Intermediate Al-Fe alloy and method of manufacturing the same

Abstract

The invention discloses an aluminum-iron (AlFe20) master alloy which is composed of mother batches and accessories. The mother batches include primary aluminum liquid and high-purity iron; the accessories include a refining agent and a covering agent. The invention is characterized in that the alloy composition is as follows according to the weight percentage: 99.98-99.9% of iron in the high-purity iron, 0.09-0.1% of silicon in the primary aluminum liquid, 0.09-0.12% of iron and 99.97-99.99% of aluminum. The input amounts of the alloy and the primary aluminum liquid (calculated by 10T furnace) are 8-8.5T of the primary aluminum liquid and 2.16-2.5T of the high-purity iron as well as right amount of the refining agent and covering agent. The preparation method comprises: the method of directly using the primary aluminum liquid is adopted for production, the covering agent is first added onto the surface of the primary aluminum liquid and is heated up to 850-880 DEG C, and then the refining agent is added for refining, slag-off is carried out after refining; the high-purity iron is added and an electromagnetic stirrer is used for stirring; the aluminum liquid is heated up to 1200-1250 DEG C for sampling analysis after adding the covering agent; after test, the alloy is cast on the condition that the sample is qualified according to the analysis result, or fed in accordance with the requirement of the national standard GB8735-88; the alloy is cast after passing the test. The master alloy has the advantages of lowering the investment cost and the processing cost, shortening the production period, simplifying the manufacturing technique and achieving the purpose of energy-saving and environment protection.

Description

technical field [0001] The present invention relates to a kind of aluminum iron (AlFe 20 ) master alloy, especially an aluminum-iron (AlFe 20 ) master alloy and a preparation method thereof, belonging to the technical field of nonferrous metals. Background technique [0002] At present, my country's AlFe 20 The master alloy is completed by melting and remelting aluminum ingots. Due to the complicated process and long production and processing cycle, the processing cost is relatively high. In order to reduce energy consumption, reduce investment and shorten production cycle. We used the primary aluminum liquid to AlFe 20 Master alloys were tested for production. After more than half a year of hard work, good results have been achieved. An aluminum-iron (AlFe 20 ) master alloy came into being. Contents of the invention [0003] The purpose of the invention is to overcome the deficiencies of the prior art, to provide a kind of aluminum iron (AlFe 20 ) master alloy and...

AI Technical Summary

Problems solved by technology

[0002] At present, my country's AlFe 20 The master alloy is completed by melting and remelting aluminum ingots. Due to the complex process and long production and processing cycle, the processing cost is relatively high.