Production Process Of Frp Grating Of Frp Grating Manufacturer

Production of FRP grating Features:

1,Corrosion resistance. It has excellent corrosion resistance to various gas and liquid media such as acids, alkalis, organic solvents, salts, etc., and has unparalleled advantages in the field of anti-corrosion. Depending on the requirements of the practical application, ortho-, meta- and vinyl resins can be economically used as matrix materials. 

2, Light weight, high strength, easy to cut and install. Because it is made of resin and glass fiber, the density is less than 2 per cubic decimeter2kg, steel only1/4, Al2/3. Its strength is rigidPVC 10 times stronger than aluminum and ordinary steel. Its light weight significantly reduces foundation support, thereby reducing the material cost of the project. Easy to cut and install, no need for hot work and large lifting equipment, only a small amount of manpower and power tools, which greatly reduces the installation cost. 

3, Anti-aging. The service life is more than 50years. 

4, Flame retardant. The flame spread rate of ordinary flame retardant grille exceeds 25; The flame spread of advanced flame retardant vinyl grating is less than 10. The oxygen index should not be lower than 28.

5, Safety: Good electrical insulation,10KVNo breakdown under voltage; no electromagnetism, can be used for magnetic sensitive equipment; the special structure of FRP grating also has the characteristics of anti-skid and anti-fatigue.

FRP grating manufacturers have three main production processes: reciprocating filament winding process, continuous filament winding process and centrifugal casting process.

1. Reciprocating filament winding process: In this process, the long glass fiber filament is at a certain oblique angle relative to the axis of the mandrel Placed, the dipping tank reciprocates with the rotating mandrel, the auxiliary angle is controlled by the ratio of the rotation speed of the mandrel to the moving speed of the dipping tank, and the translational movement of the dipping tank is controlled by computer electromechanical. The number of wrapping layers is gradually increased until the design wall thickness is reached. After winding, the resin in the product is substantially cured. After curing, remove the mandrel from the fiberglass pipe.

3. Continuous filament winding process: The process is that the pipe passes through a feeding station, which supplies resin pre-impregnated roving, Chopped glass fiber reinforced plastic fiber and resin sand mixture, the tube is made in the continuous advance of the mandrel.

3. Centrifugal casting process: In this process, unsaturated resin with catalyst is injected into one end of the steel mold, and the cut The fiberglass reinforcement and sand are fed into steel molds fixed to the bearing to impregnate the reinforcement. The resin replaces the air in the fibers and fillers, and under the action of centrifugal force, a dense and non-porous composite material is produced. Due to the action of centrifugal force, a smooth and resin-rich inner surface layer is formed on the inner wall of the pipe. The pipe made by this method is also called glass fiber reinforced plastic sand pipe.

At present, the fiberglass grating manufacturer in the world using the reciprocating filament winding process to manufacture pipes is more than the other two production processes One of the reasons is that the FRP pipes manufactured by the reciprocating filament winding process are more widely used and have better applicability.