| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and equipment for a hydraulic press able to make the outer shape of preformed products be press formed favourably even though it is swollen big at its initial stage press. SOLUTION: In the hydraulic press way, a pre-formed product 3 with a part 2 like a cylinder is filled with a liquid, compressed to increase is content of a part 2 like a cylinder while pressing from up and down of its axial direction, and fabricated to a required shape by increasing the hydraulic press in a hydraulic press room 7, which is closed and formed inside a part 2 like a cylinder, to a copied type 6 in its periphery. When an aforementioned hydraulic press room 7 is formed, its hydraulic press way is planned to replenish a liquid equivalent to a vacant capacity while maintaining its hydraulic press in a hydraulic press room 7, which is formed between a part 2 like a cylinder of pre-formed product 3 and a copied type 6.
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