METHOD FOR MANUFACTURING COMPOSITE PART OF COMPLEX SHAPE Russian patent published in 2022 - IPC B29C70/46 

FIELD: composite materials.

SUBSTANCE: invention relates to a method for manufacturing a three-dimensional composite part with a thermoplastic matrix and solid gain. According to the invention, the method includes stages, at which a workpiece of a three-dimensional shape is obtained by means of three-dimensional binding, which is pre-impregnated with polymer creating the matrix, and which corresponds to a three-dimensional shape of the final part. The workpiece of a three-dimensional shape is placed between a punch and a stamp coupled with the punch of a tool having open and closed state and containing a working gap between the punch and the stamp, defining a sealed closed cavity between the punch and the stamp, when the tool is closed. The tool is closed in such a way that to apply the first pressure to the specified three-dimensional workpiece. The closed cavity is heated to the melting point of polymer impregnating the workpiece, maintaining the first pressure. The cavity containing the workpiece is cooled to a temperature providing for extraction from a mold, maintaining the second pressure. The mold is opened, and the workpiece of a three-dimensional shape is extracted from it.

EFFECT: invention provides for an increase in mechanical properties of products.

13 cl, 5 dwg