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Method for preparing amorphous alloy thin strip through quenching conical single roller quickly

A single-roll rapid quenching and amorphous alloy technology, which is applied in the field of alloy thin strip preparation, can solve the problems of rapid solidification thin strip melt droplet splashing, thin strip Rayleigh defects, and difficulty in forming strips, etc.

Inactive Publication Date: 2014-03-26
河北聚鑫腾达五金工具有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] The purpose of the present invention is to provide a new method of throwing strips, which overcomes the problems in the prior art, that is, solves the splashing of liquid droplets of the fast-setting thin strips in the single-roller fast-setting thin strip method, the difficulty of forming strips, and the existence of thin strips. To avoid defects, bubbles and other problems, prepare a rapidly quenched amorphous alloy thin strip with thinner size, higher surface finish and better performance

Method used

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  • Method for preparing amorphous alloy thin strip through quenching conical single roller quickly
  • Method for preparing amorphous alloy thin strip through quenching conical single roller quickly
  • Method for preparing amorphous alloy thin strip through quenching conical single roller quickly

Examples

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Embodiment 1

[0051] A method for preparing a fast-quenched amorphous alloy thin strip, including batching, smelting, secondary smelting, strip spraying, and harvesting. The mass percentage of its chemical composition is: 21.57%Sm, 72.84%Fe, 1.66%Zr, 3.93%Co.

[0052] Using 99.5% metal samarium, industrial pure iron, metal cobalt, and metal zirconium as raw materials, it is smelted in an intermediate frequency vacuum induction melting furnace. Before smelting, the vacuum chamber is first evacuated, and then high-purity argon is used as a protective gas to avoid alloy oxidation. . The melting temperature is 1600°C. Secondary melting is carried out in the induction ladle, and the spray belt pressure is established in the nozzle package, and the spray belt pressure is 0.05Mpa. The protective atmosphere pressure is 0.01Mpa.

[0053] The conical roller is made of molybdenum, the angle between the conical slope surface and the central axis is 80°, and the inside of the flat roller is cooled by ...

Embodiment 2

[0060] The conical fast-setting thin strip method adopted in this embodiment, the prepared Sm 1.0 Zr 0.3 Fe 8.1 co 0.6 Fast-setting thin zone, the difference is that the angle between the conical slope surface and the central axis is 45°, and other parameters are as in Example 1. Obtain a thin strip with a uniform thickness of 18-19 microns and a Sm with a surface roughness of less than 0.3 microns 1.0 Zr 0.3 Fe 8.1 co 0.6 Fast-setting thin strips are fast-setting thin strips, and there is no splashing phenomenon in the process of throwing the strips. There is no a‐Fe soft magnetic phase in the alloy, and Sm is formed after grinding and nitriding 1.0 Zr 0.3 Fe 8.1 co 0.6 N x , after being made into a bonded magnet, the magnetic property is B r =0.97T, (BH) max =22.3MGOe.

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Abstract

The invention discloses a method for preparing an amorphous alloy thin strip through quenching conical single roller quickly and belongs to the technical field of alloy thin strip preparation. According to the method, a conical roll wheel is adopted, and melt is sprayed to a conical inclined slope face rotating around a conical central shaft and is made to form an included angle with a contact face from being perpendicular to the contact face due to the function of centrifugal force. On the edge of the conical inclined slope face, the amorphous alloy thin strip cools itself, contracts and comes off a roll wheel by itself under the action of centrifugal force. The thin strip prepared through the method in thinner is size, higher in surface smoothness, and better in performance.

Description

technical field [0001] The invention belongs to the technical field of alloy thin strip preparation, and relates to a novel single-roll strip stripping method to solve the problems of liquid droplets splashing and difficult strip formation during the strip stripping process, in particular to a disc-type single-roll quick quenching method. technical background [0002] Single roll quick quenching method, also known as melt cooling roll spin coagulation method, continuous casting thin strip method. A method invented by Bedell to produce amorphous ribbons, such as figure 1 with figure 2 shown. The molten metal sprays on the surface of the cooling roll rotating at high speed and spreads under the action of gravity and wetting to form a molten pool; the interface layer between the molten pool and the cooling roll is quenched and solidified, and rotates with the cooling roll to continue cooling to form a thin metal strip; Thin metal strip detaches from the rim surface of the r...

Claims

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Application Information

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IPC IPC(8): B22D11/06
Inventor 王波朱晓岗严辉李耳王如志张铭宋雪梅侯育冬朱满康刘晶冰汪浩
Owner 河北聚鑫腾达五金工具有限公司
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