Manufacturing process of propeller and large efficient blade propeller of fan
A fan blade and manufacturing process technology, which is applied in the field of propeller and large-scale high-efficiency fan blade manufacturing technology, can solve the problems that foam cannot provide enough support, complex molding methods, poor structural tightness, etc., and achieve light weight, high yield, and internal good tightness
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[0029] The detailed description and technical content of the present invention are described below in conjunction with the accompanying drawings. However, the accompanying drawings are only provided for reference and description, and are not used to limit the present invention.
[0030] according to Figure 5 , 6 As shown, the manufacturing process of propellers and large-scale high-efficiency fan blades adopts the hollow pressurization method: it is a new method of pressurizing inside and outside the mold, which can obtain extremely high air pressure, up to 30 standard atmospheres.
[0031] (Pre-intrusion concept; it is the raw material for epoxy resin pre-invasion of reinforced fibers in composite materials with precision pre-intrusion equipment.)
[0032] Prepare the necessary outer mold for making the propeller, and also prepare the preform of polystyrene foam board. The preform has the same structure as the propeller to be manufactured, but the size is reduced by a circle. The pr...
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