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A method for preparing amorphous alloy thin strip by disc-type single-roller throwing strip

A technology of amorphous alloy and thin strip, which is applied in the field of alloy thin strip preparation, can solve problems such as difficult strip formation, air bubbles, thin strip Rayleigh defects, etc., and achieve the effect of large melt spreading area and good strip formation performance

Active Publication Date: 2016-08-17
TONGZHOU XINGCHEN MACHINERY
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  • 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 stripping, which overcomes the problems in the prior art under the same conditions, that is, solves the splashing of the fast-setting thin strip melt droplets in the single-roller fast-setting thin strip method, which is not easy to form a strip, There are problems such as Rayleigh defects and air bubbles in the thin strip, and a rapidly quenched amorphous alloy thin strip with thinner size, higher surface finish and better performance is prepared

Method used

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  • A method for preparing amorphous alloy thin strip by disc-type single-roller throwing strip
  • A method for preparing amorphous alloy thin strip by disc-type single-roller throwing strip
  • A method for preparing amorphous alloy thin strip by disc-type single-roller throwing strip

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Embodiment 1

[0048] 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.

[0049] 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.

[0050] In the belt spraying step, the nozzle and the cooling roller form a dynamically stable planar molten pool that spreads in two directions, and the temperature of t...

Embodiment 2

[0059] The conical fast-setting thin strip method adopted in this embodiment prepares high-performance Sm 1.0 Zr 0.3 Fe 8.1 co 0.6 Fast-setting thin strips, the thickness and width of the thin strips are shown in Table 2. The difference is that the rotating speed of the roller edge is 40m / s, and others are as in embodiment 1.

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Abstract

The invention belongs to the technical field of alloy thin belt preparation and discloses a method for adopting belt spinning of a disc-type single roller to prepare an amorphous alloy thin belt. The method includes adopting the disc-type roller, spraying melt on the surface of a disc rotating around a disc central shaft, enabling a direction in which a centrifugal force is applied on the melt to be parallel to a contact face, namely the surface of the disc, and forming the amorphous alloy thin belt after an amorphous thin belt at the edge of the disc automatically breaks away from the roller under the action of cooling contraction and the centrifugal force. The amorphous alloy thin belt prepared by the method is thinner in 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 strip stripping 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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Patent Type & Authority Patents(China)
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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