Segmented Arc Welding Head for Rotation-Free Seam Joining
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Solution Overview
Problem
Gas tungsten arc welding requires significant time and skill due to the need for precise rotation and alignment of welding apparatus and objects, which complicates the welding process.
Innovation Solution
An apparatus comprising movable metal segments with a power supply and gas jacket that can surround a seam between objects to be welded, allowing for the creation of an electrical arc with reduced manual dexterity, using a torch body with adjustable metal segments and a locking mechanism, and a method involving the movement of these segments to apply shielding gas and electric current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a singular localized electrode is used for arc welding, then welding precision is maintained, but significant rotation and manual skill are required, increasing operation time and complexity
Solution Approach 1:
The welding electrode is divided into multiple segmented electrodes arranged in a circular pattern around the workpiece. Each segment can be independently controlled and positioned, eliminating the need for manual rotation and alignment while maintaining precise welding control through automated segment activation.
Solution Approach 2:
The welding approach transitions from a single-point localized electrode to a multi-dimensional circular array of electrodes. This spatial reconfiguration allows simultaneous multi-point welding around the workpiece, eliminating rotation requirements and reducing operation time while maintaining precision through controlled arc placement.
2Productivity
If significant rotation of welding apparatus and objects is performed, then complete welding coverage is achieved, but time and skill requirements increase
Solution Approach 1:
The circular array of segmented electrodes enables continuous welding action around the workpiece without interruption for rotation or repositioning. Multiple segments can operate simultaneously or sequentially in a continuous manner, eliminating idle time associated with manual rotation and apparatus repositioning.
Solution Approach 2:
The electrode system transitions from a static single-point configuration requiring dynamic rotation to a dynamic circular array where segments can be independently activated and deactivated. This dynamic control allows the welding process to adapt to different positions around the workpiece without physical rotation, significantly reducing welding time.
3Reliability
If precise rotation and alignment are required, then welding quality is maintained, but operator skill level must be high, reducing ease of operation
Solution Approach 1:
The segmented electrode system with circular arrangement provides self-alignment and self-positioning capabilities. The geometry of the circular array and the positioning of segments relative to the workpiece automatically ensure proper alignment, eliminating the need for operator skill in manual rotation and alignment tasks while maintaining consistent welding quality.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution significantly reduces the time and skill required for arc welding, enabling seams to be welded in less than 10 seconds without the need for extensive rotation, thereby simplifying the process.
Implementation Method 1
applying an electric current to the metal segments, thereby creating an electrical arc between the metal segments and the two elongated objects to be welded
Implementation Method 2
an electric arc forms between a non-consumable metal electrode and the workpiece metal(s), which heats the workpiece metal(s), causing them to melt and join
Implementation Method 3
a gas jacket attached to each of the metal segments... passing shielding gas through the gas jacket... shields the process from contaminants in the atmosphere
Data Source
AI summary
Disclosed is an apparatus for arc welding, comprising: a torch body comprising a power supply line and a gas supply line; two or more metal segments movable relative to one another being sized and shaped to surround a seam between two elongated objects to be welded together, the two or more metal segments being in electrical communication with the power supply line; and a gas jacket attached to each of the metal segments.