Cerium iron alloy and preparation and usage methods thereof

Abstract

A cerium iron alloy and preparation and usage methods thereof belong to the technology field of rare earth iron alloy. The component ranges of the alloy are: 0.1 to 15 wt% of cerium, and the rest is Fe and inevitable impurities, whose total amount is smaller than 1.0 wt%. The preparation technology adopts vacuum induction furnace for melting, takes cerium with purity larger than 99.0% and pure iron with purity larger than 99.0% as the raw materials, and then the raw materials are blended according to a formula that 0.1 to 15 wt% of cerium, and the rest is Fe. Then the mixture is melted in the vacuum induction furnace, the pressure of the vacuum room is controlled under 100 Pa, and the melting temperature is controlled in a range of 1550 to 1600. After the alloy is all melted, vacuum state is maintained for 4 to 6 minutes, then the vacuum is released. Finally ingot castings with qualified size are casted at the atmosphere of protection argon gas. The preparation method has the advantages that the alloy has a high density, and is not easy to be oxidized, pulverized, or damped; the yield of rare earth cerium is high during the steel-making process and the content of the rare earth cerium is stable.

Description

technical field [0001] The invention belongs to the technical field of rare earth iron alloys, and in particular provides a ferrocerium alloy and its preparation and use methods, which are suitable for iron and steel metallurgy. Background technique [0002] In the production process of high-quality steel, the application of rare earth in steel has always been an important research content of metallurgists. Rare earths not only have obvious effects on the removal of impurity elements (oxygen, sulfur, etc.) . But despite this, the addition method of rare earth and the stable control of rare earth content have always been the objects of research and attention of the majority of metallurgists. [0003] Rare earth addition methods can generally be divided into the following categories: (1) pure rare earth addition. Rare earth metals are prepared into rods, cored wires, etc., and alloyed by direct pressing into molten steel and feeding with a wire feeder. However, the disadva...

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Problems solved by technology

[0004] The object of the present invention is to provide a ferrocerium alloy and its preparation and use method, which solves the problem that rare earth ferroalloys usually contain relatively high content of alloying elements such as silicon, aluminum, manganese, etc., which lead to a great limitation in the range of use of these alloys question