Ductile cast iron articles

Details Ductile cast iron articles Ductile cast iron articles

1976-05-03

1977-08-09

Steiner, Arthur J.

Metal treatment

Compositions

Heat treating

75123CB, 148 12F, 148 39, 428586, C22C 3710

Patent

active

040408752

ABSTRACT:
Articles of manufacture in the form of an annular ductile iron piece at least a portion of which has its carbon content in the form of flattened bodies disposed in planes parallel to the central axis of the piece and normal to the outer surface of the piece, the iron grains of the piece being extended significantly both in a direction parallel to the central axis and in directions which are transverse to the central axis and parallel to planes occupied by the flattened carbon bodies, the outer surface of the piece being smooth and uninterrupted without machining and the article being free from structural failure discontinuities.

REFERENCES:
patent: 1996181 (1935-04-01), Wait
patent: 2759257 (1956-08-01), Schlegel
patent: 3445922 (1969-05-01), Leghorn
patent: 3754429 (1973-08-01), Creuzet
patent: 3780555 (1973-12-01), Balthazar
E. Whitfield, "A Feasibility Study on Cold Extruding of Cast Iron," National Engineering Laboratory, July, 1967, pp. 323-330.
E. Whitfield, "Cold Extrusion of Some Austenitic Cast Irons," National Engineering Laboratory, Mar. 1969, pp. 144-153.

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