Rayco Metal Finishing
Metal Is Proudly Finished In The USA By U.S. Citizens
 

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134 Mill Street
Middletown CT 06457

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Ph: (860) 347-7434
Fax: (860) 347-7436

 
 

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Specializing In:

  • Electroplating
  • Anodizing & Chemical Film
  • Electropolishing & Passivation
 
 

Our Processs


Electropolishing & Passivation

Electropolishing is a very unique finishing process. While plating implies adding material such as nickel or zinc, electropolishing does the opposite. Material is removed. Applications include burr removal, passivation and giving the metal a bright finish.

Electropolishing is also unique because it is defined as an engineering specification. Commercial and Government standards may define the process, but the criteria can be different for each item requiring electropolishing. Average material removal is generally .0001-.0002 but can be increased or decreased as specified.

Common industries using this finish are medical and surgical instruments, aerospace, marine hardware, and food service equipment.

Finally, as mentioned, electropolishing is also a passivation process. Studies have shown, however, that the results far exceed results of passivation alone.

Passivation is a process often considered to be a cleaning operation. The cleaning includes the removal of any ferrous particles left on the surface during machining or other secondary operations. Any part made of stainless steel should be electropolished or passivated to prevent any surface corrosion later.


Electroplating & Aluminum Finishing

We provide several commercial finishes on aluminum, steel, copper, brass, titanium and stainless steel. Our method of plating and anodizing is rack plate. We can do chemical film in bulk. Rayco Metal Finishing has achieved a reputation of being a short to medium run shop, providing excellent quality and handling of our customers’ parts.


Facilities List

Below are listed the plating, anodizing, and electropolishing and passivation facilities of Rayco Metal Finishing, Inc. We can provide certifications for all finishes.


Plating Facilities

Facility Size of Tank
Nickel-Watts Nickel 8' x 3' x 3'
Chromium 6' x 3' x 3'
Zinc-Chloride Zinc 7' x 3' x 3'
Zinc-Chloride Zinc 7' x 3' x 3'
Zinc-Chloride Zinc 7' x 3' x 3'
Zinc-Alkaline Zinc 8' x 3' x 3'
Zinc-Alkaline Zinc 6' x 3' x 3'
Zinc-Alkaline Zinc 6' x 3' x 3'
Chromates for Zinc: Clear, Gold, Black, Clear/Blue


Chemical Conversion Coatings of Aluminum to Mil spec 5541

Various tanks for Alodine and Iridite.
Colors: Clear, Yellow, Gold, and Dark Gold


Anodizing Facilities Mil spec 8625 Type II

Anodize-Sulfuric Acid 7' x 3' x 3'
Anodize-Sulfuric Acid 7' x 3' x 3'
Colors: Clear  


Electropolishing Facilities

Electropolish 3' x 3' x 3'
Electropolish 6' x 3' x 3'


Passivation of Stainless Steel Mil spec QQ-P-35 Types I-VI

Passivation-Nitric Acid 7' x 3' x 3'
Passivation-Citric Acid 6' x 3' x 3'


Chromating & Bright Dip

Various tanks for chromating and bright dip of brass & copper.


Tin Plating Facilities Mil spec 10727C & ASTM B545

Bright Acid Tin 3' x 2' x 3'