Magnetic Foreign Object Capture for Clean Electrical Steel Lines
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Solution Overview
Problem
Existing methods for manufacturing directional electrical steel sheets struggle with removing foreign objects such as particles, chips, spatters, and fumes from the steel sheet surface, which can contaminate facilities and deteriorate the performance of optical systems used in the manufacturing process.
Innovation Solution
A foreign object capturing device is designed to include a captured body unit with an inlet and outlet for air containing magnetic foreign objects, and a magnetic separation unit with magnetic members and a nonmagnetic member. This configuration allows for the separation and removal of magnetic foreign objects using magnetic attraction, with the nonmagnetic member preventing direct attachment to the magnetic members, facilitating easy detachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If magnetic members are used to capture magnetic foreign objects, then magnetic foreign objects can be removed from the air, but magnetic foreign objects cannot be easily detached from the magnetic members after attachment
Solution Approach 1:
The magnetic member is divided into multiple magnet units that can be independently moved. Each magnet unit can be separated from the others, allowing magnetic foreign objects attached to one unit to be detached by moving that specific unit away from the collection surface, thus solving the detachment difficulty while maintaining capture efficiency
Solution Approach 2:
The magnetic member transitions from a static structure to a dynamic one where individual magnet units can be moved independently. This dynamic configuration allows the system to capture magnetic foreign objects effectively when magnets are in position, and easily detach them by moving the magnets away, resolving the contradiction between capture reliability and detachment ease
2Productivity
If foreign objects are not removed immediately during production, then production efficiency is maintained, but foreign objects contaminate surrounding facilities and deteriorate optical system performance
Solution Approach 1:
The magnetic separation unit is integrated into the production line to perform preliminary removal of magnetic foreign objects during the manufacturing process itself. This preliminary action prevents contamination of facilities and optical systems while maintaining production efficiency, as the separation occurs concurrently with production rather than as a separate post-processing step
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 foreign object capturing device effectively removes foreign objects from the air, including magnetic ones that are easily detached, thereby improving the quality and productivity of the electrical steel sheet manufacturing process by preventing contamination and maintaining optical system performance.
Implementation Method 1
a magnetic separation unit including magnetic members, which are linked to the captured body unit and separate magnetic foreign objects from air flowing in the captured body unit using attraction
Data Source
AI summary
A foreign substance capturing apparatus according to an embodiment of the present invention may comprise: a capturing body unit having an inlet port for introducing the air including magnetic foreign substances and an outlet port for discharging the air from which the magnetic foreign substances have been removed; and a magnetic isolation unit connected to the capturing body unit, including a magnetic member for isolating, by an attractive force, the magnetic foreign substances from the air flowing in the capturing body unit, and provided with a nonmagnetic member surrounding the magnetic member.