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A kind of preparation method of aluminum molybdenum chromium iron silicon master alloy

A technology of master alloy and aluminum molybdenum, applied in the field of preparation of aluminum molybdenum chromium iron silicon master alloy, can solve the problems of titanium alloy quality influence, increase titanium alloy brittleness, poor alloy uniformity, etc., to achieve excellent performance, prevent component segregation, accurate effect of ingredients

Active Publication Date: 2021-07-09
CHENGDE TIANDA VANADIUM IND
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  • Claims
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Problems solved by technology

This method has the advantages of simple equipment, single process, and convenient operation. The disadvantage is that the uniformity of the alloy is poor, and impurities, especially gas phase impurities such as oxygen and nitrogen, cannot be controlled. Nitrogen will increase the brittleness of the titanium alloy and directly affect the titanium alloy. quality makes a difference

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  • A kind of preparation method of aluminum molybdenum chromium iron silicon master alloy
  • A kind of preparation method of aluminum molybdenum chromium iron silicon master alloy
  • A kind of preparation method of aluminum molybdenum chromium iron silicon master alloy

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[0030] The embodiment of the present invention provides a method for preparing an aluminum-molybdenum-chromium-iron-silicon master alloy, comprising the following steps:

[0031] Mixing the first aluminum source and the molybdenum source, performing an aluminothermic reaction, to obtain an aluminum-molybdenum primary alloy;

[0032] The aluminum-molybdenum primary alloy, chromium, iron, silicon and a second aluminum source are mixed and vacuum smelted to obtain an aluminum-molybdenum-chromium-iron-silicon master alloy.

[0033] In the examples provided by the present invention, the first aluminum source and the molybdenum source are mixed for aluminothermic reaction to obtain a primary alloy of aluminum and molybdenum.

[0034] In order to further optimize the above technical solution, before mixing the first aluminum source and molybdenum source, first dry the first aluminum source and molybdenum source, the drying temperature is 100-120°C, preferably 110°C, and the drying ti...

Embodiment 1

[0058] 1. Aluminothermic reaction smelting process

[0059] (1) Dry the aluminum powder, molybdenum trioxide and molybdenum dioxide at a drying temperature of 110°C and a drying time of 12 hours;

[0060] (2) Calculate the mass ratio of the alloy in the aluminothermic smelting process based on the mass fraction of molybdenum in molybdenum trioxide and molybdenum dioxide and the aluminum consumption of molybdenum trioxide and molybdenum dioxide in the chemical reaction: aluminum powder and molybdenum trioxide, di The mass ratio of molybdenum oxide is 1.998:1.588:1.000;

[0061] (3) Aluminum powder, molybdenum trioxide and molybdenum dioxide are loaded into a mixer and mixed for 4 minutes at a rate of 120r / min;

[0062] (4) Preheat the mixed aluminum powder, molybdenum trioxide and molybdenum dioxide to a furnace loading temperature of 43°C, ignite and smelt, the reaction temperature is 1950°C-2250°C, the reaction time is 35-45 seconds, and it will be released after 24 hours. ...

Embodiment 2

[0081] 1. Aluminothermic reaction smelting process

[0082] (1) Dry the aluminum powder, molybdenum trioxide and molybdenum dioxide at a drying temperature of 110°C and a drying time of 12 hours;

[0083] (2) Calculate the mass ratio of the alloy in the aluminothermic smelting process based on the mass fraction of molybdenum in molybdenum trioxide and molybdenum dioxide and the aluminum consumption of molybdenum trioxide and molybdenum dioxide in the chemical reaction: aluminum powder and molybdenum trioxide, di The mass ratio of molybdenum oxide is 1.998:1.588:1.000;

[0084] (3) Aluminum powder, molybdenum trioxide and molybdenum dioxide are loaded into a mixer and mixed for 4 minutes at a rate of 120r / min;

[0085] (4) Preheat the mixed aluminum powder, molybdenum trioxide and molybdenum dioxide to a furnace loading temperature of 43°C, ignite and smelt, the reaction temperature is 1950°C-2250°C, the reaction time is 35-45 seconds, and it will be released after 24 hours. ...

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Abstract

The invention belongs to the technical field of metal materials, and in particular relates to a preparation method of an aluminum-molybdenum-chromium-iron-silicon master alloy. The preparation method comprises the following steps: (1) mixing a first aluminum source and a molybdenum source, performing an aluminothermic reaction to obtain an aluminum-molybdenum primary alloy; (2) mixing the aluminum-molybdenum primary alloy with chromium, iron, silicon and The second aluminum source is mixed and vacuum smelted to obtain an aluminum-molybdenum-chromium-iron-silicon master alloy. In the present invention, by selecting the combination method of thermite and vacuum smelting, by controlling the smelting of the intermediate frequency vacuum induction furnace, the elements of aluminum, molybdenum, chromium, iron, and silicon are evenly distributed in the alloy, and the content of gas phase impurities such as O and N is reduced. When TC6 titanium alloy is used, it helps to homogenize the composition of titanium alloy.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a preparation method of an aluminum-molybdenum-chromium-iron-silicon master alloy. Background technique [0002] Titanium and its alloys have excellent properties, such as high strength, corrosion resistance, high temperature resistance, and good process performance. Therefore, they are increasingly becoming attractive materials in the field of modern industrial science and technology. , chemical industry, light industry, metallurgy, machinery and energy and many other fields have been widely used. [0003] Aluminum, molybdenum, chromium, iron, and silicon are the main alloy components of titanium alloys, and are usually added to titanium alloys in the form of master alloys. The grade of titanium alloy mainly used in the aluminum-molybdenum-chromium-iron-silicon master alloy provided by the present invention is TC6. TC6 titanium alloy is a good martensitic two-phase tit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/00
CPCC22C1/026C22C1/03C22C21/00
Inventor 王志军刘强孙鑫何建成刘志彬段善博纪海龙马英梁王东华
Owner CHENGDE TIANDA VANADIUM IND
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