METAL IN FORM

Brand	Owner (click to sort)	Address	Description
AL 29-4-2	ALLEGHENY LUDLUM CORPORATION	1000 Six PPG Place Pittsburgh PA 15222	METAL IN THE FORM OF [ PLATE, ] STRIP, SHEET, TUBING [ , BAR AND WIRE ] MADE FROM STEEL ALLOYS;No claim is made to the exclusive right to use the numerals 29-4-2, apart from the mark as shown.;
MAXCLAD	TELEDYNE INDUSTRIES, INC.	Dallas TX	Metal in the Form of Steel Plate;
OMNI	ALUMINUM EXTRUSIONS, INC.	530 WEST LOVETT ST. CHARLOTTE MI	METAL IN THE FORM OF EXTRUSIONS, SHEETS, RODS AND THE LIKE, FOR GENERAL USE IN THE INDUSTRIAL ARTS;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

Two metal blocks (50, 52) are welded to respective metal sheets (30, 32) to form sealed assemblies. The sealed assemblies are then diffusion bonded together to form two metal preforms (54, 56). The thick ends (36) and (40) of the metal sheets (30, 32) and the metal blocks (50, 52) are hot formed so that a continuation of the plane X of the first surfaces (42, 46) of the metal sheets (30, 32) extends through and across the metal blocks (50, 52). The metal preforms (54, 56) are machined to remove the portion of the metal blocks (50, 52) extending above the first surfaces (42, 46) of the metal sheets (30, 32) respectively. The metal preforms (54, 56) and a metal sheet (58) are assembled into a stack (64). The metal preforms (54, 56) and the metal sheet (58) are diffusion bonded together and then superplastically formed to produce a hollow fan blade (10). The method enables thinner metal workpieces with better microstructure to be used and increases the yield of metal workpieces.