Mechanical Plating

Mechanical Plating (Peen Plating) is universally recognised as the answer to ensure plated products have no hydrogen embrittlement.

Mechanical Plating allows high tensile products to be mechanically plated but with the confidence that your product performance is not compromised by embrittlement.  This process is carried out at ambient temperatures in rotating tulip shaped rubber lined barrels containg glass impact media, surface conditioners and zinc powder.

The energy expanded from the rotation of the barrel causes the glass impact media to cold weld the zinc powder to 100% of the surface area and therefore there are no problems with unplated areas.

Main Benefits 

• Medium term corrosion protection

• Coating Deposits range 5-15 microns

• After treatments - chromate, passivation, JS 500 etc

• Salt spray results - 96 - 300 hrs

• No Hydrogen embrittlement

• Integral lubricant available

• Chrome VI free passivates

Applications

• Compression springs, tension springs - car wing mirrors

• Self drilling, self tapping screws

• Cap screws

• Wheel balance clips

• Masonry nails

• Hardened washers

• Bolts

• Hardened steel fastners

Coatings Specification

Coating deposits are typically those of electroplating, 5-8 microns but can be increased to 50 microns if specified.  Above 20 microns this process is normally called Mechanical Galvanising.

Specifications / Approvals

BS7371 Part 7

For further information regarding Mechanical Plating click on the following link that will take you to the Info Library on this website