US4527040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of laser welding
Assignee: United States Department of the Navy
•
Filing: 1983-06-16
•
Granted: 1985-07-02
•
Expires: 2003-06-16
Abstract
Abstract A method of welding two HY-steel members to produce a weld joint having improved impact toughness. The surface to be welded are first machined, roto-blasted and cleaned with acetone. Then, an insert of Inconel 600 is provided and cleaned with acetone. Next, the Inconel 600 insert is introduced between the surfaces to be welded and the HY-steel members are butted against the insert. Then, a laser welding beam is applied to the Inconel 600 insert to weld together the assembly of steel members and insert.
Inventors
- 👤 Deug W. Moon
- 👤 Edward A. Metzbower
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:08
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/3033; B23K35/304; B23K26/00; B23K26/20; B23K26/32; B23K2103/00; B23K2103/02; B23K2103/04; B23K2103/50
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
90 words
A method of welding two structural steel members to produce a weld joint having improved impact toughness comprising the step of: (a) introducing an inoculant comprising an insert of Inconel 600 in the range of 0.005 inch in thickness between the surfaces of the two steel members to be welded ranging in composition from HY-80 to HY-100 steel; (b) butting the surfaces to be welded of the two members against the inoculant; and (c) applying a laser beam to the inoculant to weld together the assembly of members and inoculant.
Claim 2
Independent Claim
90 words
A method of welding two structural steel members to produce a weld joint having improved impact toughness comprising the step of: (a) introducing an inoculant comprising an insert of Inconel 600 in the range of 0.005 inch in thickness between the surfaces of the two steel members to be welded ranging in composition from HY-80 to HY-100 steel; (b) butting the surfaces to be welded of the two members against the inoculant; and (c) applying a laser beam to the inoculant to weld together the assembly of members and inoculant.
Claim 3
Independent Claim
96 words
A method of welding two steel members to produce a weld joint having improved impact toughness comprising the steps of: (a) roto-blasting the surfaces to be welded of the two steel members; (b) cleaning the surfaces to be welded of the two steel members; (c) introducing an inoculant comprising an insert of Inconel 600 between the surfaces to be welded of the two members; (d) butting the surfaces to be welded of the two members against the inoculant; and (e) applying a laser beam to the inoculant to weld together the assembly of members and inoculant.
Claim 4
Independent Claim
96 words
A method of welding two steel members to produce a weld joint having improved impact toughness comprising the steps of: (a) roto-blasting the surfaces to be welded of the two steel members; (b) cleaning the surfaces to be welded of the two steel members; (c) introducing an inoculant comprising an insert of Inconel 600 between the surfaces to be welded of the two members; (d) butting the surfaces to be welded of the two members against the inoculant; and (e) applying a laser beam to the inoculant to weld together the assembly of members and inoculant.
Claim 5
Dependent Claim
26 words
The method recited in claim 2 including the step of: machining the surfaces to be welded of the two steel members prior to the roto-blasting step.
Claim 6
Dependent Claim
30 words
The method recited in claim 3 including the step of: cleaning the insert prior to the step of introducing it between the surfaces to be welded of the two members.
Claim 7
Dependent Claim
11 words
The welded assembly produced by the method recited in claim 1.
Claim 8
Independent Claim
121 words
A method of welding two steel members to produce a weld joint having improved impact toughness, comprising the steps of: (a) machining the surfaces to be welded of the two steel members; (b) roto-blasting the surfaces to be welded of the two steel members; (c) cleaning the surfaces to be welded of the two steel members; (d) providing an insert of Inconel 600; (e) cleaning the Inconel 600 insert; (f) introducing the Inconel 600 insert between the surfaces to be welded of the two steel members; (g) butting the surfaces to be welded of the two steel members against the insert; and (h) applying a laser welding beam to the insert to weld together the assembly of steel members and insert.
Claim 9
Independent Claim
121 words
A method of welding two steel members to produce a weld joint having improved impact toughness, comprising the steps of: (a) machining the surfaces to be welded of the two steel members; (b) roto-blasting the surfaces to be welded of the two steel members; (c) cleaning the surfaces to be welded of the two steel members; (d) providing an insert of Inconel 600; (e) cleaning the Inconel 600 insert; (f) introducing the Inconel 600 insert between the surfaces to be welded of the two steel members; (g) butting the surfaces to be welded of the two steel members against the insert; and (h) applying a laser welding beam to the insert to weld together the assembly of steel members and insert.
Claim 10
Dependent Claim
15 words
The method recited in claim 6 wherein: step (b) is accomplished with a carbon-dioxide laser.
Claim 11
Dependent Claim
19 words
The method recited in claim 7 wherein step (h) includes the step of: protecting the weld with helium gas.
Claim 12
Dependent Claim
12 words
The method recited in claim 8 wherein: the steel is HY-80 steel.
Claim 13
Dependent Claim
12 words
The method recited in claim 8 wherein: the steel is HY-100 steel.
Claim 14
Dependent Claim
11 words
The welded assembly produced by the method recited in claim 4.
Claim 15
Independent Claim
141 words
A method of welding two HY- steel members to produce a weld joint having improved impact toughness, comprising the steps of: (a) machining the surfaces to be welded of the two HY- steel members; (b) roto-blasting the surfaces to be welded of the two HY- steel members; (c) cleaning the surfaces to be welded of the two HY- steel members; (d) providing an insert of Inconel 600; (e) cleaning the Inconel 600 insert; (f) introducing the Inconel 600 insert between the surfaces to be welded of the two HY- steel members; (g) butting the surfaces to be welded of the two HY- steel members against the insert; and (h) applying a continuous wave, carbon-dioxide laser welding beam to the insert to weld together the assembly of HY- steel members and insert; wherein step (h) includes protecting the weld with helium gas.
Claim 16
Independent Claim
141 words
A method of welding two HY- steel members to produce a weld joint having improved impact toughness, comprising the steps of: (a) machining the surfaces to be welded of the two HY- steel members; (b) roto-blasting the surfaces to be welded of the two HY- steel members; (c) cleaning the surfaces to be welded of the two HY- steel members; (d) providing an insert of Inconel 600; (e) cleaning the Inconel 600 insert; (f) introducing the Inconel 600 insert between the surfaces to be welded of the two HY- steel members; (g) butting the surfaces to be welded of the two HY- steel members against the insert; and (h) applying a continuous wave, carbon-dioxide laser welding beam to the insert to weld together the assembly of HY- steel members and insert; wherein step (h) includes protecting the weld with helium gas.
Claim 17
Dependent Claim
19 words
The method recited in claim 12 wherein: the surfaces to be welded are cleaned with acetone in step (c).
Claim 18
Dependent Claim
18 words
The method recited in claim 13 wherein: the Inconel 600 insert is cleaned with acetone in step (e).
Claim 19
Dependent Claim
11 words
The welded assembly produced by the method recited in claim 12.
References Cited (Backward Citations)
US3303319A
Cited
US3463898A
Cited
US3560700A
Cited
US3585350A
Cited
US3808395A
Cited
US3975612A
Cited
US3949186A
Cited
US4001543A
Cited
US4063062A
Cited
US4152573A
Cited
US4080525A
Cited
US4219720A
Cited
US4341942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |