Silvec’s Surface Treatments

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Anodizing

Alumite is the process of growing an aluminum oxide film on the surface of an aluminum material by passing a direct current with the aluminum material as the anode (+) and the carbon plate as the cathode (-).

Charactristics

High Corrosion Resistance	High Degree of Hardness
Wear Resistance	Insulation Coating
Decorative	Lubricating Ability
Antifouling	Uniform Film thickness
Coating Adhesion Stability

► Normal Anodizing

Supporting Aluminum Materials	Alloy for wrought materials - 1000～7000series、Casting Alloy ADC12,ADC6,AC7C,AC4C 等
Size	W1250 × D400 × H650
Color	Natural、Black , Gold, Red, Blue , Grey , Brown , Bronze, （Please consult us for specific colors）
Method	Jig
Hardness	About HV200（Depends on material）
Size Increase	Thickness x Approx. 1/3 (in the case of 10μm, increases by 3-4μm)
Pre-Treatment	Chemical polishing, chemical satin finish, buff polishing, sandblasting

► Hard Anodizing

Supporting Aluminum Materials	Alloy for wrought materials - 1000～7000series、Casting Alloy - ADC12,ADC6,AC7C,AC4C etc.
Size	W1250 × D400 × H650
Color	Natural Coloring (Color changes to gray-brown depending on film thickness and material)
Method	Jig
Hardness	Over HV400 （Depends on material）
Size Increase	Film thickness x Approx. 1/2 (In the case of 10μm, increases by 5μm)

► Aluminum Alloy Anodizing Adaptability

Alloy Name	Objectives
Alloy Name	Anticorrosion	Coloring	Brightness	Hardness
1080 1070 1050 1100	A A A A	A A A A	A A A A	A A A A
2011 2014 2017 2024	C C C C	C C C C	D D D D	C C C C
3003 3004	A A	B B	C C	A A
4043	B	B	D	B
5005 5052 5056 5083 5N01	A A A A A	A A A A A	B B C C A	A A A A A
6061 6063 6N01 7075 7N01	A A A B B	A A A B B	C B C C C	A A A B B

Alloy Name	Objectives
Alloy Name	Anticorrosion	Coloring	Brightness	Hardness
AC1B AC2A AC3A AC4B AC4C AC5A AC7A AC8A AC9A	C C B C B C A C C	C D D D D C A D D	D D D D D D B D D	C C B C C C A C C
ADC1 ADC3 ADC5 ADC6 ADC10 ADC12	C B A A C C	D D A B D D	D D B B D D	C B A A C C

Mark A:Very Good B:Good C: Avegrage D:Unfit

JIS H
8601

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Chemical Treatment

Trivalent chromium chemical conversion film is generated through a chemical reaction. With the film being ~1μm thick, there is practically no dimensional change.

Our company supports chemicals specified by most automobile manufacturers. Given its simple process, it can be processed cheaper than alumite while being highly resistant to corrosion. It also has good adhesion making it ideal for surface treatments.

Available Materials	Various Aluminum Die Cast、Aluminum for Lost Wax、 A1000～7000series
Corrosion Resistance	Good（Degree depends on material）
Wear Resistance	None
Coating Adhesion	Good
Cost	Cheaper than Alumite
Process	Jig、Basket Processing
Size	1250 × 430 × 730
Quantity	Prototype to Mass Production
英語表記例	Chemical conversion treatment Chemical conversion coating Trivalent chromium treatment Trivalent chromate

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Plating

► Plating Menu

Copper Plating

Method : Jig Barrel

Electrolytic nickel Plating

Method : Jig Barrel

Trivalent Chromium

Method : Jig

Electroless Nickel Plating

Method : Jig Basket

Black Nickel Plating

Method : Jig Barrel

Bright chromate/TIN (Sn) Plating

Method : Barrel

► Compatible Materials

Aluminum

Zinc
Die-cast

Iron

Copper

Cu/Zn

SUS

＊All of our products are RoHS appricable as well as MSDS available.　

► Method

The plating work is roughly divided into two methods. 1) using a jig 2) using a barrel.
Using the jig, each product is set on the jig, and plated. Using the barrel, the product is placed in the barrel and plated while rotating.
We can perform highly accurate barrel plating on fine products, products that are easily deformed, and products that are easily entangled.

JIG Plating	BARREL Plating

Merits ・Because products do not come in contact, dents, abrasions, deformation, etc. can be prevented. ・Large sizes can be plated	Merits ・Fairly equal thickness inside the barrel ・No jig contact mark ・Lower unit price
Demerits ・Higher unit price ・Jig contact traces are generated	Demerits ・Striking, abrasion, and deformation can occur depending on the shape and weight ・Large size products cannot be barreled

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Polish / Satin Finish

Types		Materials	Characteristics
Polish	Chemical Polishing	Aluminum, Iron	Polishing by immersion in chemical polishing liquid reduces overall dimension.
	Buffing Polishing	Zinc die casting, Aluminum、Brass	Physical polishing of the surface reduces surface dimension.
	Barrel Polishing	Aluminum, Iron、 Zinc die casting、SUS	The process differs depending on the purpose (gloss, burr removal, surface modification, etc.). The contact surface with the media is polished resulting in reduced dimensions.
Satin	Chemical Satin	Aluminum	The process differs depending on the purpose (gloss, burr removal, surface modification, etc.). The contact surface with the media is polished resulting in reduced dimensions. Shot blasting may increase product dimensions due to changes in the surface of the product.
Satin	Shotblast	Aluminum、 Zinc die casting