Tungsten Carbide: An Alternative to Chrome Plating on Work Rolls

Praxair Surface Technologies began using coatings of tungsten carbide (WC) to protect work rolls for the aluminum industry in 2006. In 2015, the company initiated trials to transfer this success to the steel industry in Europe, driven by the EU's proposal of REACH regulations. Adoption of REACH could altogether eliminate the use of chrome plating since the hexavalent chromium byproduct is a banned substance. Current WC coatings development is focused on establishing the proper carbide chemistry to meet performance targets for ground and textured work rolls. Laboratory and mill trial results will be discussed, along with industrialization business models.

Michael Brennan | Praxair Surface Technologies Inc., a Linde Company
 

Adam Smith | Praxair Surface Technologies Inc., a Linde Company