The high-volume applications required a 0.07-0.19 coefficient-of-friction and had to also assure the ability of the component parts to achieve corrosion performance after crimping the parts onto the hose. The solution we derived from several DOE trials was to apply a 0.0002″-0.0004″ zinc trivalent clear chromate with an integrated lubricant in an improved barrel rotation cycle.
The process proved capable and repeatable in regards to the COF, corrosion resistance and plating thickness requirements of our customer’s supplied specifications and testing standards. After proving the process out on several different families of fittings, our customer approved us as their primary plating source for all of their applications.
