US3798010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Explosion bonded aluminum to steel
Assignee: ETI EXPLOSIVES TECHNOLOGIES INTE
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Filing: 1971-02-11
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Granted: 1974-03-19
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Expires: 1991-02-11
Abstract
Abstract Composite products of certain aluminum and steel layers metallurgically bonded together over at least 90 percent of their interface by a substantially diffusionless wavy bond containing, by area, at least about 70 percent direct aluminum-to-steel bonding are prepared by an improved explosion-bonding process wherein at least one layer of aluminum is caused to collide progressively with a layer of steel at a velocity of about from 2,500 to 3,400 meters/sec. and at an impact angle of about from 14* to 25*, the opposed surfaces of said layers being disposed at an angle of less than 5* prior to detonation of said explosive.
Inventors
- 👤 W Sharp
- 👤 T Enright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:35
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/01; B32B15/012; B23; B23K; B23K20/00; B23K20/06; B23K20/08; H; H01; H01R; H01R4/00; H01R4/58; H01R4/62; H01R4/625; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/94; Y10T; Y10T428/00; Y10T428/12; Y10T428/12472; Y10T428/12486; Y10T428/12493; Y10T428/12639; Y10T428/12646; Y10T428/12653; Y10T428/12736; Y10T428/1275; Y10T428/12757; Y10T428/12764
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
37 words
An explosion-bonded composite of claim 1 wherein the layers have an interfacial area of at least 1 square foot, and the aluminum layer bonded directly to steel contains less than 2.1 percent magnesium plus silicon, by weight.
Claim 2
Dependent Claim
52 words
A transition-joint assembly comprising an aluminum structural component, a steel structural component, and a composite of claim 1, said aluminum component being welded to said composite''s layer of aluminum whose yield strength before bonding is above 17,000 psi, and said steel component being welded to the layer of steel of said composite.
Claim 3
Dependent Claim
18 words
An assembly of claim 3 wherein said aluminum and said steel structural components are components of a ship.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |