A Mo-V-Cr intermediate alloy and process for preparing same

An intermediate alloy, molybdenum-vanadium technology, applied in the field of molybdenum-vanadium-chromium master alloy and its preparation, can solve the problems of high cost, narrow adaptability, inability to meet diversification and the like, achieves low cost, low production cost, easy storage and transportation Effect

Inactive Publication Date: 2006-11-01
忠世高新材料股份有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

An existing aluminum-titanium rare earth compound master alloy smelted with titanium alloy (patent application number 94112628.5) has good oxidation resistance, but its cost is high and its adaptability is narrow (used for pure rare earth type titanium alloy smelting), which cannot meet the diversified requirements of modern titanium alloy production

Method used

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  • A Mo-V-Cr intermediate alloy and process for preparing same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The method of smelting by ignition outside the furnace is carried out according to the conventional steps, the raw materials are dried, the furnace is built, the ingredients are prepared according to the weight percentage, the materials are evenly mixed, the furnace is loaded, smelted, cooled, the furnace is started, weighing, finishing, crushing, magnetic Selection, sampling analysis, packaging.

[0017] Concrete preparation process is as follows:

[0018] 1. Drying of raw materials: Dry raw materials, masonry slag, and batching slag in a drying room at a temperature of 75°C (75±5°C) for no less than 24 hours (24 to 72 hours);

[0019] 2. Weighing raw materials: Calcium fluoride is used as a slagging agent during batching (the addition is 1.5-13.5% of the total amount of raw materials).

[0020] V 2 o 5 MoO 2 CrO 3 Al CaF 2

[0021] 1kg 0.339kg 0.9kg 1.07kg 0.1kg

[0022] 3. Mixing: put the material into the V-shaped mixer, mix evenly, and the nu...

Embodiment 2～4

[0034] Embodiment 2~4. Operate by the method of embodiment 1, see table 1 with embodiment 1 difference.

[0035] Table 1. Molybdenum vanadium chromium alloy reaction system

[0036]

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Abstract

The present invention relates to the preparation of titanium alloys, in particular to a molybdenum vanadium chromium master alloy used for the preparation of titanium alloys and a preparation method thereof. The alloy composition in terms of weight percent is: Mo 18-26%, Cr 27-35%, Al 0% to 10%, V is the balance; the preparation process is as follows: adopt the ignition smelting method outside the furnace, operate according to the conventional steps, and the weight composition of the ingredients is expressed as V 2 o 5 For 1kg, MoO 2 0.26~0.339kg, CrO 3 0.9~1.16kg, Al 0.75~1.50kg, CaF 2 0.05~0.12kg; the furnace temperature of raw materials is 30~60℃, the reaction is stable, and the alloy is formed well. The invention has the advantages of convenient preparation of titanium alloy, low cost and uniform alloying; the invention has good oxidation resistance, is easy to store and transport, and is easy to break.

Description

technical field [0001] The invention relates to the preparation of titanium alloys, in particular to a molybdenum vanadium chromium (vanadium-based) master alloy used for the preparation of titanium alloys and a preparation method thereof. Background technique [0002] With the continuous development of titanium alloys, it is increasingly necessary to directly add intermediate alloys to titanium for smelting, avoiding the tediousness of simply adding metal elements separately, and the alloy melting point is lower than the highest melting point of each metal element: such as MoVCr alloy melting point The melting point of Mo is 1980℃, while the melting point of Mo is 2610℃, which makes the preparation and smelting process of titanium alloy stable, and avoids the phenomenon that the melting current applied fluctuates and is not easy to control due to the inconsistency of the melting point of the metal element. An existing aluminum-titanium rare earth compound master alloy smelt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C27/02
Inventor 张忠士郭淑君田福礼
Owner 忠世高新材料股份有限公司
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