Hydraulic deep drawing for forming of spherical shapes
Description
In this methodology, the blank is applied to the the die with the aid of a fluid medium under pressure in order to achieve the final contour. In the process, the blank can continue to flow from the flange area as in conventional deep drawing. It is also possible to use pretreated blanks with a brushed surface which are then protected during the forming process with a layer of film. As opposed to conventional deep drawing only one die half is required. Hydraulic deep drawing is especially well suited for the forming of spherical shapes. In addition, two blanks can be formed at the same time (interior high-pressure forming of blanks). In this process a liquid medium is supplied between the blanks; the upper blank is pressed into the upper cavity/form and the lower blank into the lower cavity/form. The two cavities can be different, but there must be an identical flange gradient to ensure proper sealing of the blanks.
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Hydraulic plate press with closing force of 50,000 kN
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