Hydroforming press for producing heat exchanger plates from wide metal sheets comprises annular tie rods containing opposite-lying molded pieces with a charging and removal opening formed between them

摘要

Hydroforming press comprises annular tie rods (1) containing opposite-lying molded pieces (2, 2') with a charging and removal opening formed between them. A flat molding piston is formed in the upper or lower molding piece. The cross-sectional surfaces of the molding piston completely extend over the deforming region. Preferred Features: The tie rods are circular, oval or elliptical. Spacers are inserted on the left and the right into the tie rods to form a pre-tensioned part.