Manufacturing method of slender carbon fiber composite material square tube structural member

The invention discloses a manufacturing method of a long and thin carbon fiber composite material square tube structural part. The method comprises the following steps that firstly, a mold is prepared, S2, laying and positioning are conducted, S3, carbon fiber prepreg is laid and pasted, S4, a part is cured and formed, S5, a pressure equalizing plate 21 and a pressure equalizing plate 22 are removed, S6, a male mold is removed, laid and pasted, S7, the part is detected, and S8, the part is trimmed. According to the auxiliary tool, the precision requirements of the inner profile and the outer profile of a product are guaranteed, the stability of the demolding quality of the product is guaranteed, flanging laying is adopted in the carbon fiber prepreg laying process, the follow-up product auxiliary demolding effect is achieved, the peripheral flanging of the product is jacked through an ejector rod and an ejector block in the auxiliary tool, and a male mold can be slowly demolded through a threaded rod; after t