Welding head and welding head assembly for an arc-welding system
AssigneeEsab AB
InventorKennet Fahlstrom
Life of this patent
Estimating the term…
Abstract
The invention relates to an electric arc-welding welding head comprising a contact device and one or more wire feeder units, the contact device encompassing an electrode assembly, the electrode assembly comprising at least two fusible continuously-fed wire electrodes arranged in a contact device. An electrically insulated duct is provided for electric insulation of at least one of the electrodes so that the electrode is electrically insulated from other electrodes in the electrode assembly. The invention also relates to an electric arc-welding contact device and an electric arc-welding welding head assembly.
Claims20
An electric arc-welding welding head comprising:
- at least one fusible, continuously-fed hot wire electrode configured to be consumed in an arc during a welding operation;
- a fusible, continuously-fed cold wire electrode that is configured to be consumed without an arc by being in continuous short-circuit contact with a weld pool during the welding operation;
- and
- a contact device including a conductive body through which electrical power is delivered to the at least one hot wire electrode, the contact device being entirely included in or on the electric arc-welding head and including an electrically insulated duct that extends through the conductive body and at least one additional duct that is defined by the conductive body, wherein the at least one hot wire electrode extends through the at least one additional duct while the at least one additional duct delivers electrical power to the at least one hot wire electrode, and the cold wire electrode extends through the electrically insulated duct so that the cold wire electrode is electrically insulated from the at least one hot wire electrode.
A welding head comprising:
- a fusible, continuously-fed cold wire electrode that is configured to be consumed without an arc by being in continuous short-circuit contact with a weld pool during a welding operation;
- at least one fusible, continuously-fed hot wire electrode configured to be consumed in an arc during the welding operation;
- a contact device including a conductive body through which electrical power is delivered to the at least one hot wire electrode, the contact device being entirely included in or on the welding head and including an electrically insulated duct that extends through the conductive body and at least one additional duct that is defined by the conductive body, wherein the at least one hot wire electrode extends through the at least one additional duct while the at least one additional duct delivers electrical power to the at least one hot wire electrode, and the cold wire electrode extends through the electrically insulated duct so that the cold wire electrode is electrically insulated from the at least one hot wire electrode;
- a first motor driven wire feeder unit for feeding the at least one hot wire electrode towards the contact device;
- and
- a second motor driven wire feeder unit for feeding the cold wire electrode towards the contact device.
Dependencies are inferred from the claim text.