Electromagnetic drive device and method of manufacturing the same, soft magnetic material

CN122177612APending Publication Date: 2026-06-09ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG SANHUA INTELLIGENT CONTROLS CO LTD
Filing Date
2024-12-06
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

The existing solenoid valves have low utilization of the static iron core material, and are prone to cracking after cold heading, resulting in poor magnetism and corrosion resistance.

Method used

A soft magnetic material with Si, Cr, Mo, Nb, and Fe as the main components is used to manufacture fixed magnetic components through cold heading. The content of each element is controlled within the range of Si 1.1-2.0%, Cr 17.3-18.5%, Mo 1-2%, Nb 0.1-0.35%, and Fe 77.15-80.5%. Annealing treatment is also used to optimize the material composition and processing technology to improve material utilization and performance.

Benefits of technology

It achieves high material utilization of fixed magnetic components, reduces production costs, and possesses good magnetism, corrosion resistance, and fewer cracks, meeting the application requirements of solenoid valves.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application provides an electromagnetic drive device, including a fixed magnetic component. The fixed magnetic component is made of a soft magnetic material, and its main components, based on 100% by mass, include Si, Cr, Mo, Nb, and Fe. The Si content ranges from 1.1% to 2.0%, the Cr content from 17.3% to 18.5%, the Mo content from 1% to 2%, the Nb content from 0.1% to 0.35%, and the Fe content from 77.15% to 80.5%. This fixed magnetic component can be cold-forged, achieving both good magnetic properties and corrosion resistance with fewer cracks. This application also provides a method for manufacturing the electromagnetic drive device, which improves material utilization and maintains good magnetism and corrosion resistance of the solenoid valve.
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