A kind of manufacturing method of aluminum alloy strip for automobile decoration

A technology for aluminum alloy strips and automobile decoration, which is applied in the field of aluminum alloy strip manufacturing, can solve problems such as high surface roughness and punching cracks, achieve stable product quality, solve punching cracks, and ensure surface brightness.

Active Publication Date: 2019-06-18
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of punching cracks and high surface roughness in the aluminum alloy strip for automobile decoration prepared by the existing method, and to provide a manufacturing method for the aluminum alloy strip for automobile decoration

Method used

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  • A kind of manufacturing method of aluminum alloy strip for automobile decoration
  • A kind of manufacturing method of aluminum alloy strip for automobile decoration
  • A kind of manufacturing method of aluminum alloy strip for automobile decoration

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specific Embodiment approach 1

[0014] Specific Embodiment 1: This embodiment is a method for manufacturing an aluminum alloy strip for automobile decoration, which is specifically completed according to the following steps:

[0015] 1. Preparation of raw materials: According to the mass fraction of Mn in the aluminum alloy strip for automobile decoration is 0.03% to 0.06%, the mass fraction of Mg is 0.8% to 1.1%, and the balance is Al to prepare the smelting raw materials, and ensure that the automobile decoration The mass fraction of Si in the aluminum alloy strip is <0.6%, the mass fraction of Fe is <0.4%, the mass fraction of Zn is <0.04%, and the mass fraction of Ni is <0.01%;

[0016] 2. Melting and casting: smelting the smelting raw materials prepared in step 1 to obtain aluminum alloy solution, and then casting at a casting temperature of 680°C to 720°C and a casting speed of 55mm / min to 60mm / min, casting cooling water during the casting process The force is 0.003MPa~0.1MPa, and the temperature of ca...

specific Embodiment approach 2

[0021] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in step one, the mass fraction of Mn is 0.03%, the mass fraction of Mg is 0.9% and the balance is Al is ready to smelt raw materials. Others are the same as the first embodiment.

specific Embodiment approach 3

[0022] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 2, casting is performed at a casting temperature of 690° C. and a casting speed of 55 mm / min. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a manufacturing method of an automobile decoration aluminum alloy belt material and relates to a manufacturing method of the aluminum alloy belt material. The invention aims atsolving the problem that an automobile decoration aluminum alloy belt material prepared by an existing method has punching cracks and a high surface roughness. The manufacturing method comprises thesteps: 1, preparing raw materials; 2, casting; 3, heating; 4, hot rolling; 5, cold rolling; 6, annealing to obtain the automobile decoration aluminum alloy belt material. The automobile decoration aluminum alloy belt material has the advantages: the tensile strength is 150 to 158 N / mm<2>, the yield strength is 115 to 124 N / mm<2>, the elongation percentage is 10.8 to 15.4%, and the polished surfaceroughness Ra is smaller than or equal to 0.1 mu. The manufacturing method disclosed by the invention is mainly applied to preparing the automobile decoration aluminum alloy belt material.

Description

technical field [0001] The invention relates to a method for manufacturing an aluminum alloy strip. Background technique [0002] With the vigorous development of automobiles and the localization of foreign imported cars, the aluminum alloy materials required for automobiles are also developing towards localization. For example, the decoration of luggage racks, window sides, doorways, etc. Imported aluminum is used. The tensile strength of the aluminum alloy strip for automobile decoration prepared by the existing method is less than 140N / mm 2 , yield strength <100N / mm 2 , the elongation rate is less than 8%, and the roughness of the polished surface is Ra≥0.12μ, which leads to problems of stamping cracking and high surface roughness in aluminum alloy strips for automotive decoration. Contents of the invention [0003] The purpose of the present invention is to solve the problems of punching cracks and high surface roughness in the aluminum alloy strip for automobile...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/06C22C21/08C22C1/02C22F1/047
CPCC22C1/026C22C21/06C22C21/08C22F1/047
Inventor 徐宏大刘桂云冯超姜鹏张雪濛邱大伟万旭张强赵国奇
Owner NORTHEAST LIGHT ALLOY CO LTD
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