Mainly introduce the production process of FRP grating?
There are three main types of FRP grating production processes: reciprocating fiber wrapping process, continuous fiber wrapping process and centrifugal casting process, reciprocating fiber wrapping process (belonging to fixed-length method): In this process method, the dipping tank rotates with The mandrel moves back and forth, and the long fiber glass filaments are placed at a certain oblique angle relative to the mandrel axis.
The auxiliary angle (that is, the surrounding angle) is controlled by the ratio of the moving speed of the dipping tank and the rotational speed of the core mold, and the translational movement of the dipping tank is controlled by computerized electromechanical control. The wrapping layers are gradually added until the designed wall thickness stops. After wrapping is complete, the resin in the article is substantially cured. After curing, the mandrel is removed from the fiberglass pipe.
FRP grating production process and matters needing attention 2. Continuous fiber wrapping process (attributed to continuous method) This process is that the tube passes through a feeding station that supplies resin pre-impregnated roving, chopped fiberglass fiber and resin sand mixture during movement , the tube is made in the continuous advancement of the mandrel.
Centrifugal casting process (belonging to the fixed-length method) In this process, the intercepted glass fiber reinforcement and sand are fed into a steel mold fixed on the bearing, and the unsaturated resin with catalyst is injected into one end of the steel mold to make it. Impregnating the reinforcing material, under the effect of centrifugal force, the resin replaces the fiber and the air in the filling, and then produces a dense composite material without pores.
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