Metal working – Method of mechanical manufacture – Combined manufacture including applying or shaping of fluent...
Patent
1979-06-13
1982-01-05
Godici, Nicholas P.
Metal working
Method of mechanical manufacture
Combined manufacture including applying or shaping of fluent...
291573V, 164 14, 164 85, 164 72, B22D 11126
Patent
active
043086560
ABSTRACT:
An improved method of making internally slitted strip material wherein a metal billet is cast about friable elongated members of weld preventing material and wherein the billet and elongated members are rolled to thin and elongate the billet and to pulverize the weld preventing material into a fine weld preventing powder for distribution along the spaces occupied by the weld preventing material and which spaces upon the pulverized weld preventing powder being removed form the slits, the improvement wherein prior to casting the metal billet about the elongated members of weld preventing material, the friability of the weld preventing member is enhanced to cause the members to pulverize more evenly and to distribute more evenly along the spaces occupied by the pulverized weld preventing material whereby any tendency of the pulverized powder to leave gaps at which welds are formed during rolling is substantially eliminated and wherein such enhancement is provided by coating the elongated members with a predetermined composition which produces the enhanced friability and which coating also substantially eliminates any intimate contact between the weld preventing members and the metal billet whereby substantially no residue of the weld preventing powder remains on the walls of the slits and hence any tendency of such residue to cause corrosion by galvanic action upon certain fluid flowing through the slits is substantially eliminated.
REFERENCES:
patent: 2983994 (1961-05-01), Johnson
patent: 3036369 (1962-05-01), Wilkins
patent: 3046652 (1962-07-01), Wilkins
patent: 3105296 (1963-10-01), Brick et al.
Godici Nicholas P.
Revere Copper and Brass Incorporated
Rising V. K.
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