Process for the production of composite parts through a combination of expanding, deep drawing and subsequent massive forming

摘要

The invention relates to a method for producing a composite part (28) formed from core material (3) and shell material (2) by means of a deep-drawing process (6), wherein in a first process step the shell material (28) covering at least part of the process-based composite part (28) on the outside. 2) is produced by a deep-drawing process (6) from a sheet-metal blank (1), in which the core material (3) is used as a stamp insert for deep-drawing the shell material (2), the shell material (2) and core material (3) in tight Surface contact with each other, and then the preformed hybrid semi-finished product (14) made of deep-drawn shell material (2) and partially enclosed core material (3) is subjected to a joint forming process (13) in which the final shape of the composite part (28) is produced in a plastic-forming manner. Here, the sheet-like blank (1) for the shell material (2) is provided with at least one perforation (17) and the core material (3) in the area of the at least one perforation (17) is expanded and deep-drawn the sheet-like blank (1) so that the covering material (2) in the area of the section (16) of the core material (3) to be coated is applied to the core material (3), after which the core material (3) and the covering material (2) applied to the core material (3) by means of a further joint Massive deformation (13) is further deformed.