Tungsten carbide coated corrugating rolls have an excellent wear resistance and it leads to much longer roll life than chrome plated rolls.
However rough surface, uneven coating thickness and weak adhesion strength result in many problems such as blistering board, fractured board and serious chip-offs.
Our patented thermal spray method improves the adhesion strength of the tungsten coating layer and wear resistance of the coating. In addition we can reduce surface roughness by using finer powder.
Since we grind again after coating we can achieve the lowest coefficient of friction by completely remove the sharp edges of coating. After grinding the thickness of the coating is also uniform, and it solves blistering board problems, and better printing quality.