Injection screw is an important part of the injection molding machine. Its function is to convey, compact, melt, stir, and apply pressure to the plastic. All of these are accomplished by the rotation of the screw in the barrel. When the screw rotates, the plastic will cause friction and mutual motion against the inner wall of the barrel, the bottom surface of the screw groove, the propulsion surface of the screw edge, and between the plastic and the plastic. The quality and wear resistance of the screw shaft directly affect the operation efficiency and production costs.
After laser cladding, the hardness of the screw shaft is significantly increased, and the friction coefficient is relatively decreased, so the service life of the product can be correspondingly improved. Once the tungsten carbide coating on the surface of the roller is damaged, it can be re-sprayed to reduce costs and be reused. Because the tungsten layer remains stable in different environments and is not easy to react with, some acid and alkali liquids and gases are not corroded, which greatly improves the acid and alkali corrosion resistance.
