Processing of glass fibre, calcite, reinforcing materials or similar additives, especially which cause high abrasive and corrosive wear, will shorten the life of the plasticizing unit. With the correct selection of screw and barrel material and the appropriate hardening method, your machine will continue to operate for longer periods of time by showing minimal irregularities.
Depending on the raw material and processing conditions, choosing the right design, steel and hardening method constitutes the basic 3 factors determining the life of the screw and barrel. Former Machine can guarantee optimum operating life by providing the most appropriate solution for your process. There are 3 types of wear on the barrel and screws. These are abrasive, corrosive and adhesive wear.
Abrasive wear; hard abrasive materials (glass fibre, glass containing materials, silica, calcite, talc, flame retardants) are due to long contact with each other in high temperature and pressure conditions.
Corrosive wear; It consists of the chemical interaction of any component in the formulation with the screw and creates pits in the form of tingling on the screw surface.
Adhezif wear is due to the contact of metal surfaces with each other. With the rotational movement of the screw, there is a continuous interaction between the screw pitch and the inner diameter of the barrel at high pressures. As a result, it will be observed that metal is stripping from the body of the screw or barrel.