Inclined Blade Strip Joining for Thick Steel Weld Quality
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Solution Overview
Problem
Conventional strip joining apparatuses are inadequate for welding thick steel strips, as they struggle to maintain the quality of the weld and often require manual intervention, leading to interruptions in the pipe mill process due to the time-consuming nature of cutting and welding thick strips.
Innovation Solution
A strip joining apparatus that uses inclined cutting blades to create a 'V'-shaped cut on both strips, allowing for direct welding without the need for additional trimming, ensuring rapid and high-quality welding of thick steel strips.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a vertical cutting blade is used to cut steel strips, then the cutting operation is simple and quick, but the weld quality of thick steel strips deteriorates because the vertical cut surfaces cannot be properly welded for strips thicker than 10-12 mm
Solution Approach 1:
The patent changes the geometric parameter of the cutting blade from vertical to inclined, creating a V-shaped cut surface. This parameter change enables proper welding of thick steel strips by providing the necessary groove geometry for weld penetration, while maintaining efficient cutting operation.
Solution Approach 2:
The inclined cutting blade performs preliminary shaping of the steel strip ends into V-grooves during the cutting process itself, eliminating the need for separate trimming operations. This preliminary action prepares the surfaces for high-quality welding of thick strips.
2Manufacturing precision
If manual welding is used for thick steel strips, then weld quality can be maintained, but the welding time increases significantly causing interruptions in the pipe mill process
Solution Approach 1:
By changing the cut surface geometry to V-shaped through inclined blades, the patent enables automated welding processes to achieve proper penetration and quality on thick strips, dramatically reducing welding time compared to manual methods while maintaining weld quality.
Solution Approach 2:
The inclined cutting geometry replaces the need for complex manual welding techniques with a more efficient automated welding process, substituting manual mechanical operation with a streamlined system that reduces time loss.
3Manufacturing precision
If additional trimming operations are performed to create V-shaped grooves for welding thick strips, then weld quality improves, but the process complexity and time increase
Solution Approach 1:
The patent merges the cutting operation with the groove formation operation by using inclined cutting blades that create V-shaped surfaces during the cutting process itself. This consolidation eliminates separate trimming operations and reduces overall process complexity while maintaining weld quality.
Solution Approach 2:
The V-groove formation is performed as a preliminary action during the cutting operation itself, preparing the surfaces for welding without requiring additional trimming steps. This eliminates process complexity while ensuring proper geometry for high-quality welds.
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
Enables efficient and high-quality welding of thick steel strips, reducing the risk of interruptions in the pipe mill process by completing the welding process quickly and ensuring uniformity in the weld quality.
Implementation Method 1
A strip joining apparatus that uses inclined cutting blades to create a 'V'-shaped cut on both strips
Implementation Method 2
a welding unit which welds the cut surfaces of the two steel strips to each other, thereby joining them to each other
Data Source
AI summary
Disclosed herein is a strip joining apparatus for pipe mill equipment. The strip joining apparatus cuts a trailing end of a preceding steel strip and a leading end of a following steel strip, and puts the cut surfaces of the two steel strips into contact with each other, and then welds them to each other. Particularly, a cutting blade of a first cutting unit and a cutting blade of a second cutting unit are inclined in the downward direction at predetermined angles relative to each other. Thus, the ends of the two steel strips, which are respectively cut by the cutting blades, define a ‘V’-shape groove. In this state, the cut ends of the two steel strips are put in close contact with each other and are welded to each other, so that the quality of welding of the junction between the thick strips can be enhanced.