A method for producing a rapidly solidified iron-based alloy strip

The method for preparing rapid solidification iron-based alloy strip by high-precision weighing and optimized parameters has solved the problem of non-standard preparation of low-alloy steel strip, achieved precise alloy composition and microstructure refinement, and improved material properties and production standardization.

CN119259932BActive Publication Date: 2026-07-24NAVAL UNIV OF ENG PLA
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Patent Information

Application Number
CN202411029880.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-07-30
Publication Date
2026-07-24
Estimated Expiration
2044-07-30

AI Technical Summary

Technical Problem

In the existing technology, there is little research on the preparation of low alloy steel strip under rapid cooling conditions, and the process parameters have not been standardized. They rely heavily on the experience of operators, resulting in a non-standardized preparation process.

Method used

The raw materials are weighed using a high-precision balance, and a JVSM-2 high-vacuum induction melting and strip spinning machine is used. Through induction melting and rapid cooling strip spinning functions, the precise ratio of alloy composition is set to ensure rapid solidification and microstructure refinement of the alloy. Argon gas protection is used to avoid the introduction of impurities. Parameters such as copper wheel speed, injection pressure and nozzle distance are optimized to achieve efficient alloy preparation.

Benefits of technology

It achieves precise proportioning of alloy components and refinement of microstructure, improves the mechanical properties of materials, ensures standardized production and efficient alloy preparation, and reduces reliance on operational experience.

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Abstract

The application belongs to the technical field of alloy preparation, and discloses a preparation method of a rapidly solidified iron-based alloy strip, which comprises the following steps: weighing electrolytic iron, monocrystalline silicon, carbon powder and diiron trioxide, vacuum smelting, and repeatedly smelting and cooling to obtain a cast-state master alloy. The master alloy is cut and placed in a quartz tube, and is smelted and strip cast at specific parameters to prepare the rapidly solidified iron-based alloy strip. The parameters for preparing the Fe-O system strip sample are set as follows: the rotating speed of the copper wheel is 2050 r / min, the injection gas pressure is 0.002 MPa, and the distance from the nozzle to the copper wheel is 0.02 mm; the parameters for preparing the Fe-Si-C-O system strip sample are set as follows: the rotating speed of the copper wheel is 2400 r / min, the injection gas pressure is 0.004 MPa, and the distance from the nozzle to the copper wheel is 0.03 m, so that the accurate proportioning of alloy components is ensured, the rapid solidification of the alloy is realized by using the chilling strip casting function of the high-vacuum induction smelting strip caster, the alloy organization is significantly refined, the mechanical properties of the material are improved, the experience summary of the operator is not needed, and the standardization during production is improved.
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