Seamless tube production

Details Seamless tube production Seamless tube production

1987-06-17

1989-01-17

Larson, Lowell A.

Metal deforming

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

During rotation of work

B21B 1904

Patent

active

047980710

ABSTRACT:
This invention concerns a process and an arrangement for the production of seamless tube. An ingot heated to the rolling temperature is pierced in a skew-rolling stand to form a hollow ingot, is later stretched into a tube bloom and is rolled out into a finished tube. In order to improve this familiar process, it is proposed to conduct the stretching immediately after the piercing in the same heat as the latter, in which case the rolled goods is stretched in the same skew-rolling stand, but with a passage direction that is opposite to that of piercing. An arrangement with which this process according to the invention can be implemented is also proposed.

REFERENCES:
patent: 662146 (1900-11-01), Davis
patent: 1936019 (1933-11-01), Horbach et al.

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