkali-plated copper or nickel → other plating │
│ ┌—Spray-┐
Dewaxing→Hot-dip degreasing→Electrical de-oiling→Corrosion descaling→│ Aluminium chromizing→Drying │ │→ Drying or roughening→ Finished product │ └—Powder ┘
│
└ - Anodizing → Dyeing → Sealing → Drying → Finished product (11) Iron plating process:
Dewaxing → Hot Dip Removal → Cathode → Anode → Electric De-oil → Weak Acid Etching →
┌ — pre-plated alkali copper → acid bright copper (select) → bright nickel → chrome plating or other → │
└ - Semi-bright nickel → High-sulfur nickel → Bright nickel → Nickel seal (select) → Chrome plating

(12) Zinc alloy chrome plating process wax removal → hot leaching oil → cathode electric oil removal → pickling → alkaline bright copper → copper pyrophosphate (selective) →
→ Acid bright copper (selective) → bright nickel → chrome plating

(13) Aluminum alloy aluminum alloy plating process wax removal → degreasing → weak corrosion → descaling → zinc immersion → dezincification → zinc immersion → nickel plating → other plating

(14) Pre-treatment or electroplating of electric truss and dyeing process → Pure water washing (2-3 times) → Pre-dip → Electric truss → Recycling → Pure water washing (2-3 times) → Drying → Finished product
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn

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