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BEIHAI YUEDA FRP PRODUCTS
Introduction to the Production Process of Glass Fiber Reinforced Plastic (FRP) Sand-Laden Pipes
Release time:
2021/08/18
Fiberglass reinforced sand pipes are quite common, and most people are familiar with them. But do you know how they are made? Let's take a simple look at the production process with the help of a fiberglass reinforced sand pipe manufacturer. First, the mold used for production needs to be cleaned and smoothed. A special polyester film is wrapped around the surface of the mold to facilitate demolding. Next, the inner lining layer is made. A resin mixed with a certain proportion of catalyst and accelerator is evenly poured onto the surface of the mold, reinforced with alkali-free glass fiber surface mat or other short fiber fabrics, and bubbles are removed using a mesh to ensure overall density. During this process, white spots of varying sizes may appear on the inner lining layer, which is more common in the southern regions. The main reason for the appearance of these white spots is the moisture in the raw materials of the inner lining layer. The third step involves making the winding layer, sandwiched sand layer, and outer protective layer. The designed process parameters are input into a computer, which controls the winding of alkali-free glass fiber yarn soaked in resin until the thickness of the inner winding layer is achieved. It is important to pay attention to the rotation speed of the core mold during winding; increasing the speed can improve production efficiency. However, if the core mold rotates too quickly, the centrifugal force will cause the resin to be thrown out, wasting materials and polluting the environment. Subsequently, the circumferential sand operation is performed, tightly winding the sand material with high tension and circumferential alkali-free fiber yarn until the designed thickness of the sandwiched sand layer is reached. The final step is trimming and demolding. After the pipe has cured, a knife of the corresponding specification is used to trim out the double "O" groove, and resin is evenly applied to its surface. The spigot blank is also cut. Once the resin on the double "O" groove is no longer sticky, a hydraulic demolding machine is used to separate the pipe from the mold, and markings are made in the middle section as required. After production, the product must undergo factory inspection. The inspection items include appearance quality, dimensions, Shore hardness, insoluble resin content, wall component content of straight pipe sections, water pressure leakage, and 15 other items. Each FRPM pipe must be inspected for appearance quality, dimensions (excluding the thickness of the inner lining layer), and Shore hardness. Only after passing all inspections can the product be shipped for use in engineering projects. The above content is sourced from the internet. If there is any infringement, please contact us for removal. Thank you!
Glass fiber reinforced sand pipeI believe everyone has seen it quite a lot, and it is definitely not unfamiliar, but do you know how it is made? Let me briefly introduce its simple production process.Glass fiber reinforced sand pipe manufacturerLet me take you to understand its simple production process.
First, the mold used for production needs to be cleaned and leveled. A special polyester film is wrapped around the surface of the mold to facilitate demolding. Next, the inner lining layer is made. Resin mixed with a certain proportion of catalyst and accelerator is evenly applied to the surface of the mold, reinforced with alkali-free glass fiber surface felt and other short fiber fabrics, and bubbles are removed with a mesh to make it dense overall. During this process, there may be white spots of varying sizes on the inner lining layer of the pipe, which is more common in the south. The main reason for the appearance of white spots is that the raw materials for the inner lining layer have absorbed moisture. Third, the winding layer, sand-clamping layer, and outer protective layer are made. The designed process parameters are input into a microcomputer, which controls the winding of alkali-free glass fiber yarn impregnated with resin until the thickness of the inner winding layer is reached. Pay attention to the rotation speed of the core mold during winding; increasing it can improve the production efficiency of the pipe. However, if the rotation speed is too fast, the resin will be thrown out due to centrifugal force, wasting materials and polluting the environment. Then, the sand-clamping operation is carried out, and the sand-clamping material with greater tension and the circumferential alkali-free fiber yarn are tightly wound until the designed thickness of the sand-clamping layer is reached.Then,trimming and demolding. After the pipe has cured, a knife of the corresponding specification is used to trim out a double "O" groove, and resin is evenly applied to its surface. At the same time, the socket blank is cut. Once the resin on the double "O" groove is not sticky, a hydraulic demolding machine is used to separate the pipe from the mold, and markings are made in the middle section as required.
After production, the product must undergo factory inspection. The factory inspection items include appearance quality, dimensions, Shore hardness, insoluble resin content, wall component content of straight pipe sections, water pressure leakage, and 15 other items. Each FRPM pipe must be inspected for appearance quality, dimensions (excluding inner lining thickness), and Shore hardness. Only after passing all inspections can it leave the factory as material for engineering use.
The above content is sourced from the internet. If there is any infringement, please contact us for deletion. Thank you!
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