Arc Start Control for Shorter Welding Cycle Time
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Solution Overview
Problem
The existing arc welding processes face inefficiencies due to unnecessary downtime when the welding torch reaches the start position before the arc forms, leading to decreased productivity, and manual adjustments are required to maintain welding quality.
Innovation Solution
An arc start adjustment device that automatically shortens the cycle time by obtaining welding data and adjusting the arc start procedure using neural networks to determine the optimal timing for wire feeding slowdown and current supply, ensuring the welding result is not compromised.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If arc start processing is executed in advance by slowing down wire feeding, then productivity is improved through shortened cycle time, but welding quality may be deteriorated
Solution Approach 1:
The system dynamically adjusts wire feeding speed based on real-time arc formation status. The control device monitors whether an arc is formed and automatically modifies the wire feeding speed profile, transitioning from a fixed predetermined speed to a dynamic adaptive speed that optimizes both productivity and welding quality for each welding cycle.
Solution Approach 2:
The system implements feedback control by detecting whether arc formation has occurred and using this information to adjust wire feeding speed. The control device receives feedback on arc status and automatically modifies the wire feeding parameters, creating a closed-loop control system that ensures welding quality while maximizing productivity.
2Productivity
If wire slow down speed is set to high to shorten arc start processing time, then productivity is improved, but welding quality is compromised
Solution Approach 1:
The wire slow down speed is changed from a fixed high value to a dynamic value that adjusts based on arc formation detection. The control device automatically modulates the slow down speed during the arc start processing phase, enabling faster arc initiation when conditions are favorable while maintaining quality control when needed.
Solution Approach 2:
The system changes the wire feeding speed parameter dynamically during the arc start phase based on detected arc formation conditions. By adjusting the speed parameter in response to real-time feedback, the system optimizes the balance between rapid arc initiation and welding quality without relying on a fixed high slow down speed.
3Manufacturing precision
If manual arc start processing is performed repeatedly to ensure welding quality, then welding quality is maintained, but productivity decreases
Solution Approach 1:
The system enables self-service control where the control device automatically monitors arc formation and adjusts wire feeding speed without requiring manual operator intervention. This automated self-adjusting mechanism maintains welding quality consistently while eliminating the time loss associated with manual trial-and-error adjustments, thereby improving productivity.
Solution Approach 2:
The automated feedback control system replaces manual arc start processing by continuously monitoring welding conditions and automatically adjusting parameters. The control device uses feedback from arc detection to make real-time adjustments, eliminating the need for repeated manual interventions while maintaining high welding quality and improving overall productivity.
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 effectively minimizes the cycle time of the welding process while maintaining or improving welding quality, allowing for more efficient and automated arc start procedures.
Implementation Method 1
an electric arc is caused between a welding wire fed to a region to be welded of a base metal and the base metal, and the base metal is welded by the heat of the electric arc
Data Source
AI summary
An arc start adjustment device adjusting an arc start procedure in a welding process comprises an obtainment unit that obtains welding data indicating a welding state during or after a welding process, and a procedure adjustment unit that adjusts the arc start procedure such that the cycle time of the welding process is shortened based on welding data obtained by the obtainment unit.