US3710066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of electric-arc welding of tubular products with magnetic control of the arc
Assignee: Individual
•
Filing: 1971-06-28
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Granted: 1973-01-09
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Expires: 1991-06-28
Abstract
Abstract A method for the electric-arc welding of tubular products, in which a magnetic field is made to act upon the arc so as to control the process of welding, the method characterized in that the magnetic field is established in the welding zone by passing an electric current along the workpiece from a separate current source.
Inventors
- 👤 J Raichuk
- 👤 Z Knyazhinsky
- 👤 V Volkov
- 👤 S Mandelberg
- 👤 V Lebedev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:16
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/06; B23K9/073; B23K9/0737; B23K9/02; B23K9/032; B23K9/0325
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
165 words
A method for the production of a tubular product by electricarc welding of a workpiece, comprising the following operations: placing of the workpiece in a welding machine in a welding zone thereof; advancing an electrode to the welding zone; connecting said workpiece through a current inlet contact member and a current outlet contact member away from said electrode to a first source of current and passing a current through the workpiece in the direcTion of the weld seam to be formed to establish a magnetic field in said workpiece; connecting the workpiece and said electrode to a second current source which is the welding source; initiating an arc between the electrode and workpiece causing molten metal at the region of said arc; and subsequently displacing the electrode and workpiece relative to each other, whereby said current from said first source flows through said molten metal, and the current carrying molten metal under the influence of said magnetic field results in production of a sound weld.
Claim 2
Independent Claim
165 words
A method for the production of a tubular product by electricarc welding of a workpiece, comprising the following operations: placing of the workpiece in a welding machine in a welding zone thereof; advancing an electrode to the welding zone; connecting said workpiece through a current inlet contact member and a current outlet contact member away from said electrode to a first source of current and passing a current through the workpiece in the direcTion of the weld seam to be formed to establish a magnetic field in said workpiece; connecting the workpiece and said electrode to a second current source which is the welding source; initiating an arc between the electrode and workpiece causing molten metal at the region of said arc; and subsequently displacing the electrode and workpiece relative to each other, whereby said current from said first source flows through said molten metal, and the current carrying molten metal under the influence of said magnetic field results in production of a sound weld.
Claim 3
Dependent Claim
47 words
A method of claim 1, which includes the step of providing electrical insulation of the tubular workpiece from the welding machine on at least one side from a plane which is normal to the longitudinal axis of the workpiece and in which the welding arc is maintained.
Claim 4
Independent Claim
116 words
A method for the production of a tubular product by electric arc welding of a workpiece, comprising the following operations: placing the workpiece in a welding machine in a welding zone thereof; providing electrical insulation of said workpiece from the welding machine body; advancing a welding electrode to the welding zone; connecting said workpiece to a first source of current and passing a current through the workpiece to establish a magnetic field in said workpiece; connecting the workpiece and said welding electrode to a welding current zone; passing current to the welding electrode and initiating an arc between the welding electrode and said workpiece; and displacing said welding electrode and said workpiece relative to each other.
Claim 5
Independent Claim
116 words
A method for the production of a tubular product by electric arc welding of a workpiece, comprising the following operations: placing the workpiece in a welding machine in a welding zone thereof; providing electrical insulation of said workpiece from the welding machine body; advancing a welding electrode to the welding zone; connecting said workpiece to a first source of current and passing a current through the workpiece to establish a magnetic field in said workpiece; connecting the workpiece and said welding electrode to a welding current zone; passing current to the welding electrode and initiating an arc between the welding electrode and said workpiece; and displacing said welding electrode and said workpiece relative to each other.
References Cited (Backward Citations)
US1827657A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |