| 摘要 |
<p>Forming a tubular workpiece (19) by applying fluid pressure (21) to the interior of the workpiece (19) and enclosing the pressurized workpiece (19) in a die (11, 12) that has a die cavity (18). A portion or the whole of the die cavity (18) has its internal periphery smaller than the external periphery of the workpiece (19). This subjects the workpiece (19) to compressive forming.</p> |
