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An Al-Mo-NG-Si intermediate alloy and process for preparing same

A master alloy, aluminum-molybdenum technology, applied in the field of aluminum-molybdenum-niobium-silicon master alloy and its preparation, can solve the problems of unsatisfactory diversification, high cost, narrow adaptability, etc., and achieve easy storage and transportation, low cost, and production cost low effect

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

AI Technical Summary

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Using the ignition smelting method outside the furnace: 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: drying raw materials, masonry slag, and batching slag in a drying room at a temperature of 75°C (can be 75±5°C) for 24 hours (can be 24 to 72 hours);

[0019] 2. Weigh raw materials:

[0020] MoO 3 MoO 2 Nb 2 o 5 AlSiCaF 2

[0021] 1kg 1kg 0.4kg 0.95kg 0.012kg 0.415kg

[0022] 3. Mixing: put the material into the V-shaped mixer, mix evenly, and the number of times is 6 times;

[0023] 4. Cooling: Cool the mixed raw materials to 45°C (can be 35-45°C);

[0024] 5. Furnace loading: put the ...

Embodiment 2～5

[0034] Embodiment 2~5. Operate according to the method of embodiment 1, see table 1 with embodiment 1 difference.

[0035] production process

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Abstract

The present invention relates to the preparation of titanium alloys, in particular to an aluminum-molybdenum-niobium-silicon master alloy used for the preparation of titanium alloys and a preparation method thereof. The alloy composition by weight percentage is: Al 8-12%, Nb 14-16%, Si 0.8 ~ 1.0%, Mo is the balance; the preparation process is: adopt the ignition smelting method outside the furnace, operate according to the conventional steps, the raw material drying temperature is 70 ~ 80 ℃, and the drying time is not less than 24 hours; the weight of ingredients is composed of 1kg MoO 3 Count: Nb 2 o 5 0.373~0.43kg, Al 0.763~1.14kg, Si0.010~0.013kg, MoO 2 1kg, CaF 2 0.05~0.415kg; 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 an aluminum-molybdenum-niobium-silicon (molybdenum-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 more and more necessary for the master alloy to be directly added to titanium for smelting, which avoids the cumbersomeness of simply adding metal elements separately, and the melting point of the molybdenum-based master alloy is lower than the highest melting point of each metal element; The melting point of AlMoNbSi alloy is 2115°C, while the melting point of Mo is 2610°C, 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 rar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C27/04
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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