US3566073A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Out-of-position automatic cored welding electrode
Assignee: Lincoln Electric Co
•
Filing: 1968-04-03
•
Granted: 1971-02-23
•
Expires: 1988-04-03
Abstract
Abstract Coredtype arc-welding steel electrode particularly intended for out-of-position welding wherein the ingredients in the core provide a pinch-effect type metal transfer at relatively low arc currents as well as a viscous slag which prevents the molten metal in the weld pool from being pulled out of the weld pool by the force of gravity. The ingredients making up the core provide a CaF2 metallic oxide slag system which provides a shielding action to the arc, plus as an essential ingredient(s), a compound of barium or strontium or both.
Inventors
- 👤 Thomas Joseph Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:21
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/36; B23K35/3601; B23K35/3603; B23K35/3605
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
105 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients 0.34- 5.56 of one or more highly reactive deoxidizer (s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium, and the like; 1.19- 12.41 of one or more materials selected from the class consisting of calcium fluoride, the halides of the alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; and barium and/or strontium and/or compounds thereof in the amounts of .17- 5.10.
Claim 2
Dependent Claim
105 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients 0.34- 5.56 of one or more highly reactive deoxidizer (s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium, and the like; 1.19- 12.41 of one or more materials selected from the class consisting of calcium fluoride, the halides of the alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; and barium and/or strontium and/or compounds thereof in the amounts of .17- 5.10.
Claim 3
Dependent Claim
112 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises barium and/or strontium and/or compounds thereof, said ingredients being comprised of the following elements or compounds in percent weight of the total electrode weight:
Claim 4
Dependent Claim
112 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises barium and/or strontium and/or compounds thereof, said ingredients being comprised of the following elements or compounds in percent weight of the total electrode weight:
Claim 5
Dependent Claim
32 words
An arc welding electrode comprised of a tube of mild steel having on the inside thereof ingredients comprised of the following elements or compounds in percent weight of the total electrode weight:
Claim 6
Dependent Claim
32 words
An arc welding electrode comprised of a tube of mild steel having on the inside thereof ingredients comprised of the following elements or compounds in percent weight of the total electrode weight:
Claim 7
Dependent Claim
94 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients barium fluoride.
Claim 8
Dependent Claim
94 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients barium fluoride.
Claim 9
Dependent Claim
95 words
An arc welDing electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients barium titanate.
Claim 10
Dependent Claim
95 words
An arc welDing electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients barium titanate.
Claim 11
Dependent Claim
94 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like, one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients barium carbonate.
Claim 12
Dependent Claim
94 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like, one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients barium carbonate.
Claim 13
Dependent Claim
95 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients barium tetra aluminide.
Claim 14
Dependent Claim
95 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients barium tetra aluminide.
Claim 15
Dependent Claim
94 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients strontium fluoride.
Claim 16
Dependent Claim
94 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises incorporating in said ingredients strontium fluoride.
Claim 17
Dependent Claim
110 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises barium and/or strontium and/or compounds thereof, said electrode having an arc pool breakaway time under standard conditions between 0.11 and 0.40 minutes.
Claim 18
Dependent Claim
110 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof as major ingredients one or more highly reactive deoxidizer(s) taken from the class consisting of magnesium, aluminum, zirconium, titanium, calcium, lithium and the like; one or more materials selected from the class consisting of aluminum fluoride, the halides of alkali metals and the alkaline earth metals other than barium and strontium and/or materials capable of breaking down or combining in the heat of the arc to form such halides; the improvement which comprises barium and/or strontium and/or compounds thereof, said electrode having an arc pool breakaway time under standard conditions between 0.11 and 0.40 minutes.
Claim 19
Dependent Claim
11 words
Electrode of claim 3 wherein said ingredients are approximately as follows:
Claim 20
Dependent Claim
11 words
Electrode of claim 3 wherein said ingredients are approximately as follows:
Claim 21
Dependent Claim
19 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof ingredients approximately as follows:
Claim 22
Dependent Claim
19 words
An arc-welding electrode comprised of a tube of mild steel having on the inside thereof ingredients approximately as follows:
Claim 23
Dependent Claim
11 words
The electrode of claim 3, wherein said ingredients include alloying constituents.
Claim 24
Independent Claim
138 words
A method of out-of-position arc-welding a steel workpiece which comprises: feeding a self-shielded consumable electrode comprised of a metal steel tube containing slag-forming ingredients including at least one member from the group consisting of barium, strontium and compounds thereof in small effective amounts to stabilize arcs at low currents and to provide viscous slags during welding; and passing current between said workPiece and said electrode to establish an arc, which melts a portion of said workpiece to form an arc pool and which melts and transfers metal and slag-forming ingredients from said electrode to said arc pool to produce a viscous slag over the arc pool to provide a breakaway time in excess of 0.11 minute as determined for an electrode five sixty-fourth inch in diameter and melted against a plate in the 90* position under standard conditions.
Claim 25
Independent Claim
138 words
A method of out-of-position arc-welding a steel workpiece which comprises: feeding a self-shielded consumable electrode comprised of a metal steel tube containing slag-forming ingredients including at least one member from the group consisting of barium, strontium and compounds thereof in small effective amounts to stabilize arcs at low currents and to provide viscous slags during welding; and passing current between said workPiece and said electrode to establish an arc, which melts a portion of said workpiece to form an arc pool and which melts and transfers metal and slag-forming ingredients from said electrode to said arc pool to produce a viscous slag over the arc pool to provide a breakaway time in excess of 0.11 minute as determined for an electrode five sixty-fourth inch in diameter and melted against a plate in the 90* position under standard conditions.
Claim 26
Dependent Claim
26 words
The method described in claim 14, wherein said current is in the range between about 50 amperes and 100 amperes to minimize burnthrough of said workpiece.
Claim 27
Dependent Claim
24 words
The method of claim 14, wherein said ingredients are comprised of the following elements or compounds in percent weight of the total electrode weight:
Claim 28
Dependent Claim
24 words
The method of claim 14, wherein said ingredients are comprised of the following elements or compounds in percent weight of the total electrode weight:
Claim 29
Dependent Claim
12 words
The method of claim 14, wherein said ingredients are approximately as follows:
Claim 30
Dependent Claim
12 words
The method of claim 14, wherein said ingredients are approximately as follows:
Claim 31
Dependent Claim
12 words
The method of claim 14, wherein said ingredients are approximately as follows:
References Cited (Backward Citations)
US2731373A
Cited
US3177340A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |