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US 7,405,377 B2Granted
Method for testing undercut on the inner diameter of pipe welds
AssigneeLincoln Global, Inc.
InventorsMatthew Jay James, Patrick J. Coyne
Life of this patent
Estimating the term…
Abstract
A method and apparatus of comparing two or more welding flux systems to determine which flux system results in the smallest incidence of undercut about a weld bead in an inner diameter of a pipe.
Claims22
A method for comparing a plurality of welding flux systems to determine which flux system results in the smallest incidence of undercut about a weld bead in an inner of a pipe comprising:
- a) selecting a first flux system;
- b) selecting a first welding procedure for forming a weld bead on the pipe;
- c) forming a first weld bead on the pipe by use of said first flux system in combination with said first welding procedure;
- d) electronically scanning at least a portion of said first weld bead to obtain a first set of data about said first weld bead, data about a region about said first weld bead, or combinations thereof;
- e) selecting a second flux system;
- f) forming a second weld bead on the pipe by use of said second flux system in combination with said first welding procedure;
- g) electronically scanning at least a portion of said second weld bead to obtain a second set of data about said second weld bead, data about a region about said second weld bead, or combinations thereof;
- and,
- h) comparing said first and second sets of data to determine which flux system results in the smallest incidence of undercut about weld beads in the pipe.
6 more elements
A method for testing the quality of a weld bead on a workpiece comprising the steps of:
- a) selecting a first flux system and first electrode for use in forming a first weld bead;
- b) selecting a first welding procedure to form the weld bead;
- c) forming said first weld bead on the workpiece using the first welding procedure in association with the first flux system and first electrode;
- d) scanning at least a portion of said first weld bead to obtain a first set of data about said first weld bead, data about a region about said first weld bead, or combinations thereof;
- e) analyzing said first set of data to determine the occurrence of undercut in the workpiece;
- f) selecting a second flux system;
- g) forming a second weld bead on the workpiece using the first welding procedure in association with the second flux system and first electrode;
- h) scanning at least a portion of said second weld bead to obtain a second set of data about said second weld bead, data about a region about said second weld bead, or combinations thereof;
- and,
- i) analyzing said second set of data to determine the occurrence of undercut in the workpiece.
7 more elements
A method for testing the quality of a weld bead on a workpiece comprising the steps of:
- a) selecting a first flux system and first electrode for use in forming a first weld bead;
- b) selecting a first welding procedure to form the weld bead;
- c) forming said first weld bead on the workpiece using the first welding procedure in association with the first flux system and first electrode;
- d) scanning at least a portion of said first weld bead to obtain a first set of data about said first weld bead, data about a region about said first weld bead, or combinations thereof;
- e) analyzing said first set of data to determine the occurrence of undercut in the workpiece;
- and,
- f) creating a physical mark on the location or near the location of said undercut in the workpiece resulting from said formation of said first weld bead.
4 more elements
Dependencies are inferred from the claim text.