Bent Pole Shoe Arc Steering for Low-Energy TIG Deflection
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Solution Overview
Problem
Existing directing apparatuses for arc welding devices using magnetically moved arcs suffer from inefficient energy use and limited arc deflection due to the need for high operating currents to achieve small deflections.
Innovation Solution
A directing apparatus with bent pole shoes and solenoid coils, featuring a coil former and individual coil actuation, enhances magnetic field focusing and deflection, allowing for stronger arc orientation with reduced energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If high operating current is used to achieve arc deflection, then arc deflection capability is improved, but energy consumption increases
Solution Approach 1:
The pole shoes are bent at an angle between 10° and 130° relative to the solenoid coil axis, creating a non-uniform magnetic field distribution that concentrates magnetic flux density at specific locations. This local concentration of magnetic field strength enhances arc deflection capability without requiring proportionally higher operating currents, thereby resolving the contradiction between force and energy consumption.
Solution Approach 2:
The invention changes the geometric parameter of the pole shoes from straight to bent, with the bend angle being a critical parameter between 10° and 130°. This parameter change optimizes the magnetic field distribution, allowing for more efficient energy utilization while maintaining or enhancing arc deflection capability.
2Strength
If straight pole shoes are used, then device simplicity is maintained, but magnetic field strength is insufficient
Solution Approach 1:
The pole shoes are designed with a curved or bent geometry instead of straight configurations. This curvature allows the pole shoes to better conform to the magnetic field lines generated by the solenoid coils, improving magnetic flux concentration and field strength. The curved design is achieved through bending the pole shoe material, which maintains structural integrity while enhancing magnetic performance.
3Force
If magnetic field is dispersed, then coverage area is increased, but deflection effectiveness decreases
Solution Approach 1:
The bent pole shoes create a non-uniform magnetic field with higher flux density in specific regions where deflection is most needed. The geometry concentrates magnetic lines of force at critical locations along the arc path, ensuring that the magnetic field is not uniformly distributed but rather optimized for maximum deflection effectiveness at key points.
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
The apparatus achieves a 30-60% increase in magnetic field strength, enabling more extensive arc deflection and complex welding paths while reducing energy consumption and potentially eliminating the need for water cooling.
Implementation Method 1
one or more solenoid coils for forming a magnetic field for deflecting an arc generated by an arc welding device
Implementation Method 2
at least two bent pole shoes comprising at least two legs for focusing the magnetic field
Implementation Method 3
Since an arc has its own magnetic field, it responds to a magnetic field. It is therefore possible to deflect and orientate the arc by an external magnetic field
Data Source
AI summary
A directing apparatus for orienting an arc of an arc welding device for arc welding, in particular for TIG welding, using a magnetically moved arc, comprising: a retaining device having an opening for receiving a welding head of the arc welding device; one or more solenoid coils for forming a magnetic field for deflecting an arc generated by a welding device in the opening; and at least two bent pole shoes comprising at least two legs for focusing the magnetic field, a first of the legs of each pole shoe being affixed to the retaining device and/or to the solenoid coil and a second of the legs being oriented at an angle of less than 130° to the first leg.