Face Seals and Annular Coatings
Above:Greystone executives, Everett Fernald (at left); David Lippy (center), and Steve Durkin, Sales Engineer (right) discuss Greystone's extensive offerings and expertise.
Greystone Solenoid Plating
Above:Greystone executives, Everett Fernald (at left); John Maconi (center), and David Lippy (right) discuss Greystone's experience and understanding of solenoid plating. Further, learn about specific processes that Greystone uses to plate solenoids with few or no nodules.
Medical Chrome Plating: Autoclaving
Above: Greystone executive, David Lippy (right) discusses Greystone's experience and innovation in Medical Chrome Autoclaving, with Rawl Rutter (left), Business Manager for Greystone's plating subsidiary Induplate.
Selective Zinc Plating
Above: Greystone executive, David Lippy (right) discusses Greystone's abilities in Selective Zinc Plating, with Rawl Rutter (left), Business Manager for Greystone's plating subsidiary Induplate.

Case Studies

Plating small solenoids to tight thickness, and profile tolerances

Overview:

A large manufacturer of very small solenoids relies on Greystone to provide cost effective chrome plating on precisely where they need it on their parts and in the optimum thickness to maximize performance. Tolerances are very tight due to the extreme conditions that the parts will operate under.

Challenge:

The parts require a thin non-magnetic gap between two magnetic components to reduce the magnetic "stiction" and facilitate opening & closing of the device; chrome plating not only fulfills this roll, but it also provides an excellent wear resistant coating increasing part life to well over a billion operations. The thickness and location of coating is absolutely critical to achieve maximum performance; tolerances are held to within a couple of microns to keep that competitive edge.

Approach:

The Greystone Engineering Team's high volume experience with difficult geometries and tight chrome tolerances spans almost 70 years and several billion components of various sizes. As with many of the previous parts, these required development of custom tooling to control the plating application to within the single digit micron tolerance both on thickness and location. The tooling design is done in-house at Greystone as well as designing and building the custom line for plating the parts.

Result:

The production start was on schedule and under budget for these parts. The plating quality exceeded their previous supplier's as far as maintaining the tight tolerances. In addition, Greystone Engineers assisted the customer in further improving their operational costs by adjusting the geometry of the chrome plating to allow lower machining costs. Lastly, the Greystone Engineers were also able to boost the part's performance further by applying a specialty chrome coating that also alleviated some of the sliding wear problems the customer was encountering.