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Aluminum-tin-zirconium-molybdenum-chromium intermediate alloy and preparation method thereof

An intermediate alloy, molybdenum-chromium technology, applied in the field of metal materials, can solve problems such as unstable product performance and difficulties in the intermediate process of producing titanium alloys, and achieve the effects of easy control, improved uniformity and stability, and simple process

Inactive Publication Date: 2020-02-07
CHENGDE TIANDA VANADIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the titanium alloy master alloys use binary alloys. In order to meet the performance requirements during use, several binary alloys need to be added, which is likely to cause unstable product performance and bring difficulties to the intermediate process of producing titanium alloys.

Method used

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  • Aluminum-tin-zirconium-molybdenum-chromium intermediate alloy and preparation method thereof
  • Aluminum-tin-zirconium-molybdenum-chromium intermediate alloy and preparation method thereof
  • Aluminum-tin-zirconium-molybdenum-chromium intermediate alloy and preparation method thereof

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preparation example Construction

[0032] The present invention provides the preparation method of the aluminum-tin-zirconium-molybdenum-chromium master alloy described in the above technical solution, comprising the following steps:

[0033] Mixing the first aluminum source and the molybdenum source to carry out an aluminothermic reaction to obtain an aluminum-molybdenum primary alloy;

[0034] The aluminum-molybdenum primary alloy, tin, zirconium, chromium and the second aluminum source are mixed and vacuum smelted to obtain an aluminum-tin-zirconium-molybdenum-chromium intermediate alloy.

[0035] In the present invention, the first aluminum source and the molybdenum source are mixed to carry out an aluminothermic reaction to obtain an aluminum-molybdenum primary alloy. Before mixing the first aluminum source and the molybdenum source, the present invention preferably dries the first aluminum source and the molybdenum source; the drying temperature is preferably 100-120°C, more preferably 105-115°C, and the ...

Embodiment 1

[0048] 1. Aluminothermic reaction smelting process

[0049] (1) Dry the aluminum powder and molybdenum trioxide at a drying temperature of 110°C and a drying time of 12h.

[0050] (2) According to the mass fraction of molybdenum trioxide in molybdenum trioxide and the aluminum consumption of molybdenum trioxide in the chemical reaction, calculate the quality of raw materials in the aluminothermic smelting process: aluminum powder 13.98kg, molybdenum trioxide 19.05kg.

[0051] (3) The aluminum powder and molybdenum trioxide were respectively charged into the mixer for 4min at a rate of 120r / min.

[0052] (4) Preheating the mixed aluminum powder and molybdenum trioxide to a furnace temperature of 43°C respectively, smelting by ignition, the reaction temperature is 1650°C to 1720°C, the reaction time is 29 to 35 seconds, and the furnace is released after 24 hours to obtain aluminum molybdenum. Grade 65 alloy.

[0053] 2. The ratio of vacuum melting process

[0054] After obtai...

Embodiment 2

[0072] 1. Aluminothermic reaction smelting process

[0073] (1) Dry the aluminum powder and molybdenum trioxide at a drying temperature of 110°C and a drying time of 12h.

[0074] (2) According to the mass fraction of molybdenum trioxide in molybdenum trioxide and the aluminum consumption of molybdenum trioxide in the chemical reaction, the quality of raw materials in the aluminothermic smelting process is calculated: aluminum powder 13.70kg, molybdenum trioxide 18.68kg.

[0075] (3) The aluminum powder and molybdenum trioxide were respectively charged into the mixer for 4min at a rate of 120r / min.

[0076] (4) Preheating the mixed aluminum powder and molybdenum trioxide to a furnace temperature of 43°C respectively, smelting by ignition, the reaction temperature is 1650°C to 1720°C, the reaction time is 29 to 35 seconds, and the furnace is released after 24 hours to obtain aluminum molybdenum. Grade 65 alloy.

[0077] 2. The ratio of vacuum melting process

[0078] After o...

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Abstract

The invention belongs to the technical field of metal materials, and particularly relates to an aluminum-tin-zirconium-molybdenum-chromium intermediate alloy and a preparation method thereof. The aluminum-tin-zirconium-molybdenum-chromium intermediate alloy comprises the following components of, by mass, 11.0-13.0% of Sn, 11.0-13.0% of Zr, 23.0-25.0% of Mo, 24.0-25.0% of Cr, and the balance Al andinevitable impurities. According to the aluminum-tin-zirconium-molybdenum-chromium intermediate alloy and the preparation method thereof, through control over the raw material components and the content, the aluminum-tin-zirconium-molybdenum-chromium intermediate alloy has small component segregation, when a titanium alloy is smelted, homogenization of the titanium alloy components is facilitated, the component segregation is prevented, the batching process during titanium alloy smelting is optimized, and accurate batching in the production process can be realized; and the preparation methodcan improve the uniformity and stability of the aluminum-tin-zirconium-molybdenum-chromium intermediate alloy components, the content of impurities such as O and N is reduced, the process is simple, control is easy, and the preparation method is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to an aluminum-tin-zirconium-molybdenum-chromium intermediate alloy and a preparation method thereof. Background technique [0002] Titanium and its alloys have excellent properties, such as high specific strength, corrosion resistance, high temperature resistance and good comprehensive process performance, etc., and have increasingly become attractive materials in the field of modern industrial science and technology. It has been widely used in many fields such as chemical industry, light industry, metallurgy, machinery and energy. [0003] Aluminum, tin, zirconium, molybdenum, and chromium are the main alloy components of titanium alloys, which are usually added to titanium alloys in the form of intermediate alloys. The main titanium alloy used is TC21. TC21 is one of the titanium alloys with good comprehensive mechanical properties of high-strength and high-toughness tit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C30/04C22C14/00C22C1/02
CPCC22C1/026C22C1/03C22C14/00C22C21/003C22C30/04
Inventor 王志军刘强孙鑫段善博刘志彬王东华纪海龙
Owner CHENGDE TIANDA VANADIUM IND
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