Multi-Source Welding Power Summation for Total Heat Input Accuracy
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Solution Overview
Problem
Conventional welding systems fail to accurately calculate the total energy input during the welding process, as they do not account for the energy contributed by wire preheating, which is found to contribute to the heat absorbed by the workpiece, and thus underestimate the total heat input.
Innovation Solution
The method involves calculating the instantaneous power from multiple energy sources, including laser, arc, resistive, and induction preheating, and displaying this information via a user interface, allowing for a comprehensive understanding of heat input by summing the average instantaneous power from all energy sources, which can be used to determine the total heat input in Joules per unit weld length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional welding systems calculate energy input only from arc power, then the calculation system remains simple, but the total heat input measurement is inaccurate and underestimated
Solution Approach 1:
The patent combines multiple energy source measurements (arc power, preheating power, laser power) into a unified total heat input calculation system. The controller integrates data from separate power sources and sums their contributions to provide comprehensive energy input measurement, resolving the contradiction by merging individual measurement systems into a coordinated whole that achieves accurate total heat input measurement without requiring completely separate complex systems for each energy source.
Solution Approach 2:
The controller is designed to handle multiple functions: measuring arc power, preheating power, and laser power, then calculating total heat input and displaying results. This multi-functional approach allows a single device to perform comprehensive energy measurement across different welding processes and energy sources, improving measurement precision while avoiding the need for multiple separate specialized devices that would increase overall system complexity.
2Productivity
If wire preheating energy is excluded from total heat input calculation, then the calculation process remains simple, but the welding process optimization capability is reduced
Solution Approach 1:
The system provides feedback by displaying total heat input information to operators, enabling them to optimize welding parameters based on comprehensive energy data. The controller continuously monitors and calculates total heat input from all sources including preheating, then presents this information for process optimization, creating a closed-loop system where measurement information directly informs welding parameter adjustment and improvement.
Solution Approach 2:
The system performs preliminary calculation and aggregation of energy input data from all sources before the welding operation completes. By pre-calculating total heat input including preheating contributions, the system provides complete energy information available for immediate process optimization decisions, rather than requiring post-process analysis that would delay optimization actions.
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 approach enables accurate determination of total heat input, eliminating the need for additional data acquisition equipment and providing a precise understanding of the welding process, allowing operators to optimize energy usage and improve weld quality.
Implementation Method 1
Electrical power is applied to the welding wire and a circuit is completed through the workpiece to sustain a welding arc that melts the electrode wire and the workpiece to form the desired weld
Implementation Method 2
sustain a welding arc that melts the electrode wire and the workpiece to form the desired weld
Implementation Method 3
calculate instantaneous power of a process that contains multiple sources of input energy... resistive preheating of the wire
Data Source
AI summary
An example welding-type system, includes: a processor; and memory comprising machine readable instructions which, when executed, cause the processor to: collect a plurality of average instantaneous power measurements from a plurality of welding-type power sources associated with a single welding-type process; and determine a total power input to the welding-type process by summing the average instantaneous power measurements for each of the welding-type power sources.