Method for producing nodulizing agent

A production method and technology of a nodularizing agent, applied in the field of nodularizing agent, can solve the problems of low absorption rate of effective elements and violent reaction, and achieve the effects of less segregation of chemical components, elimination of environmental pollution, and stable quality

Inactive Publication Date: 2009-08-19
TIANJIN WANLU OF SCI & TECH +1
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  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of severe reaction and low absorption rate of effective elements in the melting process of rare earth magnesium silicon ferrosilicon nodulizer, stabilize and improve product quality, reduce production cost and achieve energy recycling, reduce environmental pollution

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  • Method for producing nodulizing agent
  • Method for producing nodulizing agent
  • Method for producing nodulizing agent

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Embodiment Construction

[0017] The implementation of the present invention will be further described in conjunction with the accompanying drawings:

[0018] Before pressing into the metal magnesium 7, for the spheroidizing agent injected into the ladle, the silicon content of the multi-element alloy liquid is in the range of 43% to 48%, and the temperature of the multi-element alloy liquid is between 1280 and 1330 when the magnesium is pressed. ℃, in order to reduce the cooling of the multi-component alloy liquid and reduce the melting loss of the sleeve 2, the lower pressure plate 3, and the pressure column 4, the outer layer is coated with refractory and heat-insulating materials. When the sleeve 2 touches the bottom of the processing bag 1, the bottom of the upper platen 5 should be at the upper port of the processing bag 1 to reduce the space above the liquid level of the alloy in the bag when the magnesium alloy reacts. The distance between the core plates 15 of each layer in the combined molten...

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Abstract

A manufacturing method of nodulizers with small chemical composition segregation and low oxidation loss is characterized in that the first part is an extruded magnesium treatment device which reacts under the condition of being filled with inert gases or carbon dioxide, thus effectively controlling the reaction time of the magnesium metal and superalloy liquid and conducing to the magnesium metal to form Mg2Si; the second part is a combined molten pool for pouring nodulizer alloy liquid; the combined molten pool and the pouring basin can ensure that the nodulizer alloy liquid rapidly fills the die cavity of the molten pool in a possibly short time and that the nodulizer alloy liquid of the pouring type die cavity can congeal at the same time. The alloy liquid is evenly cooled in a closed die cavity, thereby overcoming the oxidation and segregation of the upper surface of the nodulizer alloy liquid. The product quality is stable and the manufacturing cost is obviously lower than that of the nodulizer produced by the secondary smelting and remelting method. The method cancels the secondary smelting process of the nodulizers of rare earth-Mg-Si-Fe, achieves the purpose of energy-saving and environment protection and eliminates environmental pollution.

Description

technical field [0001] The invention relates to a production method of a nodulizer with less segregation of chemical components and low oxidation loss. Background technique [0002] At present, the methods of producing rare earth magnesium ferrosilicon nodulizers are mainly the secondary smelting remelting method and the alloy hydraulic pressure adding magnesium method. The production of nodulizer by traditional secondary smelting and remelting method not only has high cost, but also has more magnesium burning loss and high magnesium oxide content in the nodulizer. In the process of the disclosed alloy hydraulic pressure adding magnesium method, except for the top surface, other parts of the pressed magnesium ingot are completely exposed and can directly contact with the alloy liquid. In addition, the distance between the exposed magnesium ingot and the alloy liquid surface The distance is short, which is not conducive to being absorbed by the alloy liquid; adding magnesium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C21C1/10
Inventor 刘年路
Owner TIANJIN WANLU OF SCI & TECH
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