Ultrahigh alloying aluminum alloy cast ingot and preparation method thereof

CN119346814APending Publication Date: 2025-01-24CHINALCO MATERIALS APPL RES INST CO LTD
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Patent Information

Application Number
CN202411495208.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-24
Publication Date
2025-01-24

AI Technical Summary

Technical Problem

Existing technologies for preparing ultra-high alloy aluminum alloy ingots suffer from numerous porosity defects, especially in large-sized ingots. Porosity or porosity defects affect the fatigue performance, fracture toughness, and tensile strength of the material. Furthermore, existing external field interference methods increase costs and introduce uncontrollable factors.

Method used

By controlling the reasonable matching of casting speed and cooling water flow, adopting a zoned casting process, and combining online degassing, slag removal and refining treatment, ultra-high alloy aluminum alloy ingots are prepared. Specifically, this includes refining treatment, dual rotor degassing, dual-stage plate filtration and segmented casting, and controlling the porosity and size of the ingots.

Benefits of technology

It effectively improves the porosity defects of ultra-high alloy aluminum alloy ingots, enhances the structural stability and forming rate of ingots, reduces the probability of cracking, and produces large-sized ingots without increasing additional costs.

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Abstract

The invention provides an ultrahigh alloying aluminum alloy cast ingot and a preparation method thereof. The preparation method comprises the steps that raw materials including metal are sequentially subjected to smelting, refining treatment, online degassing, deslagging treatment and casting according to the proportion, and an ultrahigh alloying aluminum alloy cast ingot is obtained; the length of the ultrahigh alloying aluminum alloy cast ingot is L, and when L is equal to 0 mm, the casting speed does not exceed 15 mm / min, and the flow of cooling water in casting does not exceed 15 m < 3 > / h; when 0 lt; llt; the casting speed and the flow of cooling water are gradually increased along with the increase of the length of the ultrahigh alloying aluminum alloy cast ingot when the length of the ultrahigh alloying aluminum alloy cast ingot is 700mm, the casting speed does not exceed 40mm / min, and the flow of the cooling water does not exceed 25m < 3 > / h; and when L is larger than or equal to 700 mm, the casting speed does not exceed 50 mm / min, and the flow of cooling water does not exceed 30 m < 3 > / h. The ultrahigh alloying aluminum alloy cast ingot prepared through the method has few looseness defects.
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Citation Information

Patent Citations

  • Process for controlling center porosity of large and round continuous casting billet

    CN103567410A

  • Method for improving metallurgical quality of large-specification 2000 series aluminum alloy cast ingot

    CN112974747A

  • 7-series aluminum alloy cast ingot for large-specification die forging and control method for hydrogen content of 7-series aluminum alloy cast ingot

    CN113969368A

  • Centrifugal casting process for improving looseness

    CN117600433A

  • Casting blank ultrasonic wave resonance device

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