Preparation method of aluminum-titanium-boron wire grain refiner

Abstract

The invention relates to a preparation method of an aluminum-titanium-boron wire grain refiner. The preparation method is implemented by continuous cast rolling after smelting and specifically comprises the following steps: (1) melting: adding a pure aluminum ingot into a crucible furnace, melting into liquid aluminum, and heating; (2) alloying: sequentially adding potassium chloride, potassium fluotitanate and potassium fluotitanate into the liquid aluminum in the liquid aluminum heating process in the step (1), and heating while stirring until the reaction is complete, thereby obtaining liquid alloy aluminum; (3) stirring, degassing and deslagging: transferring the liquid alloy aluminum prepared in the step (2) into an industrial-frequency core-free holding furnace, and stirring and degassing; and (4) continuous cast rolling: transferring the deslagged liquid aluminum into a mold, carrying out rubber filtration, crystallizing the wheel die cavity, carrying out continuous rolling by a continuous rolling machine, and taking up to obtain the aluminum-titanium-boron wire. The preparation method avoids the phenomenon of blistering or loosening since the liquid aluminum is oxidized or absorbs gas, and enhances the elongation percentage of the aluminum-titanium-boron wire.

Description

technical field [0001] The invention relates to an aluminum-titanium-boron wire grain refiner, in particular to a preparation method of the aluminum-titanium-boron wire grain refiner. Background technique [0002] The development process of titanium-boron grain refiner has gone through three stages: titanium-boron additive, aluminum-titanium-boron intermediate alloy top, aluminum-titanium-boron wire, among which titanium-boron wire grain refiner is a block additive, titanium-boron The grain refiner is comparable to imported titanium-boron wire for its excellent refinement effect, and is far superior to aluminum-titanium master alloys. It is an economical and suitable grain refiner for most aluminum alloys. [0003] Due to its excellent refining effect, the titanium boron grain refiner makes the casting obtain fine equiaxed crystals, eliminates feather crystals and columnar crystals, provides a good internal structure for future processing, and can effectively overcome the ca...

AI Technical Summary

Problems solved by technology

This method can effectively separate the fluoride salt and other inclusions in the aluminum-titanium-boron alloy liquid, so that the impurities in the aluminum-titanium-boron alloy refiner are reduced and the cleanliness is greatly improved; The high-temperature anti-oxidation covering agent layer is added after degassing, and the gold liquid will be oxidized or sucked in gas in the previous step, which will cause pores or looseness in the material and reduce the elongation of the material