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Inner roller type single roller rapid quenching amorphous ribbon preparation method

A single-roll rapid quenching and inner-roll technology, which is applied in the field of preparation of amorphous thin strips, can solve the problems of thin strips such as Rayleigh defects, difficult strip formation, and air bubbles

Active Publication Date: 2014-03-26
TONGZHOU XINGCHEN MACHINERY
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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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  • Inner roller type single roller rapid quenching amorphous ribbon preparation method
  • Inner roller type single roller rapid quenching amorphous ribbon preparation method
  • Inner roller type single roller rapid quenching amorphous ribbon preparation method

Examples

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Embodiment 1

[0047] 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.

[0048] Using 99.5% metal samarium, industrial pure iron, metal cobalt, and metal zirconium as raw materials, it is melted in an intermediate frequency vacuum induction melting furnace. Before melting, the vacuum chamber is first vacuumed, 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 0.10Mpa. The protective atmosphere pressure is 0.05Mpa.

[0049] The inner roller is made of molybdenum, and the inside of the roller is cooled by circulating water. The inner diameter of the cooling roll is 400 mm, and the linea...

Embodiment 2

[0057] The conical fast-setting thin strip method adopted in embodiment 2, the difference of other parameters in embodiment 1 is that the rotational speed of the roller is 16 m / s. Obtain a thin strip with a thickness of 9-12 microns and a Sm with a surface roughness of less than 0.22 microns 1.0 Zr 0.3 Fe 8.1 co 0.6 thin strips, there is no splashing phenomenon in the process, there is no α-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 =1.07T, (BH) max =23.2MGOe. Comparing Example 1 and Example 2, the rotating speed of the roller decreases, the thickness of the strip increases slightly, and the magnetic energy product of the bonded magnet decreases slightly.

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Abstract

The invention provides an inner roller type single roller rapid quenching amorphous ribbon manufacturing method, and belongs to the technical field of preparation of amorphous ribbons. An inner roller type roller is adopted and is of a hollow straight barrel structure, melt is ejected to the inner surface of the inner roller type roller which rotates around a center shaft, the inner surface of the inner roller type roller is of a straight barrel type, and the direction of centrifugal force applied to the melt changes from the direction perpendicular to a contact surface and upward into the direction perpendicular to the contact surface and towards the interior of the contact surface. The ribbons prepared through the method are thinner in size, higher in surface smoothness, and better in performance.

Description

technical field [0001] The invention belongs to the technical field of preparation of amorphous thin strips, 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, specifically a concave 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 and 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 th...

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 TONGZHOU XINGCHEN MACHINERY
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