Multi-Electrode Welding Circuit Monitoring for Spatter Bridge Detection
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Solution Overview
Problem
Multiple welding processes using multiple electrodes face issues with spatter bridges forming between electrodes, leading to undesired electrical connections and unstable welding processes due to mutual interference between separate welding current circuits.
Innovation Solution
A method and device that apply a test parameter to one welding current circuit and record an electrical parameter in another to detect an electrically conductive connection between circuits, using welding parameters like voltage or current to identify spatter bridges, and generate signals or interrupt the process if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple welding processes are carried out simultaneously using multiple electrodes, then the melting rate is increased and various additives can be fed to the welding point, but spatter bridges can form between adjacent electrodes leading to undesired electrical connections and unstable welding processes
Solution Approach 1:
The patent applies preliminary action by performing a test before the actual welding process to detect potential spatter bridges. The control unit applies a test voltage or test current to the first welding current circuit before welding starts, and checks if this test signal appears in the second welding current circuit. This preliminary detection prevents unstable welding processes by identifying electrical connections between circuits before they cause problems during actual welding.
Solution Approach 2:
The patent implements feedback by continuously monitoring electrical parameters during welding and using this information to detect spatter bridges. The control unit records electrical welding parameters (voltage, current, resistance) from both welding current circuits and compares them to detect unintended electrical connections. This feedback mechanism allows the system to identify and respond to spatter bridge formation, maintaining welding process stability.
2Productivity
If multiple welding processes are carried out simultaneously using multiple electrodes, then the melting rate is increased, but mutual interference between separate welding current circuits occurs due to spatter bridges
Solution Approach 1:
The patent applies preliminary action by performing a test before the actual welding process to detect potential spatter bridges. The control unit applies a test voltage or test current to the first welding current circuit before welding starts, and checks if this test signal appears in the second welding current circuit. This preliminary detection prevents unstable welding processes by identifying electrical connections between circuits before they cause problems during actual welding.
Solution Approach 2:
The patent implements feedback by continuously monitoring electrical parameters during welding and using this information to detect spatter bridges. The control unit records electrical welding parameters (voltage, current, resistance) from both welding current circuits and compares them to detect unintended electrical connections. This feedback mechanism allows the system to identify and respond to spatter bridge formation, maintaining welding process stability.
3Reliability
If spatter bridges form between electrodes, then electrical connections occur between separate welding current circuits, but detection and intervention require additional time
Solution Approach 1:
The patent applies preliminary action by performing a test before the actual welding process to detect potential spatter bridges. The control unit applies a test voltage or test current to the first welding current circuit before welding starts, and checks if this test signal appears in the second welding current circuit. This preliminary detection prevents unstable welding processes by identifying electrical connections between circuits before they cause problems during actual welding.
Solution Approach 2:
The patent implements continuous monitoring during the welding process, recording electrical parameters continuously rather than performing discrete checks. This allows for real-time detection of spatter bridges without interrupting the welding process, maintaining continuity of useful action while ensuring reliable detection.
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
Effectively detects and prevents spatter bridges, ensuring consistent and stable welding quality by allowing for timely intervention to clean or adjust the welding device, maintaining process stability.
Implementation Method 1
an arc is ignited between the electrode and the base material by means of an electric voltage or an electric current resulting therefrom, which arc fuses the electrode and the region of the base material surrounding the arc
Implementation Method 2
The shielding gas is used to shield the arc and the region of the melt from the atmosphere, substantially to avoid oxidation
Implementation Method 3
The welding tool can also record an electrical measurement variable while the welding process is being carried out, for example the welding voltage, the welding current or an electrical resistance of the welding current circuit
Data Source
AI summary
A multiple welding method and a welding device with at least two electrodes which ensure a welding quality that is as consistent as possible and stable welding processes. A test parameter is applied to one of the at least two welding current circuits before the start or after the end of the multiple welding method and at least one electrical welding parameter is recorded in at least one other welding current circuit, with an electrically conductive connection between the at least two welding current circuits being detected if the recorded welding parameter is influenced by the test parameter and fulfills a predetermined test criterion. Alternatively, at least one electrical welding parameter is recorded in each welding current circuit during the multiple welding method, with an electrically conductive connection between the at least two welding current circuits being detected if the recorded welding parameters change simultaneously.