Cored Wire Manufacturing Control for Core Ratio Precision
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Solution Overview
Problem
Existing methods for manufacturing cored wire lack control over the production process, resulting in significant variations in core ratio, often exceeding ±2%, which can lead to rework in welds made with flux cored wire.
Innovation Solution
An automated system that measures and controls strip dimensions and fill material volume in real-time, adjusting for variations in strip feed, width, thickness, and fill material density to achieve a core ratio variation of ±0.5% or less, using sensors and a fill system controller to ensure precise filling and welding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional forming dies and manual filling methods are used, then the manufacturing process is simple and easy to operate, but the core ratio variation exceeds ±2% resulting in poor manufacturing precision
Solution Approach 1:
The system continuously measures strip dimensions (width, thickness) and fill material properties (flow rate, density) during production, feeds this data back to the controller, and automatically adjusts filling parameters to maintain core ratio within ±0.5% variation
Solution Approach 2:
Manual filling operations are replaced with an automated filling system controlled by microprocessor-based controllers that use sensor data to precisely control fill material deposition, replacing manual mechanical processes with automated electronic control
2Manufacturing precision
If automated monitoring and control systems are implemented, then manufacturing precision improves to ±0.5% core ratio variation, but device complexity increases
Solution Approach 1:
The control system integrates multiple functions into a single platform: strip dimension measurement, fill material property monitoring, process parameter control, and quality verification, allowing one system to perform multiple functions that would otherwise require separate devices
Solution Approach 2:
The system automatically monitors its own process parameters and self-adjusts filling operations without external intervention, with the controller continuously optimizing the process based on real-time sensor feedback from strip measurements and fill material characteristics
3Reliability
If traditional filling methods are used without process control, then the ease of operation is high, but the reliability of weld quality deteriorates due to out-of-tolerance core ratio
Solution Approach 1:
Real-time measurement of strip dimensions and fill material properties provides continuous feedback to the control system, which automatically adjusts filling parameters to ensure core ratio remains within specification, guaranteeing consistent weld quality
Solution Approach 2:
The system measures and characterizes strip and fill material properties before filling occurs, allowing the controller to pre-calculate and adjust filling parameters to compensate for anticipated variations, ensuring quality before the actual filling takes place
Data Source
AI summary
A method for making continuously a cored wire includes feeding a flat metal strip at a first speed during a run, and measuring automatically dimensions of the strip continuously during the run. The strip is formed into a channel open upwardly and sized to hold a quantity of at least one fill material, which is transported continuously during the run and delivered through a metering device at a delivery speed. The delivery speed is automatically adjusted during the run to ensure that the quantity of the at least one fill material deposited into the channel is in a desired core ratio range about the desired core ratio. The delivery speed adjustment is based on the first speed, the measured dimensions of the strip, and the volume of the at least one fill material determined to be in transport by the metering device.