PLC Automated Welding System for Hardfacing Complex Geometries
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing welding systems for hardfacing require significant operator expertise and manual input to achieve precise welding on complex surfaces, leading to variable weld quality and increased costs due to the need for detailed calculations and adjustments during the process.
Innovation Solution
An automated welding system using a programmable logic controller (PLC) that calculates welding parameters based on minimal operator input, maintaining a constant pitch to ensure consistent weld thickness, and adjusts parameters automatically during the process, allowing for complex paths and reduced operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual hardfacing welding is performed by an experienced operator, then welding quality can be maintained through skill and judgment, but operator expertise is required and weld consistency varies due to manual application on uneven surfaces
Solution Approach 1:
The system performs self-measurement of workpiece geometry using sensors and automatically calculates welding parameters without operator intervention. The PLC controller autonomously adjusts welding parameters based on measured dimensions, eliminating the need for manual calculations and expertise while maintaining consistent weld quality.
Solution Approach 2:
The patent replaces manual operator actions with an automated system comprising sensors, PLC controller, and welding machine. The system automatically measures workpiece geometry, calculates parameters, and controls welding execution, substituting human skill and judgment with automated computational and control systems.
2Ease of operation
If machine welding is used for hardfacing, then operator skill requirements are reduced, but complex calculations and adjustments are still required during the process
Solution Approach 1:
The system automatically measures workpiece geometry using integrated sensors and autonomously calculates all welding parameters including torch position, movement speed, and heat input. This self-service capability eliminates the need for operators to perform complex manual calculations while maintaining precise control over the welding process.
Solution Approach 2:
The system performs preliminary measurement of workpiece dimensions before welding begins and pre-calculates all necessary parameters. This advance preparation eliminates the need for complex adjustments during the welding process itself, simplifying operator tasks while maintaining precision.
3Productivity
If automated welding systems are implemented, then operator error is reduced and efficiency increases, but the system complexity and initial setup requirements increase
Solution Approach 1:
The system integrates multiple functions into a single automated platform: geometric measurement, parameter calculation, process control, and welding execution. This multi-functionality consolidates what would otherwise require separate devices and operations, increasing efficiency while managing system complexity through integration.
Solution Approach 2:
The system incorporates sensors that continuously measure workpiece geometry and provide feedback to the PLC controller. This real-time feedback enables automatic adjustment of welding parameters during execution, improving consistency and reducing errors while the automated nature of the feedback loop manages operational complexity.
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 system enables precise and consistent welding on complex geometries with reduced operator error and increased efficiency, allowing for quick adaptation to varying workpiece geometries and standardization of welding parameters, thereby improving weld quality and reducing operational complexity.
Implementation Method 1
One such process is 'hardfacing,' wherein material is deposited onto a metallic surface or substrate of an object to change the properties of the object. Hardfacing may be done either to increase an object's wear resistance or to restore the surface of an object that has been worn down. One example of a welding process used for hardfacing is plasma transferred arc ('PTA') welding.
Data Source
Figure 1
Figure 1A
Figure 2~3
AI summary
The present application discloses a system and method for welding. More particularly, the present application relates to a method and system for carrying out an automated or semi-automated welding operation with minimal input from an operator.