Injecting manual pasting mixing and forming technology for glass fiber reinforced plastics chamber cover die of wind turbine

Abstract

The invention discloses an injecting manual pasting mixing and forming technology for a glass fiber reinforced plastics chamber cover die of a wind turbine. The technology comprises the steps of: processing a die, injecting a gel-coated layer, manufacturing a surface layer, manufacturing a reinforcing layer, reinforcing the die, and removing the die. According to the technology, the injecting step and the manual pasting step are combined to achieve formation, so that the surface water resistance and the interlaminar strength of a glass fiber reinforced plastics product can be improved; the usage cost of raw materials is reduced; the working strength of operators is reduced; the production efficiency is improved; the integrity of the internal function and external furnace of the chamber cover of the wind turbine is ensured, and the requirement on working in bad conditions can be met; and according to the technology, the production period is reduced, the mass production can be achieved, the stability of the product quality can be ensured, the stability of the product performance is high, about 8% of the materials can be saved, 10% of processing hours can be reduced, the production cost can be reduced, and an obvious economic benefit is provided.

Description

technical field [0001] The invention relates to a molding process of a wind turbine cabin cover mold, in particular to a jet hand lay-up mixing molding process for a glass fiber reinforced plastic wind turbine cabin cover mold. Background technique [0002] The material of the wind turbine canopy is generally FRP, and the manufacturing of the wind turbine canopy is more generally carried out by open hand lay-up molding process or L-RTM (lightweight resin transfer molding) derived from the traditional RTM (resin transfer molding) manufacturing process. Molding) manufacturing process, in which the open hand lay-up process is a process in which fiberglass fabrics and resin are alternately laid on the mold by hand, and then solidified and formed. The equipment is simple, the investment is small, and the forming is not limited by the size and shape of the product. , but the disadvantages of using this method for production are low efficiency, long production cycle, not suitable f...

AI Technical Summary

Problems solved by technology

[0002] The material of the wind turbine canopy is generally FRP, and the manufacturing of the wind turbine canopy is more generally carried out by open hand lay-up molding process or L-RTM (lightweight resin transfer molding) derived from the traditional RTM (resin transfer molding) manufacturing process. Molding) manufacturing process, in which the open hand lay-up process is a process in which fiberglass fabrics and resin are alternately laid on the mold by hand, and then solidified and formed. The equipment is simple, the investment is small, and the forming is not limited by the size and shape of the product. , but the disadvantages of using this method for production are low efficiency, long production cycle, not suitable for mass production, product quality is not easy to control, product performance stability is poor, and the production environment is poor, smelly, dusty, easy to cause construction personnel Injury, and the L-RTM manufacturing process is a process method that combines a vacuum negative pressure system to inject resin into a closed mold to infiltrate the reinforcement material and cure it. The worker only needs to put the designed fiber preform into the mold and close the mold. The subsequent process is completely completed and guaranteed by the mold and injection system, with high degree of automation, high production efficiency, stable product quality, no resin exposure during the production process, friendly working environment, low labor intensity of workers, and no impact on the technology and environment of workers. The requirements are far lower than the hand lay-up process and can effectively control the product quality, and the quality of the inner and outer surfaces of the manufactured products is good. Therefore, the L-RTM manufacturing process has gradually replaced the open hand lay-up molding process for FRP products due to its above advantages. However, in the usual L-RTM manufacturing process, the upper mold and the lower mold are tightly sealed by bolts, which not only increases the weight of the mold, but also requires a lot of time and manpower to operate, and there is no system for leak detection , The perfect technical solution hinders the production to some extent, and the resin infusion process needs to use multiple resin injection machines to complete, the energy consumption is high, and the cost of purchasing and maintaining resin injection machines is high

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