Method of producing seamless tube mill piercer mandrel

Details Method of producing seamless tube mill piercer mandrel Method of producing seamless tube mill piercer mandrel

1975-05-08

1976-11-09

Moon, Charlie T.

Metal tools and implements, making

Blank or process

Die

29516, 138140, 228127, 228175, B21K 520, B21D 3904, B23K 1300

Patent

active

039903303

ABSTRACT:
A laminate tube structure produced by stretch reducing, in combination, a pair of tubes. The resultant tube structure is particularly adapted for use as a mandrel for supporting a piercing point of a seamless-tube mill.

REFERENCES:
patent: 831887 (1906-09-01), Nicholson
patent: 1839964 (1932-01-01), Harvey
patent: 2177435 (1939-10-01), Kretz
patent: 3149513 (1964-09-01), Dallens
patent: 3372462 (1968-03-01), Reid et al.
patent: 3863328 (1975-02-01), Arntz

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