2. Choice of forming process and temperature
Ferrules (shells with a generally circular cross-section) are mainly produced by bending on a rolling machine. In some cases, step bending is performed on a hydraulic press; this technique is used for heavy plates when a rolling machine of sufficient capacity is not available.
Domed bottoms can be formed using a variety of processes:
stamping with or without blank holder ;
repoussage ;
one-off stamping ;
forming on a forming machine ;
combined procedure involving several of the above operations.
Each of these processes can be carried out either cold or hot.
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Choice of forming process and temperature
Forming processes and technology
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