Patent US3813758A successfully refreshed from Google Patents.
US3813758A
Expired / Lapsed
US
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Explosive welding process
Assignee: NOF Corp
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Filing: 1971-12-14
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Granted: 1974-06-04
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Expires: 1991-12-14
Abstract
Abstract An explosive welding process for bonding at least one cladding metal sheet to a base metal sheet, by driving one of the two metallic sheets toward the other by the collision impact of a driver plate to said one sheet. The collision of the driver plate is actuated by the detonation of an explosive layer disposed on its surface.
Inventors
- 👤 M Araki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:50
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/06; B23K20/08
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
136 words
The explosive welding process as defined in claim 1, further comprising the steps of disposing a detonating driver plate so as to face the explosive layer with a spacing equivalent to one-twentieth to 25 times the thickness of the detonating drive plate, providing an initiator layer on the detonating driver plate on the surface of the latter facing away from the explosive layer, and firing the initiator layer to cause the detonating driver plate to collide with and detonate the explosive layer, the initiator layer being so related with said spacing between the detonating driver plate and the explosive layer that the latter is detonated with a detonating wave front which is slanted toward the detonating direction of the explosive layer with an angle not greater than 60* relative to the plane of the driver plate.
Claim 2
Dependent Claim
38 words
The explosive welding process as defined in claim 2, wherein the spacing between the explosive layer and the detonating drive plate is filled with a foamed high-molecular compound with an apparent density of 0.01 g/cm3 to 0.4 g/cm3.
Claim 3
Dependent Claim
30 words
The explosive welding process as defined in claim 2, wherein the detonating wave is slanted with an angle not greater than 60* relative to the plane of the explosive layer.
Claim 4
Dependent Claim
45 words
The explosive welding process as defined in claim 1 wherein the protective layer fills the spacing between the sheet to be driven and the driver plate, which protective layer consists of a foamed high-molecular compound with an apparent density of 0.01 g/cm3 to 0.4 g/cm3.
Claim 5
Dependent Claim
26 words
The explosive welding process as defined in claim 1 wherein the sheet to be driven is slanted by 0.5* to 20* relative to the other sheet.
Claim 6
Dependent Claim
24 words
The explosive welding process as defined in claim 1, wherein the driver plate is slanted by 0.5* to 20* relative to the protective layer.
Claim 7
Dependent Claim
18 words
The explosive welding process as defined in claim 1, wherein the base metal sheet consists of mild steel.
Claim 8
Dependent Claim
50 words
The explosive welding process as defined in claim 1, wherein the cladding metal sheet consists of a metal selected from the group consisting of titanium, stainless steel, Hastelloy, brass, bronze, copper zirconium, nickel, tantalum, silver, gold, platinum, tungsten, niobium, chronium, cobalt, aluminum, molybdenum, magnesium, vanadium, zinc, tin and their alloys.
Claim 9
Dependent Claim
35 words
The explosive welding process as defined in claim 2, wherein said detonating driver plate is at least as wide as the effective area of the driver plate and is 0.3 mm to 3 mm thick.
Claim 10
Dependent Claim
41 words
The explosive welding process as defined in claim 1, wherein the thickness of the protective layer is tapered so as to provide varying time delays in the delivery of the collision impact of the driver plate to the cladding metal sheet.
Claim 11
Dependent Claim
24 words
The explosive welding process as defined in claim 1, wherein the driver plate is larger than the cladding metal sheet by any side thereof.
Claim 12
Dependent Claim
28 words
The explosive welding process As defined in claim 1, wherein the thickness of the driver plate is 0.3 to 10 times the thickness of the cladding metal sheet.
Claim 13
Dependent Claim
38 words
The explosive welding process as defined in claim 1, wherein at least two cladding metal sheets are disposed between the driver plate and the base metal sheet for bonding the cladding metal sheets to the base metal sheet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |