Method for preparing aluminum-titanium-carbon intermediate alloy

Abstract

One Al-Ti-C intermediate alloy preparation method, involves a kind to use in the aluminum alloy production crystal grain thin Al-Ti-C intermediate alloy production method. Its characteristic lies in with the calcium carbide does carbon source, the production craft completely dissolves after the aluminum, melts the body fever to join the electricity stone powder hydrofluotitanic acid armor the mixture, elevates temperature to 950deg.C~~1000deg.C, guarantees the wet 10~~30 minute, after melt body surface liquid state dregs casting.The invention characteristic is the raw material unites is easy, alloy production craft simple, production cost low, produces the alloy thin medicinal preparation thin crystal grain with this craft is incubation period short, specially suits outside the stove is continuously thin.

Description

technical field

[0001] A method for preparing an Al-Ti-C master alloy relates to a method for producing a grain refiner Al-Ti-C master alloy used in the production of aluminum alloys. Background technique

[0002] Since the 1960s, the Al-Ti-B master alloy has been a grain refiner commonly used in the aluminum industry, but through long-term application, it is found that there is TiB in the Al-Ti-B master alloy. 2 The defects of particle aggregation lead to a series of quality problems of subsequent processing products such as pinholes and fractures of foils and scratches of rolling plates. In addition, in alloys containing Zr or Cr, Zr or Cr will make TiB 2 poisoning, resulting in an uneven grain structure. Compared with Al-Ti-B, Al-Ti-C alloy, as a refiner, has an "immune" effect on alloys containing Zr, Cr and V elements, and can effectively refine their grains; in Al -In the Ti-C master alloy, TiC particles are not easy to aggregate and precipitate.

[0003] Regarding...