Al-Mg-Si series aluminum-alloy material with long-time natural aging stability, aluminum-alloy plate and manufacturing method thereof

A technology of aluminum alloy materials and natural aging, applied in the field of aluminum alloy materials, can solve the problems of increasing material cycle, achieve uniform size, excellent mechanical properties, improve strength and anti-dent performance

Active Publication Date: 2015-07-15
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This U.S. patent document only focuses on the alloy element composition and the primary aging treatment process, and the cooling rate of 0.5-5°C per hour will greatly increase the cycle of material preparation and processing

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  • Al-Mg-Si series aluminum-alloy material with long-time natural aging stability, aluminum-alloy plate and manufacturing method thereof
  • Al-Mg-Si series aluminum-alloy material with long-time natural aging stability, aluminum-alloy plate and manufacturing method thereof
  • Al-Mg-Si series aluminum-alloy material with long-time natural aging stability, aluminum-alloy plate and manufacturing method thereof

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[0069] The Al-Mg-Si series aluminum alloy material, aluminum alloy plate and its manufacturing method with long-term natural aging stability described in the present invention will be further explained and illustrated in conjunction with the accompanying drawings and specific examples. However, The explanations and illustrations do not constitute undue limitations on the technical solution of the present invention.

[0070] figure 1 The structure of a rolling mill facility for realizing the rolling, in-line solution treatment, and in-line aging pretreatment steps in the following manufacturing method is shown.

[0071] like figure 1 As shown, the rolling mill equipment is arranged in sequence along the traveling direction X of the slab: a left coiler 11, a right diverting roll 12, a rolling mill backup roll 13, a rolling mill working roll 14, a first online induction heating device 15a, and a first water cooling device 16a, the first air cooling device 17a, the second online...

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Abstract

The invention discloses an Al-Mg-Si series aluminum-alloy material with long-time natural aging stability. The Al-Mg-Si series aluminum-alloy material contains the chemical elements in percentage by mass: not lower than 0.3% and not higher than 0.6% of Mg, not lower than 0.8% and not higher than 1.2% of Si, not lower than 0.05% and not higher than 0.15% of Mn, higher than 0 and not higher than 0.03% of Cu, higher than 0 and not higher than 0.12% of Fe, higher than 0 and not higher than 0.05% of Ti, either not lower than 0.05% and not higher than 0.15% of Ca or not lower than 0.05% and not higher than 0.15% of Sr and the balance of Al and other unavoidable impurities. The invention further discloses an aluminum-alloy plate manufactured from the aluminum-alloy material. The invention further discloses a manufacturing method of the aluminum-alloy plate, wherein the method comprises the steps of smelting, casting, carrying out homogenizing heat treatment, carrying out face milling, rolling, carrying out online solid solution treatment and carrying out online aging pretreatment. The aluminum-alloy material and the aluminum-alloy plate, disclosed by the invention, are high in strength and good in natural aging stability.

Description

technical field [0001] The invention relates to an aluminum alloy material, in particular to an Al-Mg-Si series aluminum alloy material. The present invention also relates to a manufacturing method of the Al-Mg-Si series aluminum alloy material. Background technique [0002] The lightweight of automotive materials is the focus of current car manufacturers. The use of aluminum alloy sheets for automotive structural parts is increasing, and the optional materials are 2000 series, 5000 series and 7000 series alloy materials. However, the corrosion resistance of 2000-series alloy materials containing Cu is poor, the 5000-series alloy materials are easy to soften during baking treatment, and the elongation of 7000-series alloy materials is insufficient, which will cause difficulties in material processing properties. The 6000-series Al-Mg-Si alloy material that can be strengthened by heat treatment is increasingly widely used because of its good formability, corrosion resistanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22F1/043
Inventor 徐世伟蒋浩民唐伟能张丕军
Owner BAOSHAN IRON & STEEL CO LTD
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