What is the production process of FRP grille?
Continuous filament winding process (which belongs to the continuous method) that this process is a pipe in the movement through a supply of resin prepreg roving, feeding chopped glass steel fiber and resin sand mixture station, the pipe is made in a mould in continuous progress.
Centrifugal casting process (which belongs to the fixed length method): in this process, the cut glass fiber reinforced materials and sand feeding fixed on the bearing steel mould, the catalyst of unsaturated resin is injected in the die end, the impregnated reinforcing material, under the action of centrifugal force, the replacement of resin fiber and fill in the air, thus producing a dense composite material without pores, due to the centrifugal force of the pipe inner surface layer with a smooth and polished resin is formed on the inner wall of pipe, curing at high temperature. The tube made of this method is also called glass fibre reinforced plastic sand inclusion tube.
Reciprocating fiber winding technology (belonging to the fixed length method): in this process, dipping tank with mandrel rotating reciprocating motion, long fiber glass fiber with a certain angle relative to the mandrel axis auxiliary, auxiliary angle (i.e. winding angle) by dipping groove movement speed and mandrel speed ratio control, control of electric glue impregnation groove translational motion by a computerized machine. The number of plies increases gradually to the wall thickness of the design. When the winding is finished, the resin in the product is basically solidified. After solidification, the core die is removed from the glass tube.
