Dynamic regulation and control method for aluminum melt refiner

By precisely controlling the dynamic regulation of aluminum melt refiner, the problem of unstable grain refinement effect during aluminum alloy casting and rolling was solved, achieving stable control of grain size and improving finished product quality. In particular, it avoided grain inhomogeneity and orange peel phenomenon in the explosion-proof cover material of power battery.

CN121294879APending Publication Date: 2026-01-09JIANGSU DINGSHENG NEW MATERIAL JOINT STOCK CO LTD +1
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Patent Information

Application Number
CN202511371305.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-24
Publication Date
2026-01-09

AI Technical Summary

Technical Problem

In existing technologies, the grain refinement effect during the aluminum alloy casting and rolling process is unstable, resulting in coarse grain defects. This is especially true in the materials for explosion-proof covers of power batteries, where grain inhomogeneity and orange peel-like phenomena occur. Furthermore, the rate of titanium addition lacks systematic research, leading to unstable grain refinement effects.

Method used

By precisely controlling the dynamic regulation of aluminum melt refiners, including processes such as preheating, melting, refining, degassing, and filtration, and combining resistance heating, electromagnetic stirring, graphite rotor degassing, ceramic foam filtration, and continuous addition of titanium wire, the casting and rolling parameters are optimized to ensure uniform distribution and effective action of titanium elements.

Benefits of technology

It achieves stable control of grain size, avoids coarse grain defects, improves finished product quality and grain structure uniformity, and ensures the stability of the casting and rolling process and fine and uniform grain structure.

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Abstract

The invention provides an aluminum melt refiner dynamic regulation and control method which comprises the following steps: preparing a 1060 aluminum alloy raw material, and preheating to 220 DEG C; the preparation method comprises the following steps: adding raw materials into a smelting furnace, heating to 740 DEG C for melting, and adding an Al-5Ti-1B intermediate alloy; adding a refining agent, refining for 35 minutes, and standing for 20 minutes; the melt enters a degassing box, in the degassing box, a graphite rotor is used for rotating at the rotating speed of 350 rpm, and high-purity argon is introduced for degassing for 18 minutes; the melt is filtered through a ceramic foam filter and enters a front box; the temperature in the front box is adjusted to 690 DEG C, and a titanium wire adding device continuously adds titanium wires at the speed of 0.8 m / min; the melt enters a casting and rolling machine, casting and rolling are conducted at the speed of 1.0 m / min, and the liquid level height is controlled to be 60 mm; graphite-based paint is sprayed on the surface of the casting roller at the speed of 0.8 m / min; and performing macrostructure inspection on the cast-rolled plate, and evaluating the grain refinement effect. The method has the effects of stable grain refinement effect and high finished product quality.
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