Manufacturing method of net-size H-shaped structures

Abstract

The invention provides a manufacturing method of net-size H-shaped structures. The manufacturing method comprises the following steps that A, a prefabricated body die, an upper main die and a lower main die are prepared; B, two C-shaped structures are paved and pasted on the prefabricated body die and trimmed to the net size; C, layers of prepreg are paved and pasted on the upper main die and thelower main die correspondingly, and turnup edges are reserved; D, C-shaped structure fabricated bodies are paved on the upper main die and the lower main die correspondingly, then die closing is carried out, and the turnup edges are turned up; E, rafter strip parts are paved and pasted, and silicone rubber strips are used for carrying out covering and compacting; and F, ventilated felts and vacuumbags are coated, and the vacuum bags are pressed, solidified and formed. According to the manufacturing method, the prefabricated body die is adopted, the structure forming efficiency is improved, meanwhile, the net-size forming manner is adopted, the H-shaped structures can be directly applied to overall structures of some composite materials, and machining risks are effectively avoided.

Description

technical field [0001] The invention relates to a method for preparing an I-shaped structure with net size. Background technique [0002] At present, in the preparation of I-shaped structures of composite materials, post-processing of rafter strips is generally used to achieve the required size, which increases the risk of delamination of rafter strips and reduces the efficiency of structure forming. Contents of the invention [0003] In order to solve the above problems, the present invention provides a method for preparing an I-shaped structure with a net size, which solves the risk of delamination of rafters in the prior art, and improves the service life and molding efficiency of the product. [0004] In order to achieve the above object, the present invention is achieved through the following technical solutions: [0005] The present invention is a kind of preparation method of net size I-shaped structure, and preparation method comprises the following steps: [000...

AI Technical Summary

Problems solved by technology

[0002] At present, in the preparation of I-shaped structures of composite materials, post-processing of rafters is generally used to achieve the required size, which increases the risk of delamination of rafters and reduces the efficiency of structure forming.

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