Fe-P-Cr Alloy Thin Plate via Electroforming
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Solution Overview
Problem
Conventional methods for producing ultrathin Fe—P—Cr alloy thin plates with excellent high-frequency magnetic characteristics are limited by the complexity and cost of rolling processes, and the addition of resistivity-increasing elements like Si and P can deteriorate rolling properties, making it difficult to achieve thicknesses less than 100 μm and high commercial production efficiency.
Innovation Solution
An electroforming process is used to deposit an Fe—P—Cr alloy thin plate with 6.0-13.0 wt% P, 0.002-0.1 wt% Cr, and optional Ni, forming a mixed amorphous-crystal grain structure that enhances magnetic properties and resistivity, while avoiding the limitations of rolling processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If rolling process is used to produce ultrathin Fe-P-Cr alloy plates, then thickness can be reduced to less than 100 μm, but rolling properties deteriorate due to addition of resistivity-increasing elements (Si and P), making production difficult
Solution Approach 1:
The patent replaces the mechanical rolling process with an electroforming process. Instead of mechanically rolling the alloy through heavy rollers, the Fe-P-Cr alloy thin plate is produced by electrodepositing iron, phosphorus, and chromium from an electrolyte solution onto a cathode, then peeling off the deposited layer. This substitution eliminates the rolling property deterioration issue caused by adding resistivity-increasing elements like Si and P, while achieving ultrathin thickness of less than 100 μm.
2Reliability
If conventional rolling process with Si and P addition is used, then resistivity increases improving high frequency characteristics, but manufacturing complexity and cost increase due to process limitations
Solution Approach 1:
The patent replaces the complex conventional rolling process with a simpler electroforming process. The electroforming method allows direct deposition of Fe-P-Cr alloy with controlled composition from an electrolyte solution, eliminating the need for complex rolling mill equipment and multiple processing steps. This reduces manufacturing process complexity while maintaining the ability to achieve high resistivity and excellent high frequency characteristics through controlled addition of Si and P elements.
3Reliability
If rolling process is used with high resistivity element addition, then high frequency characteristics improve, but productivity decreases due to process complexity and low production efficiency
Solution Approach 1:
The patent replaces the low-productivity conventional rolling process with a high-productivity electroforming process. The electroforming method enables continuous deposition of Fe-P-Cr alloy thin plates with controlled composition, allowing for rapid production of ultrathin plates with thickness less than 100 μm. This substitution significantly improves production efficiency while maintaining excellent high frequency characteristics through controlled addition of resistivity-increasing elements.
4Length of stationary object
If thickness is reduced to ultrathin level (less than 100 μm) through rolling, then high frequency characteristics improve, but manufacturing cost increases sharply
Solution Approach 1:
The patent replaces the expensive ultrathin rolling process with a cost-effective electroforming process. The electroforming method uses simple equipment consisting of an electrolyte solution, power supply, and cathode, eliminating the need for expensive ultrathin rolling mill equipment. This substitution dramatically reduces manufacturing cost while achieving ultrathin thickness of less than 100 μm and excellent high frequency characteristics through controlled alloy composition.
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 process enables the production of ultrathin Fe—P—Cr alloy plates with improved high-frequency magnetic characteristics, reduced iron loss, and increased workability, suitable for applications in motor cores and inverter systems, with a simpler and less expensive manufacturing process compared to conventional methods.
Implementation Method 1
applying a current to the formed plating solution; electrodepositing an Fe-P-Cr alloy layer including, in terms of wt %, P (6.0-13.0%), Cr (0.002-0.1%), and the balance of Fe and other inevitable impurities on a cathode plate using the current
Data Source
AI summary
The present invention relates to an Fe—P—Cr alloy thin plate and a method for manufacturing the same. An embodiment of the present invention provides an Fe—P—Cr alloy thin plate including, in terms of wt %, P (6.0-13.0%), Cr (0.002-0.1%), and the balance of Fe and other inevitable impurities.