US4263496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of welding by electron beam
Assignee: Rolls Royce PLC
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Filing: 1979-05-29
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Granted: 1981-04-21
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Expires: 1999-05-29
Abstract
Abstract A pair of superalloy workpieces are electron beam butt welded and the weld is achieved by pulsing the electron beam and, at the same time, moving it on a circular path. The combined relative traversing of beam and workpieces and circularizing of the beam, causes each pulse of electrons to overlap the metal melted by the previous pulse.
Inventors
- 👤 Tony Medlar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:29
CPC Classifications
B; B23; B23K; B23K15/00; B23K15/0046; B23K15/0053
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
79 words
A method of electron beam butt welding to edges of a nickel base alloy part comprising the steps of: moving the electron beam so that its point of incidence with the plane of the weld follows a generally circular path; simultaneously causing a relative linear movement between the beam and butt joint; and simultaneously pulsing the electron beam at a frequency insuring that each pulse of the electron beam overlaps an area of metal welded by the preceding pulse.
Claim 2
Independent Claim
79 words
A method of electron beam butt welding to edges of a nickel base alloy part comprising the steps of: moving the electron beam so that its point of incidence with the plane of the weld follows a generally circular path; simultaneously causing a relative linear movement between the beam and butt joint; and simultaneously pulsing the electron beam at a frequency insuring that each pulse of the electron beam overlaps an area of metal welded by the preceding pulse.
Claim 3
Dependent Claim
55 words
A method of electron beam butt welding according to claim 1 wherein the motions set forth in said steps of moving the electron beam and causing a relative linear movement result in the diameter of the circular path being substantially equal to twice the relative linear movement occurring between successive pulses of said electron beam.
Claim 4
Dependent Claim
57 words
A method of electron beam butt welding according to claim 2 wherein said step of moving the electron beam comprises the step of moving the electron beam with sufficient speed to form a complete circular path within the time during which an input voltage to an electron beam gun producing the electron beam is at a peak.
Claim 5
Dependent Claim
59 words
A method of electron beam butt welding according to claim 3 wherein said step of moving the electron beam comprises the step of moving the electron beam with sufficient speed to form a complete circular path within 20% of the time during which an input voltage to the electron beam gun producing the electron beam is at a peak.
Claim 6
Dependent Claim
85 words
In a method of electron beam butt welding two edges of a nickel base alloy part including the steps of moving the electron beam so that its point of incidence with the plane of the weld follows a generally circular pattern; and simultaneously causing a relative linear movement between the beam and butt joint, the improvement comprising the step of: pulsing the electron beam at a frequency insuring that each pulse of the electron beam overlaps an area of metal welded by the preceding pulse.
Claim 7
Dependent Claim
85 words
In a method of electron beam butt welding two edges of a nickel base alloy part including the steps of moving the electron beam so that its point of incidence with the plane of the weld follows a generally circular pattern; and simultaneously causing a relative linear movement between the beam and butt joint, the improvement comprising the step of: pulsing the electron beam at a frequency insuring that each pulse of the electron beam overlaps an area of metal welded by the preceding pulse.
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) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |