Patent US4337886A successfully refreshed from Google Patents.
US4337886A
Expired / Lapsed
US
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Welding with a wire having rapidly quenched structure
Assignee: RTX Corp
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Filing: 1980-04-28
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Granted: 1982-07-06
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Expires: 2000-04-28
Abstract
Abstract A wire of a normally nonforgeable composition, having improved resistance to fracture during working, handling and use is comprised of a portion with a rapidly quenched structure as a continuous stratum along its length. A preferred wire useful for fusion welding has a circular cross section with a microcrystalline surface portion of at least 30 volume percent of the wire. Other preferred wires have elliptical or rectangular cross sections with amorphous strata continuous along their lengths.
Inventors
- 👤 William H. King
- 👤 Bernard H. Kear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:16
CPC Classifications
C; C22; C22C; C22C45/00; B; B23; B23K; B23K35/00; B23K35/02; B23K35/0255; B23K35/0261; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/304; B23K35/3046; B23K35/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
95 words
The method of fusion welding a superalloy workpiece which comprises heating the workpiece locally with a welding heat source and introducing weld filler wire into the vicinity of the workpiece where it is heated, to cause melting of the wire and fusion thereof with the superalloy workpiece, characterized by imparting to the weld filler wire a rapidly quenched structure prior to the introduction thereof into the vicinity of the heated workpiece, to make the wire at least partially amorphous or microcrystalline and to thereby provide a ductile portion on an otherwise brittle weld filler wire.
Claim 2
Independent Claim
95 words
The method of fusion welding a superalloy workpiece which comprises heating the workpiece locally with a welding heat source and introducing weld filler wire into the vicinity of the workpiece where it is heated, to cause melting of the wire and fusion thereof with the superalloy workpiece, characterized by imparting to the weld filler wire a rapidly quenched structure prior to the introduction thereof into the vicinity of the heated workpiece, to make the wire at least partially amorphous or microcrystalline and to thereby provide a ductile portion on an otherwise brittle weld filler wire.
Claim 3
Dependent Claim
15 words
The method of claim 1 wherein the weld filler wire is a precipitation hardened alloy.
Claim 4
Dependent Claim
20 words
The process of claim 1 wherein the surface stratum portion comprises at least 20 percent by volume of the wire.
Claim 5
Dependent Claim
30 words
The method of claim 2 wherein the wire stratum has a nominal grain size no greater than 10 microns and hardening phases of an order of 0.1 microns in size.
References Cited (Backward Citations)
US745786A
Cited
US2825108A
Cited
US3838185A
Cited
US3845805A
Cited
US3812901A
Cited
US3938583A
Cited
US3862658A
Cited
US3881541A
Cited
US3881540A
Cited
US4042383A
Cited
US4025314A
Cited
US4122240A
Cited
US4148973A
Cited
US4219592A
Cited
US4169744A
Cited
US4250229A
Cited
US4260666A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-07-05 | 1986-01-04 | 1986-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-07-05 | 1990-01-04 | 1990-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-07-05 | 1994-01-04 | 1994-07-06 | $7700.00 | Window Closed / Lapsed |