An amorphous magnetic core annealing jig based on thermal expansion self-stress and product

CN224299290UActive Publication Date: 2026-05-29JIANGSU DACI NANO MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU DACI NANO MATERIAL CO LTD
Filing Date
2025-06-27
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The existing tension annealing process has a temperature-tension balance problem when preparing nanocrystalline ribbons, which leads to uneven local stress and brittleness of the ribbon, affecting the subsequent core winding operation.

Method used

An annealing fixture for amorphous magnetic cores based on thermal expansion self-stress is adopted. By utilizing the structural design of support pins and split hollow cylindrical lobes, uniform internal stress is generated through thermal expansion characteristics, replacing the traditional tension control, and realizing the annealing treatment of the magnetic core.

Benefits of technology

It simplifies the tension control process, avoids brittle breakage of the strip, reduces process complexity and cost, and improves the inductance and retention rate of the magnetic core.

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Abstract

The utility model relates to a magnetic material heat treatment technical field especially based on thermal expansion self stress amorphous magnetic core annealing fixture, including the support pin that is connected with hollow cylinder cooperation, the support pin is circular platform structure, the through hole is opened in the middle part of support pin, the hollow cylinder includes a plurality of split hollow cylinder petal, the inner curved surface of split hollow cylinder petal and the force bearing wall of support pin are pasted, the hollow cylinder is equipped with the penetration special-shaped hollow structure, the special-shaped hollow structure is the circular platform cavity of central symmetry. The utility model discloses the hollow cylinder that is spliced by a plurality of split hollow cylinder petal, and the cooperation support pin is used in cooperation with can avoid the brittle fracture phenomenon that the strip after tension tensile is caused in the process of automatic winding, can also reduce the process step of strip pretreatment, reduce cost.
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