Metal deforming – With cutting – Machining after final metal-deforming
Patent
1982-12-30
1985-07-09
Crane, Daniel C.
Metal deforming
With cutting
Machining after final metal-deforming
72369, 72342, 291573R, 165177, 164447, B21D 5116, B21D 2800, B23P 1300
Patent
active
045274118
ABSTRACT:
A process for manufacturing a walking bar member for continuous casting from an elongated tubular metal blank by heating the blank at a temperature of 550.degree. to 1250.degree. C., subjecting the heated blank to plastic working which achieves a working ratio of up to 65% or a flattening ratio of over 1 but not greater than 3.0 to flatten the blank into a tubular body by compression over the entire length thereof, and machining a surface of the tubular body at the side thereof to be brought into contact with a slab to smooth the surface and provide a reduced wall thickness, the working ratio and the flattening ratio being represented by (D-H)/D.times.100 and W/H, respectively, wherein D is the outside diameter of the blank before the plastic working, H is the minor diameter of the tubular body after the plastic working, and W is the major diameter of the tubular body after the plastic working.
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Amako Shinji
Shinosaki Akira
Crane Daniel C.
Kubota Ltd.
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