A high-throughput continuous casting and rolling aluminum-magnesium-manganese alloy plate for ships and its production process

Abstract

The invention discloses a high-throughput continuous casting and rolling aluminum-magnesium-manganese alloy plate for ships and a production process thereof. The chemical composition of the aluminum-magnesium-manganese alloy is calculated by mass percentage: Mg: 0.80-2.80%, Mn: 0.00-1.40 %, Zr: 0.10‑0.50%, Cr: 0.15‑0.35%, Sr: 0.00‑0.10%, Er: 0.00‑0.60%, Si: 0.10‑0.40%, Cu: 0.01‑0.10%, Ti: 0.01‑0.05% , Fe: 0.00‑0.40%, the balance is Al. The production process mainly includes smelting and melt treatment, continuous casting, continuous rolling and cold rolling process. This invention solves the problem of high-throughput continuous casting and rolling to produce aluminum for ships Magnesium-manganese sheets have problems such as easy segregation, low strength and toughness, and poor formability.

Description

Technical field: [0001] The invention belongs to the technical field of aluminum alloy plate processing, and in particular relates to a high-throughput continuous casting and rolling aluminum-magnesium-manganese alloy plate for ships and a production process thereof. Background technique: [0002] Aluminum-magnesium-manganese-aluminum alloy has the characteristics of low density, light weight, high strength, good electrical and thermal conductivity, and excellent corrosion resistance. Street lamp brackets and rivets, hardware products, etc. have a wide range of applications. With the continuous and rapid development of my country's marine industry, the lightweight requirements of the shipbuilding industry for aluminum-magnesium-manganese alloy plates are getting higher and higher, and the demand is increasing. At present, the main process for producing aluminum-magnesium-manganese alloys is billet hot rolling process, which has a long production process, complicated process...

AI Technical Summary

Problems solved by technology

However, due to the large solidification temperature range in the solidification process of most aluminum-magnesium-manganese-aluminum alloys, the fluidity of the alloys in the high-throughput continuous casting and rolling production process will become poor, and defects such as structural segregation, porosity, and shrinkage cavities will easily occur. Therefore, it is urgent to develop a production process of high-throughput continuous casting and rolling customized aluminum-magnesium-manganese alloy sheets to meet the requirements of lightweight ships for the strength, toughness and formability of aluminum alloy sheets.

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