Lamination forming process method for fiber-metal mixed composite material

Abstract

The invention relates to a lamination forming process method for a fiber-metal mixed composite material part. The method includes the following steps that aluminum alloy plates are cut, aluminum alloy and an interlayer material are laid, a stamping die is lubricated, a lamination material is heated, stamped and preformed, a stamping lamination aluminum alloy part is stripped, and the fiber-metal mixed composite material part is thermally pressed and formed. The lamination forming process method is used for forming the fiber-metal mixed composite material part of a curvature structure, compared with the prior art, the method solves the problem that a metal layer and a fiber prepreg layer are difficult to lay in position in gradual transition of the part of the curvature structure, the defect that traditional metal plate forming matching accuracy is low is overcome, the size matching performance of the laid layers in the large-curvature positions of an R region and the like is improved, two types of defects of bridging and collapse are avoided, and the rate of finished products of a large-curvature structural piece of the fiber-metal mixed composite material part is increased.

Description

technical field [0001] The invention relates to a process method for lamination molding of fiber-metal hybrid composite material parts, which mainly relates to forming a fiber-metal hybrid composite material skin or angle material with special structure. Background technique [0002] In the molding process of fiber-metal super-hybrid composites, the currently used process is to manually apply fiber prepreg layers and aluminum alloy layers in the mold. Good operability, but it is difficult to form fiber-metal hybrid composite parts with complex structures, mainly as follows: 1) When a thick metal layer is used to coat complex shapes, due to the poor metal layability, The metal layer is difficult to mold, which makes the shape deviation of the formed parts larger; 2) The metal layer has relatively high toughness and high temperature expansion characteristics. Difficulty; 2) When laying the rounded corner structure, due to the gradient of the curvature radius in the normal dir...

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Problems solved by technology

[0002] In the molding process of fiber-metal hyperhybrid composites, the currently used process method is to manually lay fiber prepreg layers and aluminum alloy layers in the mold. It has good operability, but it is difficult to realize the fiber-metal hybrid composite parts with complex structures. The main performances are: 1) When a thicker metal layer is laid on a complex shape, due to the poor laying property of the metal, The metal layer is difficult to attach to the mold, which causes a large deviation in the shape of the formed part; 2) The metal layer has relatively high toughness and high temperature expansion characteristics. Difficult; 2) When paving the rounded corner structure, due to the gradual change of the radius of curvature in the R zone in the normal direction, it is necessary to make a separate R zone forming tool for each metal layer. Even so, it is difficult to form a good surface transition in the R zone. It is easy to form interlayer defects; 3) The forming problem of variable curvature structural parts cannot be completely overcome. Although it is formed under high pressure in autoclave and other equipment, there will still be slight metal wrinkles in the variable curvature area.

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