Refiner of aluminium and aluminium alloy with high efficiency and low cost and preparation method thereof

Abstract

The invention provides a refiner of aluminium and aluminium alloy with high efficiency and low cost and a preparation method thereof, belonging to the technical field of a refiner of aluminium and aluminium alloy and solving the problems that in the prior art, the refiner of the aluminium and aluminium alloy has higher requirements for technique equipment, trivial and complex technique, excessive cost, poor product performance and the like. The refiner of aluminium and aluminium alloy with high efficiency and low cost is aluminium-titanium-carbon-rare earth master alloy; the master alloy contains 3% to 10wt% of Ti, 0.02 to 1wt% of C, 0.02 to 1wt% of RE, aluminium and impurity elements; and the preparation method comprises the following steps of: adopting the rare earth compound as a reacting promoter, casting after smelting reaction and obtaining the refiner. The preparation method has low cost, high efficiency and easy industrialization; the raw material has low price and wide source; the preparation can be carried out in a well-type resistance furnace, does not need extra stirring equipment, and has simple technique; and the refiner has the advantages of capability of being used with a modifier simultaneously, stable organization, refining effect and the like.

Description

technical field [0001] The invention belongs to the technical field of aluminum and aluminum alloy refiners, and more specifically relates to an efficient and low-cost aluminum and aluminum alloy refiner and a preparation method thereof. Background technique [0002] Grain refinement is one of the important means to improve the strength and plastic toughness of materials, and it is an important way to improve the quality of aluminum materials. It is beneficial to the uniformity of the microstructure and chemical composition of aluminum and aluminum alloys and the improvement of mechanical properties, processing properties and surface quality, especially helps to eliminate cracks, segregation and feather grain defects in vertical continuous casting and horizontal continuous casting aluminum ingots, It is an important way to reduce the scrap rate of aluminum products and improve its quality and productivity. [0003] Al-Ti-C is a new type of refining agent for aluminum and al...

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Problems solved by technology

[0022] The purpose of the present invention is to provide a high-efficiency and low-cost aluminum and aluminum alloy refiner and its preparation method, further improve the raw materials and preparation methods of the existing AlTiC refiner, and solve the problem of aluminum and aluminum alloy in the prior art. Alloy refiner process equipment requires high requirements, cumbersome and complicated process, high cost, poor product performance and other problems; the method of the present invention is low-cost and efficient, easy to industrialize, and has excellent product performance

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