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Vanadium aluminum iron intermediate alloy and preparation method thereof

An intermediate alloy, vanadium-aluminum technology, applied in the field of intermediate alloy and its preparation, can solve the problems of high impurity content and poor uniformity of the alloy, and achieve the effects of good uniformity, reduced manufacturing cost and uniform composition

Active Publication Date: 2013-09-11
上海康臣特种金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current master alloy is usually smelted by one-step method. The smelted alloy not only has high impurity content, but also has poor uniformity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The weight of ingredients is in Kg, V 2 o 5 100Kg, Al62.2Kg, CaF 2 27.9Kg, slag 12.4Kg, Fe7.44Kg weigh each raw material; in step 3) add additional 2.61KgAl and 1KgFe, and the alloy composition obtained through two-step smelting is as follows:

[0028] V is 69.8%, Fe is 11.6%, Si is 0.05%, O is 0.07%, C is 0.1%, B is 0.007%, N is 0.02%, P is 0.03%, Cr is 0.04%, Cu is 0.08%, Mo is 0.05%; the balance is Al; wherein, the percentages here are weight percentages.

[0029] The first step of the two-step smelting method in this embodiment is smelting outside the furnace.

Embodiment 2

[0031] The weight of ingredients is in Kg, V 2 o 5 100Kg, Al78.5Kg, CaF 2 18Kg, 7.2Kg of slag, and Fe8.45Kg were weighed for each raw material; in step 3), an additional 4KgAl was added, and the composition of the alloy obtained after two-step smelting was as follows:

[0032] V is 56.21%, Fe is 9.59%, Si is 0.07%, O is 0.08%, C is 0.09%, B is 0.007%, N is 0.002%, P is 0.02%, Cr is 0.02%, Cu is 0.08%, Mo is 0.06%; the balance is Al; wherein, the percentages here are weight percentages.

[0033] The first step of the two-step smelting method in this embodiment is vacuum smelting in a furnace.

Embodiment 3

[0035] The weight of ingredients is in Kg, V 2 o 5 100Kg, Al70.17Kg, CaF 2 20.84Kg, slag 9.18Kg, and Fe6.45Kg were weighed for each raw material; in step 3), additional 3.35KgAl and 2KgFe were added, and the alloy composition obtained through two-step smelting was as follows:

[0036] V is 62.12%, Fe is 10.85%, Si is 0.08%, O is 0.08%, C is 0.07%, B is 0.007%, N is 0.002%, P is 0.03%, Cr is 0.03%, Cu is 0.08%, Mo is 0.06%; the balance is Al; wherein, the percentages here are weight percentages.

[0037] The first step of the two-step smelting method in this embodiment is vacuum smelting in a furnace.

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Abstract

The invention discloses vanadium aluminum iron intermediate alloy, which comprises the following ingredients by weight percent: 55 to 75 percent of vanadium (V), 5 to 30 percent of iron (F), 0.35 or less percent of silicon (Si), 0.2 or less percent of oxide (O), 0.05 or less percent of carbon (C), 0.01 percent of boron (B), 0.05 or less percent of nitrogen (N), 0.05 or less percent of phosphorus (P), 0.1 or less percent of chromium (Cr), 0.2 or less percent of copper, 0.1 or less percent of molybdenum (Mo), and rest percentage of aluminum (Al). The invention also provides a preparation method of the vanadium aluminum iron intermediate alloy. A two-step method is used for smelting. Compared with the existing external smelting method, the acquired ingredients are more uniform; and particularly Al and Fe are added in two steps in the two-step way, so the uniformity of the ingredients is better than that of the ingredients acquired in a one-step way; and in addition, the invention also adopts a unique smelting method that a carbon crucible with a layer of yttrium oxide being coated inside a vacuum furnace as a smelting vessel, so that compared with original method that a water-cooling copper crucible is adopted, the manufacturing cost is greatly reduced, and the introduction of impurities can be well controlled.

Description

technical field [0001] The invention relates to a master alloy and a preparation method thereof, in particular to a vanadium-aluminum-iron master alloy for smelting and a preparation method thereof. Background technique [0002] With the continuous development of titanium alloys, it has become more and more common to use intermediate alloys to add to the smelting of titanium alloys. For the added master alloy, it is required to have no segregation, no metal inclusions, and the impurity content should be as low as possible. [0003] The current master alloy is smelted by one-step method, and the smelted alloy not only has high impurity content, but also has poor uniformity. Contents of the invention [0004] The object of the present invention is to provide a vanadium-aluminum-iron master alloy and a preparation method thereof. The impurity content of the vanadium-aluminum-iron-vanadium-aluminum master alloy can meet the requirements of titanium alloy smelting and addition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/02C22C1/02
Inventor 陆树兴
Owner 上海康臣特种金属材料有限公司