These include brake parts which are amongst the toughest to use components on a vehicle.
Why Brake Parts Corrode So Readily
As previously mentioned corrosion can cause sticking callipers, seized pistons and uneven braking, all of which affect safety. To avoid these types of problems it is essential to ensure that all brake parts are corrosion protected.
Heat Tolerance Suits Brake Conditions
Brake parts experience harsh operating conditions. Because of this, surface coatings on brake parts have to be able to withstand the forces of heat. Our Zinc Nickel Plating coating maintains its protective properties up to around 120°C and therefore is far more suitable for brake parts than normal zinc coatings which can start to deteriorate at earlier temperatures.
Stronger Salt and Moisture Resistance
A zinc-nickel alloy coating is made up of 12% to 15% Nickel and as a result of this has a much higher corrosion resistance than a zinc coating. In salt spray testing a zinc-nickel coating can last up to 1,000 hours before red rust appearance.
For more on this, take a look at www.swmf.co.uk/surface-coatings/zinc-nickel-alloy-plating.
Even Coverage on Threads and Recesses
Brake note, however, that thicker coatings are easier to apply to straight surfaces than to threads and recesses. This is why zinc-nickel deposits uniformly and effectively on brake hardware, including threaded bolts and brackets in recesses.
RoHS Compliance and Safer Passivates
uk/guidance/){rel=”nofollow”} are driving many automotive manufacturers to restrict the use of hazardous substances in vehicle components. The use of hexavalent chromium passivates, commonly used to protect zinc-nickel coatings, is being prevented. Instead trivalent passivates are being used, to give the required corrosion protection, whilst remaining compliant with relevant legislation. uk/surface-coatings/zinc-nickel-alloy-plating/).
By specifying coatings in the correct manner, they can last for as long as necessary to effectively use brake parts.
