Sheraplex

The Sheraplex process is a Duplex system which utilises the excellent sacrificial corrosion protection afforded by the Sherardizing process combined with an organic barrier layer.

The characterisitc matt textured surface of the Sherardizing also provides an excellent key to the organic barrier layer enhancing the performance of both processes.

The first element of the Sheraplex system Sherardizing, is a diffusion process in which articles are heated in the presence of Zinc Dust.  The process is normally carried out in a slowly rotating closed container at a temperature within the range 320 - 500 celsius, depending upon the base material and it's condition. 

The resultant zinc/iron alloyed coating is subsequently zinc phosphated resulting in a clean, passivated, matt grey surface. The coating closely follows the contours of the base material and uniform coatings are produced on articles including those of intricate shapes.

The second element to the duplex coating is an organic barrier layer.  Applied by either a dip/spin or spray technique, the layer is subsequently cured at 200 celsius resulting in a uniform, complete coverage coating whch allows intricate shaped and precision machine components to be treated.

The Sheraplex process has been developed to meet the requirements of the Water, Oil and Gas industries who have recognised the benefits of a combined substantial sacrificial protection with a barrier layer to withstand exposure to extreme environments.

Sheraplex coatings overcome the problems of substrate corrosion cuased by damage to the organic layerduring assembly of components, offering substantial sacrificial protection preventing substrate corrosion in the event of damage