Removable Insulating Mask for Magnetic Pulse Deformation Coils
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Solution Overview
Problem
Existing methods for electrically insulating coils used in magnetic pulse deformation of metal parts are tedious to implement, require significant know-how, are costly, and result in inconsistent quality due to the complexity of applying polyimide polymer sheets on coils with complex geometric shapes, leading to potential damage and increased maintenance.
Innovation Solution
A single-piece, flexible, and removable mask made of insulating material, such as silicone, is used to cover the coil, providing easy installation, improved mechanical resistance, and stability, reducing the need for specialized skills and lowering maintenance costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If polyimide polymer sheets are used to insulate the coil, then electrical insulation is achieved, but the application process becomes tedious and requires significant know-how
Solution Approach 1:
The patent combines multiple separate polyimide sheets into a single integrated mask component. This mask includes a first part for the slot, a second part for the active part, a third part for the opening, and a fourth part for longitudinal faces, all as one piece. This merging eliminates the need to apply multiple separate sheets, significantly simplifying the insulation application process while maintaining comprehensive electrical insulation coverage.
Solution Approach 2:
The mask is segmented into four functional parts (first part for slot, second part for active part, third part for opening, fourth part for longitudinal faces) that are integrated into a single piece. This segmentation allows each part to be optimized for its specific function while being manufactured as one unified component, resolving the contradiction between comprehensive insulation coverage and ease of application.
2Reliability
If polyimide polymer sheets are applied on coils with complex geometric shapes, then electrical insulation is provided, but the quality becomes inconsistent due to application complexity
Solution Approach 1:
By integrating all insulation functions into a single pre-manufactured mask, the patent eliminates variability in application quality. The mask is manufactured with precise geometric shapes that match the coil's complex geometry, ensuring consistent insulation coverage across all coils without relying on operator skill or manual application precision.
3Reliability
If multiple sheets of polyimide polymer material are applied in the slot, then electrical insulation between branches is achieved, but the process becomes more complex as slot thickness is reduced
Solution Approach 1:
The first part of the mask is designed as a single integrated component that fits into the slot, replacing the need to apply multiple separate polyimide sheets. This single-piece design simplifies the insulation process in the slot while maintaining effective electrical insulation between the first and second branches, even in reduced slot thickness configurations.
4Ease of operation
If a single-piece mask is used to cover the coil, then installation becomes easy and quick, but the mask must provide comprehensive insulation coverage
Solution Approach 1:
The mask integrates four distinct insulation functions into one piece: the first part for slot insulation, the second part for active part insulation, the third part for opening coverage, and the fourth part for longitudinal face insulation. This single component provides comprehensive electrical insulation coverage while being designed for easy installation as one piece, resolving the contradiction between installation simplicity and insulation completeness.
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 mask allows for quick and efficient insulation of coils, ensuring consistent results and reducing maintenance costs by being easily replaceable without affecting the coil's lifespan, thus enhancing the reliability and efficiency of magnetic pulse deformation processes.
Implementation Method 1
The capacitor(s) are used to store a certain amount of electrical energy. The intense magnetic field created is the result of a very rapid discharge of this electrical energy into the coil in the form of a very high-intensity, variable current
Implementation Method 2
The current generates a variable magnetic field between the coil and the part, previously placed nearby, and induces eddy currents in this part. These eddy currents, combined with the surrounding magnetic field, develop forces in the part
Implementation Method 3
To prevent any passage of electricity between a coil used and the part to be deformed, said coil requires electrical insulation at its interface with said part
Data Source
Figure 1~3
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Figure 7~9
AI summary
The assembly (10) for deforming metal parts by magnetic pulse comprises an induction coil (20) comprising: - branches (21, 22) designed to be connected to a power supply, said branches (21, 22) extending adjacent to one another so as to define a slot (23), - an active portion connected to the first and second branches, a surface of which, referred to as an "active surface (27)," is designed to be arranged opposite a part to be deformed, the assembly (10) further comprising: an integral mask (30), configured to cooperate in a detachable manner with all or a portion of the coil (20) when the mask is in an operating position on the coil, the mask having a shape that is at least partially complementary to the shape of the coil such that when it is in the operating position, it is inserted by a first portion (31), into the slot and it covers, by a second portion (32), the active surface of the coil, the mask being made of an electrically insulating material.