Upsetting of tube ends

Details Upsetting of tube ends Upsetting of tube ends

1978-12-11

1980-07-15

Larson, Lowell A.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

Clamp structure constitutes sole initial metal-deforming...

72354, 72359, B21K 2112

Patent

active

042121833

ABSTRACT:
A method and apparatus for upsetting a tube end using a one-piece upset die. The tube is heated at the end to be upset and secured in a gripper clamp so as to remain stationary during the upset operation. The upset die is hydrualically forced over the tube end and a mandrel is hydraulically positioned into the tube end. A longitudinal compressive force is then hydraulically applied to upset the tube end. The upset die is hydraulically pulled off the upset tube and thereby accomplishing removal of the tube from the one-piece die without damage to the tube or the die.

REFERENCES:
patent: 2548702 (1951-04-01), Chamberlain
patent: 2932889 (1960-04-01), Kritscher
patent: 3224243 (1965-12-01), Van Deberg

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