FRP large storage tank manufacturing process

FRP large storage tanks are widely used in chemical, environmental protection, food, pharmaceutical and other industries due to their light weight, high strength, good corrosion resistance and excellent processability. The following is a detailed production process flow:

1. Design stage

Determine parameters: According to the purpose, capacity, working conditions and other requirements of the storage tank, formulate a design plan for the storage tank. Specific parameters include the shape, size, storage medium, working pressure, use temperature, etc. of the storage tank.

Structural design: The designer determines the tank structure and installation method, as well as the required material specifications, quantity and other parameters through analysis, calculation and simulation.

2. Material procurement

Main materials: Generally, alkali-free glass fiber is used, and short fibers, medium and long fibers and long fibers are selected according to requirements to make storage tank shells, supports, ladders and other components.

Auxiliary materials: Purchase appropriate amounts of resins, additives, fillers and other auxiliary materials for preparation.

3. Manufacturing process

3.1 Preparation

Task confirmation: determine the production task, clean the production site, prepare necessary tools, equipment, measuring instruments, etc.

Material preparation: according to the process requirements, mix the resin, hardener and other auxiliary materials in the formula ratio to ensure the quality of the materials.

3.2 Mold making

Mold design: make the mold according to the design drawings, including upper and lower molds, side molds, flange molds, flange coating, gaskets and other components.

Mold processing: the mold surface needs to be polished and cleaned to ensure that the surface is smooth and flawless.

3.3 Lining molding

Gluing: apply glue to the prefabricated materials one by one according to the process requirements, and pay attention to the uniform and reasonable glue coating.

Inner lining: The inner lining is in direct contact with the storage medium, and the quality performance is directly related to the service life and anti-leakage ability of the tank. The inner lining is usually formed by injection molding or manual brushing.

3.4 Structural layer winding

Wrapping equipment: Vertical winding equipment is used for on-site winding, combined assembly core mold, equipped with spray gun, and the entire winding process is completed by computer according to program settings.

Wrapping process: Make the inner lining layer on the core mold as required, and after gelling, wrap the structural layer according to the specified line shape and thickness.

3.5 Curing

Curing method: Put the formed storage tank into a constant temperature room or take other methods for constant temperature curing. The curing time depends on the material and temperature requirements.

Curing conditions: Under the condition of natural temperature of 5~10 degrees Celsius, use 100 kg of 196# epoxy resin, add 4 additives and stir thoroughly. This mixture is not easy to volatilize and solidify, and can be stored for up to several months and can still be used .

3.6 Subsequent processing

Finishing: The cured FRP storage tank is trimmed, polished, and polished to ensure a flat and smooth surface.

Assembly: Assemble the various components (such as tank top, tank bottom, partition, etc.) together to ensure that the connections are tight and leak-free.

4. Installation and commissioning

On-site installation: The manufactured FRP tanks are installed and commissioned at the production site. Since each tank is processed according to different process parameters, it needs to be installed and commissioned before use.

Testing: The installed tanks also need to be tested for pressure and temperature to ensure the quality and stability of the tanks.