One of the most direct ways to identify tungsten carbide coatings is to conduct a hardness test. Tungsten carbide has extremely high hardness, usually reaching 70HRC (Rockwell hardness) or more. Therefore, the hardness of the coating can be tested by using tools such as Rockwell hardness tester.
Rubber rollers can firmly grasp and transmit various materials, including paper, plastic film and metal foil, through their elasticity and friction. The elasticity of the rubber roller adapts to the thickness and surface characteristics of different materials, ensuring that there is no slipping, displacement or damage during the transmission process.
As a highly efficient surface treatment equipment, the corona roller can significantly increase the surface energy of the material and enhance its bonding with other materials, thereby improving the quality and reliability of the product.
If the surface of the industrial roller is bright and has a silvery white reflection, this may be a sign of chrome plating. In contrast, the surface of the roller that has not been chrome-plated may show the color of the metal itself, such as the gray of iron or the dark gray of steel, with a relatively low gloss.
