Method and die for manufacturing glass fiber reinforced plastic gratings based on vacuum technology, and grating

Abstract

The invention provides a method and a die for manufacturing glass fiber reinforced plastic gratings based on a vacuum technology, and a grating. The method comprises the following steps of: respectively coating a gel coat layer on the lower surface and side face of a groove of a female die of a grating; sequentially laying glass bundles according to the shape of the groove of the female die, wherein the number of laying layers is not less than five; buckling a male die on the female die, and sealing the joint of the male die and the female die; carrying out vacuumization on the male die and the female die which are subjected to sealing; closing a vacuum pump and keeping a sealing state; guiding resins from a vessel to an injection base on the female die; and after the resins are completely cured, carrying out heat emission on the resins so as to form a solid. The method, die and grating disclosed by the invention has the beneficial effects that an integral design is adopted, and the one-step molding of products can be implemented just through carrying out cutting according to required sizes, thereby simplifying the production process; the anti-corrosion performance is improved; the weight of the grating is reduced, and just accounts for 1 / 4 of the weight of a steel-structured grating in the same specification; the roughness of the inner surface is improved; and the processing cost is low, and the price of the grating accounts for 1 / 3 of the price of a steel wire mesh in the same specification.

Description

technical field [0001] The invention relates to an isolating device for ventilation openings of buildings and public facilities, equipment and a manufacturing method required for making the isolating device, in particular to a glass fiber reinforced plastic grid based on a vacuum process, a manufacturing method and a mold. Background technique [0002] The installation position of the wind turbine is generally installed near the tuyere. In order to increase the air intake, the wind turbine is usually set at a higher position from the ground. The weight of the various equipment thus becomes a serious pressure burden on the nacelle of the wind turbine. Among them, when designing the structure of the wind turbine nacelle cover, bird-proof grids will be added to the position of each cooling air duct exhaust and air inlet to ensure the normal operation and work of the wind turbine in the wind field. The raw materials are all galvanized mesh, stainless steel woven mesh, stainless...

AI Technical Summary

Problems solved by technology

Among them, when designing the structure of the wind turbine nacelle cover, bird-proof grids will be added to the position of each cooling air duct exhaust and air inlet to ensure the normal operation and work of the wind turbine in the wind field. The raw materials are all galvanized mesh, stainless steel woven mesh, stainless steel welded mesh, this method is commonly used in China, the steel wire needs to be pultruded, braided, welded and other operations in production, the production process is complicated, because the color of the steel mesh and the The color of the nacelle cover is inconsistent resulting in an unsightly appearance

And metal mesh is usually heavy and poorly insulated

Among them, the galvanized mesh has low stability, easy damage, deformation, and poor anti-corrosion technical problems during use; in order to improve anti-corrosion ability and durability, stainless steel welded mesh or braided mesh is commonly used in national energy, but due to the special nature of stainless steel sex adds a high cost

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