Back to results
US 2006/0231539 A1Published application
Method for rating and/or ranking welding electrodes
AssigneeLicoin Global, Inc.
InventorsRajeev Katiyar, Garr Eberle
Life of this patent
Estimating the term…
Abstract
Methods are disclosed for rating a welding electrode and/or for ranking two or more electrodes with respect to gas tracking effects in gas shielded flux cored arc welding processes. The methods involve performing a standardized welding process using an electrode of interest to create a test weld on a workpiece with a linearly varying contact to work distance in the process, measuring a distance from the beginning of the weld to a point at which gas tracking is first observed, and rating an electrode or ranking several electrodes according to the measured distance.
Claims42
A method for rating a welding electrode for use in arc welding operations, said method comprising:
- providing a workpiece with first and second ends and a substantially flat workpiece surface extending therebetween;
- performing a standardized welding process using said welding electrode to create a test weld on said workpiece surface, said test weld extending from a weld beginning proximate said first workpiece end to a weld end proximate said second workpiece end, said standardized welding process providing a first contact to work distance value at said weld beginning and a second contact to work distance value at said weld end, wherein said contact to work distance varies substantially linearly from said weld beginning to said weld end with said first contact to work distance value being larger than said second contact to work distance value;
- measuring a distance from said weld beginning to a point in said test weld at which gas tracking is first observed;
- and
- rating said welding electrode according to said distance.
2 more elements
A method of ranking welding electrodes, said method comprising:
- providing a workpiece with first and second ends and a substantially flat workpiece surface extending therebetween;
- performing a standardized welding process using first and second welding electrodes to create first and second test welds, respectively, on said workpiece surface, said test welds individually extending from a corresponding weld beginning proximate said first workpiece end to a corresponding weld end proximate said second workpiece end, said standardized welding process providing a first contact to work distance value at said weld beginning and a second contact to work distance value at said weld end of each said test weld, wherein said contact to work distance varies substantially linearly from said weld beginning to said weld end with said first contact to work distance value being larger than said second contact to work distance value, and said contact to work distance being substantially equal for said first and second test welds;
- measuring a first distance for said first test weld from said weld beginning to a gas tracking point at which gas tracking is first observed;
- measuring a second distance for said second test weld from said weld beginning to a gas tracking point at which gas tracking is first observed;
- and
- ranking said first and second welding electrodes according to said first and second distances.
3 more elements
A method of ranking first and second welding electrodes, said method comprising:
- providing a first workpiece with first and second ends and a substantially flat workpiece surface extending therebetween;
- performing a standardized welding process using said first welding electrode to create a first test weld on said workpiece surface of said first workpiece, said first test weld extending from a weld beginning proximate said first workpiece end to a weld end proximate said second workpiece end, said standardized welding process providing a first contact to work distance value at said weld beginning and a second contact to work distance value at said weld end, wherein said contact to work distance varies substantially linearly from said weld beginning to said weld end with said first contact to work distance value being larger than said second contact to work distance value;
- measuring a first distance from said weld beginning to a gas tracking point in said first test weld at which gas tracking is first observed;
- providing a second workpiece with first and second ends and a substantially flat workpiece surface extending therebetween;
- performing said standardized welding process using said second welding electrode to create a second test weld on said workpiece surface of said second workpiece, said second test weld extending from a weld beginning proximate said first workpiece end to a weld end proximate said second workpiece end, said contact to work distance being substantially equal for said first and second test welds;
- measuring a second distance from said weld beginning to a gas tracking point in said second test weld at which gas tracking is first observed;
- and
- ranking said first and second welding electrodes according to said first and second distances.
5 more elements
Dependencies are inferred from the claim text.