Mandrel exchange in piercing mills

Details Mandrel exchange in piercing mills Mandrel exchange in piercing mills

1980-03-10

1983-01-18

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

With modification or control of temperature of work, tool or...

72 97, 72201, 72342, B21B 2700, B21D 3716

Patent

active

043686303

ABSTRACT:
Two water tanks, one behind the other, are disposed adjacent to the rolling gap for a piercing mill; the rolled seamless tube on a mandrel rod passes through both tanks during rolling. The tank closest to the gap contains also a mandrel holder, and following rolling the mandrel is retracted into that tank; this tank, but not the other one, is emptied and the mandrel on the rod is exchanged. The tank is refilled and the next billet can be rolled. Nozzles are provided to prevent water from escaping through openings in tank walls for the tube.

REFERENCES:
patent: 3747385 (1973-07-01), Meurer et al.
patent: 4242895 (1981-01-01), Boshold et al.

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