Forming method for composite product formed by conical metal shell and conical glass reinforced plastic heat-proof layer

Abstract

The invention discloses a forming method for a composite product formed by a conical metal shell and a conical glass reinforced plastic heat-proof layer. The forming method comprises the following steps: 1, forming the conical metal shell; 2, forming the conical glass reinforced heat-proof layer; and 3, sleeving the metal shell by the conical glass reinforced heat-proof layer. Due to the sleeving manner, an aluminum alloy and glass reinforced plastic heat-proof layer composite product is formed by sleeving, and various indexes are controlled when the conical metal shell and the conical glass reinforced plastic heat-proof layer are formed respectively, so that coaxiality between the metal shell and the glass reinforced plastic heat-proof layer is ensured, the quality, the center of mass, centroidal deviation and the roundness of the product are guaranteed, debonding is prevented, and the technical problems occurring when the small-taper long composite product is formed are solved.

Description

technical field [0001] The invention belongs to a molding method of a composite product, in particular to a molding method of a composite product formed of a tapered metal shell and a glass fiber reinforced plastic heat-proof layer. Background technique [0002] The composite product of tapered aluminum alloy and glass fiber reinforced plastic heat-proof layer is a structural method widely used in certain types of products at present, and it has the characteristics of small taper and large length. The heat-resistant performance of the product can be improved by using the FRP heat-resistant layer with overlapping winding at a certain angle, but the curing pressure needs to be increased accordingly. [0003] When manufacturing composite products, if the glass fiber tape is directly wound on the metal shell, the glass fiber tape is wound from the large end to the small end, and the front end of the glass fiber tape will inevitably produce an opening angle, which is prone to poo...

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Problems solved by technology

[0003] When manufacturing composite products, if the glass fiber tape is directly wound on the metal shell, the glass fiber tape is wound from the large end to the small end, and the front end of the glass fiber tape will inevitably produce an opening angle, which is prone to poor bonding. When the fiber tape is wound, it needs to be heated to a certain temperature. After the winding is completed, it needs to be cured under high temperature and pressure. Due to factors such as insufficient rigidity and large differences in thermal expansion coefficients of the two materials, it is easy to cause defects such as instability and debonding of the metal shell during the curing process.

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