US3596346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for joining metals
Assignee: RTX Corp
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Filing: 1969-04-02
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Granted: 1971-08-03
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Expires: 1989-04-02
Abstract
Abstract A process for joining metals is described wherein the metals are concurrently coated and diffusion bonded in a dry impregnating pack at a temperature of 2,000*-2,550* F.
Inventors
- 👤 Stanley G Berkley
- 👤 Irwin Segalman
- 👤 Perry Goldberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:57
CPC Classifications
B; B23; B23K; B23K20/00; B23K20/14; B23K35/00; B23K35/22; B23K35/38; C; C23; C23C; C23C10/00; C23C10/06; C23C10/08; C23C10/10; C23C10/12; C23C10/28; C23C10/34; C23C10/36; C23C10/38; C23C10/40; C23C10/42
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
13 words
A process according to claim 1 wherein: the coating vapor is metallic chromium.
Claim 2
Dependent Claim
49 words
A process for joining components formed of the nickel-base and cobalt-base alloys which comprises: positioning the components together with the surfaces to be joined in intimate contact; and concurrently coating and diffusion bonding the components together in a pack cementation process at a temperature in excess of 2,000 F.
Claim 3
Dependent Claim
83 words
A process for joining components formed of the nickel-base and cobalt-base alloys which comprises: embedding the components in a dry impregnating pack comprising a source of chromium vapor, a source of halogen vapor, and an inert mineral filler material, with the surfaces to be joined positioned in intimate contact; and heating the pack to a temperature of at least 2,000 F. to coat the components to a thickness of at least 0.001 inch and to concurrently diffusion bond said surfaces of the components.
Claim 4
Dependent Claim
29 words
A process according to claim 4 in which: the pack is heated to a temperature of 2,000*-2,550* F.; and the components are coated to a thickness of 0.002-0.005 inch.
Claim 5
Dependent Claim
50 words
A process for joining two nickel-base alloy components which comprises: positioning the components with the surfaces to be joined in intimate contact; and concurrently diffusion bonding said surfaces chromizing the components in a pack cementation process at a temperature of 2, 000*-2,550* F. to a coating depth of 0.002-0.005 inch.
Claim 6
Dependent Claim
15 words
A process according to claim 6 wherein: the alloy is a dispersion strengthened nickel-base alloy.
Claim 7
Dependent Claim
19 words
A process according to claim 7 wherein: the alloy consists essentially of about 2 weight percent thoria, balance nickel.
References Cited (Backward Citations)
US3088192A
Cited
US3145466A
Cited
US3108013A
Cited
US3096205A
Cited
US3257230A
Cited
US3497945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |