Types Of Glass Steel Pipe Production Process

There are three main types of FRP production processes: reciprocating filament winding process, continuous filament winding process and centrifugal casting process.

Reciprocating fiber winding process (belonging to the fixed length method): In this process method, the dipping tank reciprocates with the rotating core mold, and the long fiber glass filaments are placed at a certain oblique angle relative to the core mold axis, and the auxiliary angle (ie The winding angle is controlled by the ratio of the moving speed of the dipping tank to the rotation speed of the core mold, and the translational movement of the dipping tank is controlled by computerized electromechanical. The number of winding layers gradually increases until the designed wall thickness is reached. After winding, the resin in the product is basically cured. After curing, the core mold is removed from the glass steel pipe.

Continuous filament winding process (belonging to a continuous process): This process is a process in which the tube passes through a feeding station that supplies resin pre-impregnated roving, chopped glass fiber reinforced plastic fiber and resin sand mixture while in motion. The tube is continuously advancing in the core mold. Made in.

Centrifugal casting process (belonging to the fixed-length method): In this process, cut glass fiber reinforced materials and sand are fed into a steel mold fixed on the bearing, and an unsaturated resin with catalyst is injected at one end of the steel mold to make It is impregnated with reinforcing materials. Under the action of centrifugal force, the resin replaces the air in the fibers and fillers, thereby manufacturing a non-porous dense composite material. Due to the centrifugal force, the inner wall of the tube forms a smooth, smooth and resin-rich inner surface layer. Cured at higher temperatures. The pipe made by this method is also called FRP sand pipe.

In the world, there are more manufacturers using reciprocating filament winding process to make pipes than the other two production process manufacturers. One of the reasons is that the glass steel pipe manufactured by reciprocating filament winding process has a wider range of uses and better applicability.