A kind of slag system for iron-based amorphous alloy strip and a preparation method of iron-based amorphous alloy strip

An iron-based amorphous alloy and slag-based technology, which is applied in the field of iron-based amorphous alloys, can solve the problems of difficulty in magnetic core preparation, the influence of the straightness of the spray belt, and the inability to completely discharge the inclusions.

Active Publication Date: 2021-06-18
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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  • Application Information

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Problems solved by technology

Therefore, the intermediate frequency furnace with this type of furnace lining smelts Fe-Si-B molten steel. The inclusions in the molten steel can only be removed by sedation or argon blowing. It will be brought into molten steel under the action of
[0006] The inclusions in the molten steel cannot be ruled out and have a great impact on the preparation of the amorphous thin strip. On the one hand, it will affect the straightness of the spray strip; Difficulties

Method used

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  • A kind of slag system for iron-based amorphous alloy strip and a preparation method of iron-based amorphous alloy strip
  • A kind of slag system for iron-based amorphous alloy strip and a preparation method of iron-based amorphous alloy strip
  • A kind of slag system for iron-based amorphous alloy strip and a preparation method of iron-based amorphous alloy strip

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preparation example Construction

[0026] The present application also provides a method for preparing an iron-based amorphous alloy strip, comprising the following steps:

[0027] Raw materials are prepared according to the composition ratio of iron-based amorphous alloy strips, and the raw materials and slag are smelted in an intermediate frequency furnace lined with quartz sand to obtain molten steel; the slag is made of 50-60 wt% SiO 2 , 15-20wt% Al 2 o 3 And 25 ~ 30wt% CaO composition;

[0028] The molten steel is rapidly quenched by a single roll to obtain an iron-based amorphous alloy strip.

[0029] The preparation method of the iron-based amorphous alloy strip described in the present application is carried out according to methods well known to those skilled in the art, except that a slag system with a specific composition is used for slagging during the smelting process, so as to realize the removal of inclusions in molten steel; wherein The silicon dioxide and calcium oxide are additional slag co...

Embodiment

[0033] Raw materials are prepared according to the composition of iron-based amorphous alloy strips, and the total amount of alumina brought into the raw materials is 0.6kg (calculation of the amount of alumina: 1000kg of aluminum-containing raw materials, wherein the aluminum content is 0.03%, then the amount of aluminum brought in is 0.3kg, the total amount of alumina calculated from the alumina-oxygen reaction is 0.6kg) The slag system is based on SiO 2 50~60wt%, Al 2 o 3 15-20wt%, CaO 25-30wt% ratio, the calculated amount of glass to be added is about 2kg, and the amount of calcium oxide is about 1kg;

[0034] When smelting raw materials, the prepared glass and calcium oxide are fully mixed and then put into the furnace for melting. During the smelting process, the slag is not allowed to be taken out, and the molten steel is taken out before the molten steel is tapped. The Fe- Si-B series molten steel, non-metallic inclusions in molten steel are shown in Table 1;

[0...

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Abstract

The invention provides a slag system for iron-based amorphous alloy strips, which consists of 50-60wt% SiO 2 , 15-20wt% Al 2 o 3 And 25 ~ 30wt% CaO composition. The present application also provides a method for preparing an iron-based amorphous alloy strip, comprising the following steps: preparing raw materials according to the composition ratio of the iron-based amorphous alloy strip, preparing a slag system according to the raw materials, and combining the raw materials and The slag is smelted in an intermediate frequency furnace lined with quartz sand to obtain molten steel; the slag is made of 50-60wt% SiO 2 , 15-20wt% Al 2 o 3 and 25-30wt% CaO; the molten steel is rapidly quenched by a single roll to obtain an iron-based amorphous alloy strip. This application adopts a specific slag system, which can denature the hard inclusions in molten steel into low melting point compounds. This type of compound has a low melting point and is easy to float up and discharge in liquid form at a temperature of 1600K. .

Description

technical field [0001] The invention relates to the technical field of iron-based amorphous alloys, in particular to a slag system used for iron-based amorphous alloy strips and a preparation method for iron-based amorphous alloy strips. Background technique [0002] The iron-based amorphous strip has excellent soft magnetic properties, and the energy-saving effect is obvious. The formation of amorphous ribbons requires rapid cooling to obtain. The composition of iron-based amorphous strip is mainly Fe, Si and B, and the content of Si and B is more than 2%. Therefore, Fe-Si-B molten steel is generally smelted with acid furnace lining. At present, quartz sand is mainly used for smelting. It is smelted in an intermediate frequency furnace built and sintered. The intermediate frequency furnace heats and melts pure iron, silicon, and ferroboron through electromagnetic induction, and after melting into molten steel with qualified components, it blows argon for a period of time ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/02C22C33/04C21C7/076B22D11/06
CPCB22D11/0611C21C7/076C22C33/003C22C33/04C22C45/02Y02P10/20
Inventor 陈昌刘树海张彦政
Owner QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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