Method for preparing tubular chills for continuous steel casting

Details Method for preparing tubular chills for continuous steel casting Method for preparing tubular chills for continuous steel casting

1986-03-05

1987-03-31

Larson, Lowell A.

Metal deforming

Process

Tube making or reshaping

72283, 72391, B21K 2108

Patent

active

046533060

ABSTRACT:
A method is described for the preparation of tubular copper or copper-alloy chills or ingot moulds shaped with their longitudinal axis substantially curved, and comprising a first stage in which the end of a tubular semi-finished product of rectilinear axis is turned-over by cold plastic deformation; a second stage in which said semi-finished product is shaped to give it a curved form; a third stage in which a mandrel having the same shape and outer dimensions as the chill to be obtained is then inserted into said semi-finished product; a fourth stage in which said semi-finished product is passed through an extruder die of such dimensions as to deform the material of said semi-finished product in order to cause the inner surface of said semi-finished product to adhere closely to the outer surface of said mandrel; and a fifth stage in which when said semi-finished product has passed through said die, a substantially axial force is exerted on said mandrel in the opposite direction to the force exerted in the preceding stage, while the end edge of said semi-finished product is rested against counteracting sectors disposed below said die.

REFERENCES:
patent: 616357 (1898-12-01), Reynolds et al.
patent: 1775762 (1930-09-01), Harvey
patent: 1967487 (1934-07-01), Waisner
patent: 2325522 (1943-07-01), Lauer et al.
patent: 3602030 (1971-08-01), Noda et al.
patent: 3646799 (1972-03-01), Kipp et al.

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