Metal Plating Finishes

Atlantic Precision Spring plates and processes everything. Our job isn’t done until your job is made easier by superior material plating and processes. While springs, contacts, and stampings seem uncomplicated – they’re not. A lot goes into their design and manufacture beyond CAD drawings, tooling, and materials. Getting the plating and material processes just right can mean the difference between success and failure in a multi-million dollar application.

BECU contacts

Beryllium copper parts are best used for electrical contacts.

Flat leaf springs

Flat springs can be made from carbon and stainless steel.

 

 

 

 

 

 

Heat Treatment

  • Beryllium copper is selected with the knowledge that it will require tempering to increase its final hardness. If the application allows, beryllium copper can be purchased as a mill-hardened material. Because of its relatively low hardening temperature, beryllium copper suffers very little distortion under heat treatment.
  • Carbon steel has a high hardening temperature, so carbon steel parts are bent to the desired form in an annealed state. They’re then heat treated to their final, desired hardness. Atlantic Precision Spring offers various heat treatment processes such as atmospheric oven and oil quenched.
  • Some types, such as 300 stainless steel and 18-8 stainless steel, receive heat treatment to normalize them after any forming is done. Heat treatment also increases the tensile strength of stainless steel, making it a better spring component. Other grades of stainless steel (like 400 and 17-7) are formed in an annealed state and then heat treated to the desired hardness.

Deburring or Tumbling Operations

  • Vibratory tumbling uses various forms of media, material and vibration processing to remove sharp edges or burrs on manufactured parts.
  • Barrel tumbling is an aggressive means of removing sharp edges and polishing parts. After parts are formed, they are put in a barrel tumbler for a set required length of time.
  • Electropolishing is a chemical process that calls for submerging parts in an acid solution. The “electro” part of electropolishing occurs when a controlled amount of electricity is introduced.
  • Air blasting with glass or sand lightly removes or cleans the outer surface of parts. Parts are usually rack positioned.

Plating and Finishing

Depending on the situation and complexity of your application, different types of finish or plating can be applied. Atlantic Precision Spring will find the perfect finish and plating for your parts. Some reasons for different plating is the requirement of your parts to handle the harsh nature of some finish applications. We also take into account your part’s ability to have professional quality without peeling or cracking.

  • Pre-plated material can be purchased. Pre-plated material does not have to have a post process, which is a possible cause of unwanted bending to the part. Another advantage of pre-plating is the ability to selective plate a strip, which minimizes the amount of expensive precision metal on an entire strip.
  • Reel-to-reel plating onto a material is another process. Its advantage is that there is almost total coverage of the plate, with a minimal risk of distortion. This process can be selective or total in coverage. It is also the process most used for automotive pick-and-place assemblies.
  • Barrel plated onto a material is a good option for some parts. Barrel plating is a bulk process that is the most economical way to plate parts.
  • Rack plated onto a material offers its own unique strengths. Rack plating allows total coverage and minimum distortion. It also enables the plating of delicate parts that would tangle or distort in a barrel plating process.
  • Thermal sprayed onto a material is also used when necessary. Thermal spraying coats a material using a heat source during the spraying. It is only done on thicker parts that will not warp do to the intense heat generated during the process.

 

Electricty that relies on great contacts

Plated electrical and battery contacts

Minature metal stampings

Mini stampings can feature plating or finishing.

Plated metal spring clips

Spring clips with various finishes

 

 

We also offer many other plating capabilities:

  • Nickel
  • Electroless Nickel
  • Gold
  • Chrome
  • Chromium
  • Chromate
  • Tin
  • Zinc
  • Zinc Nickel
  • Silver
  • Copper
  • Phosphate
  • Passivation
  • Color Coding
  • Black Oxide
  • Teflon
  • Powder Coat
  • Epoxy/Plastic
  • Tinning Soldering
  • Dicronite
  • E-coat