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A V-Al-Sn-Cr intermediate alloy and process for preparing same

A master alloy, vanadium-aluminum technology, applied in the field of vanadium-aluminum-tin-chromium master alloy and its preparation, can solve the problems of high cost, narrow adaptability, and inability to meet diversification, and achieve low cost, low production cost, easy storage and transport effect

Inactive Publication Date: 2005-06-22
张忠士
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  • Abstract
  • 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 V-Al-Sn-Cr intermediate alloy and process for preparing same

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Experimental program
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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: 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: reduce heat with batching slag (slag produced by vanadium-aluminum-tin-chromium alloy smelting), the amount of slag added is 10-15% of the total weight of raw materials,

[0020] V 2 o 5 CrO 3 SnO 2 Al CaF 2 Ingredients slag

[0021] 1kg 0.24kg 0.136kg 0.758kg 0.28kg 0.30kg

[0022] 3. Mixing: put the mate...

Embodiment 2～5

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

[0035] Table 1. Vanadium-aluminum-tin-chromium alloy reaction system

[0036]

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Abstract

The invention relates to the preparation of titanium alloy, more specifically an V-Al-Sn-Cr intermediate alloy for titanium alloy preparation and process for preparing the same, wherein the constituents (by weight percent) of the alloy include, Al 5.5-13.5%, Sn 11-14%, Cr 11-14%, and balancing V. The preparing process comprises, employing furnace outside ignition smelting method, operating according to routine procedures, calculated based on 1kg of V2O5, the charged mixture includes, Al 0.51-0.758kg, SnO2 0.136-0.148 kg, CrO3 0.23-0.275kg, CaF2 0.2-0.3kg, furnace slag 0.25-0.35kg (produced during vanadium-chrome-aluminum alloy smelting), the raw material shoving temperature being 30-60 deg. C. The advantages of the invention include facilitated preparation of titanium alloy, low making cost, homogeneous alloying, good oxidation resistance, easy storing, transport and fragmenting.

Description

technical field [0001] The invention relates to the preparation of titanium alloys, in particular to a vanadium-aluminum-tin-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 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 vanadium-based master alloy is lower than the highest melting point of each metal element; The melting point of AlVSnCr alloy is 1591°C, and the melting point of V is 1890°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 inconsistent melting points of metal elements. An existing aluminum-titanium rare earth compound master allo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C27/02
Inventor 张忠士郭淑君田福礼
Owner 张忠士
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