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Method for preparing aluminium-titanium-carbon master alloy

A technology of master alloy and binary master alloy, applied in the field of metal materials, can solve the problems of polluted aluminum alloy, polluted environment, complicated process, etc., and achieve the effects of low cost, simple preparation process and high absorption rate

Active Publication Date: 2009-03-11
SHANDONG AL&MG MELT TECHNOLOGY COMPANY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The characteristic of this process is that the aluminum-titanium alloy is prepared first, and then remelted, and an activator needs to be added. The process is also relatively complicated and the cost is high.
Literature (Journal of Alloys and Compounds, 2005, 396:143-150) reported that K 2 TiF 6 The method of producing aluminum-titanium-carbon master alloy with graphite powder, the shortcoming of this method is to release a large amount of KF and AlF in the production process 3 And other toxic gases, pollute the environment, and the master alloy often contains salt inclusions, etc., thus polluting the aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) First prepare the raw materials according to the following mass percentages: 8.00% aluminum-carbon master alloy and 50.00% aluminum-titanium master alloy, the remainder being pure aluminum, wherein the carbon content (wt%) in the aluminum-carbon master alloy used is 5.00, and the content (wt%) of titanium in the aluminum-titanium master alloy used is 10.00;

[0019] (2) Reserving 15% of the aluminum-titanium master alloy as a cold material, melting the rest of the aluminum-titanium master alloy together with pure aluminum in an induction furnace and raising the temperature to 1050°C;

[0020] (3) Add the prepared aluminum-carbon master alloy to the melt, keep warm and mechanically stir for 15 minutes, then add the reserved aluminum-titanium master alloy to rapidly cool the melt to 850°C, and directly cast into ingots or prepare into wire.

[0021] The composition of the aluminum-titanium-carbon master alloy is:

[0022] Component Content (wt%)

[0023] Aluminum (...

Embodiment 2

[0027] (1) First prepare the raw materials according to the following mass percentages: 25.00% aluminum-carbon master alloy and 50.00% aluminum-titanium master alloy, the remainder being pure aluminum, wherein the carbon content (wt%) in the aluminum-carbon master alloy used is 20.00, and the content (wt%) of titanium in the aluminum-titanium master alloy used is 30.00;

[0028] (2) Reserving 10% of the aluminum-titanium master alloy as a cold material, melting the rest of the aluminum-titanium master alloy and pure aluminum in an induction furnace and raising the temperature to 1300°C;

[0029] (3) Add the prepared aluminum-carbon master alloy to the melt, keep warm and mechanically stir for 20 minutes, then add the reserved aluminum-titanium master alloy to rapidly cool the melt to 900°C, and directly cast into ingots or prepare into wire.

[0030] The composition of the aluminum-titanium-carbon master alloy is:

[0031] Component Content (wt%)

[0032] Aluminum (Al) 80.0...

Embodiment 3

[0036] (1) First prepare raw materials according to the following mass percentages: 20.00% aluminum-carbon master alloy and 80.00% aluminum-titanium master alloy, wherein the content (wt%) of carbon in the aluminum-carbon master alloy used is 10.00, and the aluminum used - the content (wt%) of titanium in the titanium master alloy is 10.00;

[0037] (2) 10% of the aluminum-titanium master alloy is reserved as a cold material, and the rest of the aluminum-titanium master alloy is melted and heated to 1150° C. in an induction furnace;

[0038] (3) Add the prepared aluminum-carbon master alloy to the melt, keep warm and mechanically stir for 20 minutes, then add the reserved aluminum-titanium master alloy to cool the melt down to 900°C, and directly cast into ingots or prepare wire rods .

[0039] The composition of the aluminum-titanium-carbon master alloy is:

[0040] Component Content (wt%)

[0041] Aluminum (Al) 90.00

[0042] Titanium (Ti) 8.00

[0043] Carbon (C) 2.00

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PUM

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Abstract

The present invention belonging to the metallic material field, and relates to a process of AL-Ti-Carbon master alloy for thinning the AL and the AL alloy crystal grain. The method uses AL-Carbon master alloy and AL-Ti master alloy as the sources of element Carbon and Ti. Pure aluminum and AL-Ti master alloy are first melted and heated to 900-1300 degrees Celsius system in an induction furnace, and then the aluminum-carbon binary master alloy is added. After preserving the heat and being stirred mechanically for 20-30 minutes, the AL-Ti master alloy clod metal is added to reduce the temperature and cast into ingots or made into wires directly. The method is simple in technics, low in cost, and the thinning effect of the prepared AL-Ti-Carbon master alloy is of a high efficiency and long-lasting action.

Description

technical field [0001] The invention belongs to the field of metal materials, and in particular relates to a preparation method of an aluminum-titanium-carbon intermediate alloy used for refining aluminum and aluminum alloy grains. Background technique [0002] Aluminum-titanium-carbon master alloy is a ternary master alloy refining agent proposed earlier than aluminum-titanium-boron master alloy, and its research has always been an important topic of great concern to scholars at home and abroad. However, due to the extremely poor wettability between carbon and aluminum and the difficulty in alloying, the preparation of aluminum-titanium-carbon has long been a technical problem. In the 1940s, British scholar Cibula tried various methods to add carbon to the aluminum-titanium solution, hoping to obtain an aluminum-titanium-carbon master alloy containing a large number of TiC particles, but all failed. Until 1985, Banerji and Reif obtained a breakthrough in the preparation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/03C22C21/00
Inventor 刘相法丁海民
Owner SHANDONG AL&MG MELT TECHNOLOGY COMPANY LIMITED