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Electroplating
■ Plating Standard Spec.
DOWA HIGHTECH CO.,LTD.
Platable Materials
Copper, brass, phosphor bronze, Ti-Cu, Be-Cu, German silver, nickel, stainless steel, Alloy 42, etc.
Platable Shapes
Strip, punching hoop
Aftertreatment
Anti-corrosion (for Au), Anti-discoloration (for Ag)
Option: Slitting into various width after Wide Size Plating
   
fig01
Plating Metal Plating Type
Overall One side Partial
Stripe Spot Fluid Level
Au
Ag
(Bright)
 
Sn
(Reflow, matte, bright)
 
Ni
(Matte, bright)
 
Cu
For underlay
 
◎ Available with sides of different thickness
   
DOWA METALTECH (THAILAND) CO.,LTD.
Platable Materials
Copper, brass, phosphor bronze, etc.
Platable Shape
Strip
Aftertreatment
Anti-discoloration (for Ag only)
Option: Slitting into Various Width after Wide Size Plating
   
fig02
Plating Metal Application
Material thickness
(mm)
Material width
(mm)
Overall Partial
Au 0.15–0.8 20–150  
Ag
(Bright)
0.2–1.2 20–150
Sn
(Reflow, matte, bright)
0.15–1.2 20–200
Sn
(Reflow)
0.15–1.2 (180)–300  
Ni
(Matte, bright)
0.15–1.2 20–200
Cu
For underlay
0.15–1.2 20–200
◎ Available with sides of different thickness
☆ Spot available
   
■ DOWA Plating Technology
1 Various Types of Plating
 
2 Various Types of Materials
Precious Metals
Au · Ag
Others
Sn , Sn-Reflow , Ni
 

Various Copper Alloys, Stainless Steel, Strips & Other Punching Hoops

Material Thickness
0.1–2.0mm
Width
Ag: MAX 300mm    Au: MAX 150mm
3 Cost Reduction through Differential Ag Plating, Wide & High-Speed Ag Plating, Stripe Ag/Sn Plating
Differential Plating → Reduce Amount of Ag
 
Wide & High-Speed Plating→Reduce Processing Costs
fig03   fig04
4 Proposals to Reduce Costs by Plating Type
Spot Plating
When a new design is developed or a process changes, we propose a cost reduction through precious metal plating.
 
Material Spec.
Material Cu-based
Thickness 0.2–0.8mm
Width 20–150mm
Kg (max.) 800kg
Plating Spec.
Metal Thickness (μm)
Ni underlay 0.1–1.0
Au 0.05–1.2
Cu underlay 0.1–0.5
Sn 0.1–3.0
Spot Spec. (mm) 
MIN size 1.0×1.0
MAX size 20.0×20.0
Tolerance ±0.3
fig05  
Stripe Plating Type Spot
Ni (underlay) + Au stripe
Au
≧ 0.05μm
Plating Spec. Ni (underlay) + Au spot
Au ≧ 0.05μm
10 Au amount (rate) 3
 
     
     
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