Detachable Shearing Die Insert for Super-High-Tension Steel Wear
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Solution Overview
Problem
The frequent replacement and maintenance of die tools in press-forming processes, especially when working with super-high-tension steel sheets, lead to increased time and costs due to the need for applying wear-resistant coatings and tool steels to all areas of the shearing blade, even where damage is unlikely.
Innovation Solution
A shearing die with a detachable fitting part made of hard tool steel, subjected to nitriding or coating treatments, is used in the second shearing process to reduce wear and extend the life of the die tool, while only the high-wear areas are replaced and treated.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wear-resistant coatings and tool steels are applied to all areas of the shearing blade, then the die damage resistance is improved, but the time and costs for replacement and maintenance increase
Solution Approach 1:
The patent applies wear-resistant coatings and uses hard tool steel exclusively in the fitting part that contacts the first-sheared edge, rather than treating the entire shearing blade uniformly. This localized application of enhanced materials and treatments addresses wear resistance only where it is actually needed, reducing unnecessary material costs and maintenance requirements for non-critical areas of the blade.
Solution Approach 2:
The shearing blade is divided into distinct functional zones: the fitting part that contacts the first-sheared edge requires wear-resistant treatment, while other parts of the blade have different requirements. This segmentation allows differential treatment of blade sections based on their specific functional demands, optimizing both performance and maintenance characteristics.
2Reliability
If wear-resistant coatings and tool steels are applied to all areas of the shearing blade, then the die damage resistance is improved, but the manufacturing costs increase
Solution Approach 1:
The patent applies wear-resistant coatings and uses hard tool steel exclusively in the fitting part that contacts the first-sheared edge, rather than treating the entire shearing blade uniformly. This localized application of enhanced materials and treatments addresses wear resistance only where it is actually needed, reducing unnecessary material costs and maintenance requirements for non-critical areas of the blade.
3Reliability
If the shearing blade is made entirely of hard tool steel with coating treatment, then the wear resistance is improved, but the complexity of the shearing die increases
Solution Approach 1:
The patent applies wear-resistant coatings and uses hard tool steel exclusively in the fitting part that contacts the first-sheared edge, rather than treating the entire shearing blade uniformly. This localized application of enhanced materials and treatments addresses wear resistance only where it is actually needed, reducing unnecessary material costs and maintenance requirements for non-critical areas of the blade.
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 reduces the time and costs associated with die tool replacement and maintenance, while preventing damage to the die tools during the shearing of super-high-tension steel sheets, thereby improving operational efficiency and reducing costs.
Implementation Method 1
the fitting part is subjected to a surface nitriding treatment
Implementation Method 2
the fitting part is subjected to a coating treatment
Data Source
AI summary
A shearing die for preventing damage of a die tool in shearing of a super-high-tension steel sheet and a press-forming method using the same. The shearing die for shearing a metal sheet in a direction intersecting a first-sheared edge of the metal sheet in press-working including a plurality of shearing processes to produce a formed article from the metal sheet by press-forming, in which the shearing die comprises a fitting part that can detach a shearing blade in the vicinity of a region coming in contact with an end of the first-sheared edge.