US3728780A — Explosive cladding on geometrically non-uniform m…

Claim 1

Independent Claim 333 words

A method of explosively cladding one non-linearly shaped metal upon another non-linearly shaped metal, comprising the steps of: providing a metal base member, having a non-linear shape formed by at least two planar surfaces to be explosively clad, including a first planar surface at an angle to and joined with a second planar surface and forming a first bending knot at the point where the two planar surfaces meet, and positioning said metal base member in a fixed location; placing a metal cladding plate, having a non-linear shape similar in shape to the non-linear shape of said base member, and formed by at least two planar surfaces including a third planar surface joined with a fourth planar surface at a second bending knot, said third and fourth planar surfaces having the same angle as said first and second linear surfaces, a selected distance away from the base member in a first direction, said first and third surfaces being adjacent one another and separated by an interface gap equal to said selected distance; positioning a buffer material on the cladding plate with said cladding plate located between the metal base and the buffer material; placing a predetermined amount of explosive on the buffer material so that the explosive changes its shape and corresponds to the shape of the base member that is to be cladded; igniting the explosive to cause the explosive to burn at a predetermined detonation velocity and to change its explosive front in accordance with the shape of the base member that is to be cladded; forcing said planar surfaces of the base member and of the cladding plate together at a selected collision velocity; and plastically deforming said planar surfaces to create a flow of metal between the surfaces in the form of a jet to remove or break up any unwanted films upon collision of the planar surfaces whereby the surfaces are subjected to great pressures to achieve a metallurgical bond between the base member and the cladding plate.

Claim 2

Independent Claim 333 words

A method of explosively cladding one non-linearly shaped metal upon another non-linearly shaped metal, comprising the steps of: providing a metal base member, having a non-linear shape formed by at least two planar surfaces to be explosively clad, including a first planar surface at an angle to and joined with a second planar surface and forming a first bending knot at the point where the two planar surfaces meet, and positioning said metal base member in a fixed location; placing a metal cladding plate, having a non-linear shape similar in shape to the non-linear shape of said base member, and formed by at least two planar surfaces including a third planar surface joined with a fourth planar surface at a second bending knot, said third and fourth planar surfaces having the same angle as said first and second linear surfaces, a selected distance away from the base member in a first direction, said first and third surfaces being adjacent one another and separated by an interface gap equal to said selected distance; positioning a buffer material on the cladding plate with said cladding plate located between the metal base and the buffer material; placing a predetermined amount of explosive on the buffer material so that the explosive changes its shape and corresponds to the shape of the base member that is to be cladded; igniting the explosive to cause the explosive to burn at a predetermined detonation velocity and to change its explosive front in accordance with the shape of the base member that is to be cladded; forcing said planar surfaces of the base member and of the cladding plate together at a selected collision velocity; and plastically deforming said planar surfaces to create a flow of metal between the surfaces in the form of a jet to remove or break up any unwanted films upon collision of the planar surfaces whereby the surfaces are subjected to great pressures to achieve a metallurgical bond between the base member and the cladding plate.

Claim 3

Dependent Claim 111 words

A method as in claim 1 wherein said first bending knot of the base member and said second bending knot of the cladding plate are spaced from each other in a second direction perpendicular to said first direction, and the distance in said second direction is determined by the formula of l d tan theta /2 where l distance in said second direction between said first and second bending knots of the base member and the cladding plate d distance of the interface gap between the base member and the cladding plate, and theta bending angle between said first and second planar surfaces and between said third and fourth planar surfaces.

Claim 4

Dependent Claim 56 words

A method as in claim 1 wherein the predetermined amount of explosive used is determined by the following formula of L (t Rho sigma y)/d where L weight of explosive per unit area of cladding plate t cladding plate thickness Rho cladding plate density sigma y cladding plate yield strength and d interface gap (standoff distance)

Claim 5

Dependent Claim 24 words

A method as in claim 3 wherein the collision velocity is equal to or less than the sonic velocity of the cladding plate material.

Claim 6

Dependent Claim 21 words

A method as in claim 4 wherein the detonation velocity of the explosive is no greater than 10,000 feet per second.

Claim 7

Dependent Claim 59 words

A method as in claim 1, wherein said base member includes a fifth planar surface joined to said second planar surface at a third bending knot and parallel with said first planar surface, and said cladding plate includes a sixth planar surface joined to said fourth planar surface at a bending knot and parallel to said third planar surface.

Claim 8

Dependent Claim 142 words

A method as in claim 6 wherein said first bending knot of the base member and said second bending knot of the cladding plate are spaced from each other in a second direction perpendicular to said first direction, and the distance in said seconD direction is determined by the formula of l d tan theta /2 where l distance in said second direction between said first and second bending knots of the base member and the cladding plate d distance of the interface gap between the base member and the cladding plate, and theta bending angle between said first and second planar surfaces and between said third and fourth planar surfaces, and said third and fourth bending knots are spaced from each other in said second direction at a distance equal to the distance l between said first and second bending knots.

Claim 9

Dependent Claim 24 words

A method as in claim 1 wherein the collision velocity is equal to or less than the sonic velocity of the cladding plate material.

Claim 10

Dependent Claim 21 words

A method as in claim 8 wherein the detonation velocity of the explosive is no greater than 10,000 feet per second.

Claim 11

Dependent Claim 56 words

A method as in claim 9 wherein the predetermined amount of explosive used is determined by the following formula of L (t Rho sigma y1d where L weight of explosive per unit area of cladding plate t cladding plate thickness Rho cladding plate density sigma y cladding plate yield strength and d interface gap (standoff distance).

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1976-04-23	1976-10-23	1977-04-24	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1980-04-23	1980-10-23	1981-04-24	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1984-04-23	1984-10-23	1985-04-24	$7700.00	Window Closed / Lapsed

Explosive cladding on geometrically non-uniform metal material

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