Metal fusion bonding – Process – With shaping
Patent
1990-10-05
1992-03-17
Seidel, Richard K.
Metal fusion bonding
Process
With shaping
2281731, 2281736, 228183, 228 151, 29234, 29235, 29890, 29505, 29515, 292835, 100232, 100 42, 72402, B21D 5110, B21D 3900, B23P 1904, B23P 1100
Patent
active
050961110
ABSTRACT:
A method of diametrically contracting a cylindrical body, includes the steps of grasping the cylindrical body with a plurality of elongated grasping members, preparing a cylindrical drawing die having an opening at one end and a tapered inside peripheral surface, drawing the grasping members together with the cylindrical body into the drawing die, through the opening, and applying a compression force to the cylindrical body through the grasping members due to the passage along through the tapered inside peripheral surface, to thereby cause the cylindrical body to be diametrically contracted. During the drawing process, since the cylindrical body does not come into direct contact with the drawing die, neither scratches nor baking cracks are produced on the outside surface of the cylindrical body.
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Inomata Tetsuro
Ishikawa Yasushi
Nakagawa Toshikazu
Sadano Yutaka
Tanioka Shingo
Elpel Jeanne M.
Nippon Steel Corporation
Seidel Richard K.
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