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Aluminum alloy section for automobile connecting plate and manufacturing method thereof

The invention relates to an aluminum alloy profile and a manufacturing method technology, which is applied to the aluminum alloy profile for automobile connecting plate and the manufacturing field thereof, which can solve the problems of qualified, multiple waste, wide control range, etc. performance effect

Inactive Publication Date: 2017-12-19
SHANDONG NANSHAN ALUMINUM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the control range of each process link for manufacturing aluminum alloy profiles for automobile connecting plates is relatively wide, and the heat treatment process is difficult to control. The prepared aluminum alloy profiles are prone to defects such as distortion and deformation during the heat treatment process. Dimensions and mechanical properties are greatly affected, and it is impossible to guarantee that the prepared aluminum alloy profiles are qualified in each wall size, and it cannot be directly used to manufacture automobile connecting plates with different wall thicknesses, especially the precision of the holes on the automobile connecting plate cannot be satisfied. The positional relationship leads to poor product uniformity and stability, and various mechanical properties cannot meet the requirements
In addition, the use of existing aluminum alloy profiles to process automobile connecting plates will produce more waste products, which directly leads to low production efficiency and high production energy consumption

Method used

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  • Aluminum alloy section for automobile connecting plate and manufacturing method thereof
  • Aluminum alloy section for automobile connecting plate and manufacturing method thereof
  • Aluminum alloy section for automobile connecting plate and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0058] This embodiment provides an aluminum alloy profile for automobile connecting plates, which is prepared by the following manufacturing method:

[0059] a. Melting: Put the pure electrolytic aluminum liquid into the dump smelting furnace, add other alloying element components for smelting, the smelting temperature is 745 ℃, so that the raw materials are completely melted, and the aluminum alloy melt with uniform composition is obtained. The melt consists of the following alloying elements in weight fraction: Si: 0.45%, Fe: 0.1%, Cu: 0.05%, Mn: 0.06%, Mg: 0.55%, Cr: 0.03%, Zn: 0.05%, Ti :0.06%, other single elements≤0.05%, the total amount of other impurity elements≤0.15%, the balance is Al.

[0060] b. Refining treatment: transfer the above-mentioned melt to a holding furnace, and then adjust the temperature of the melt to 740°C for refining in the furnace: the volume ratio of the argon-chlorine mixed gas introduced is 75% for argon and 75% for chlorine 25%, the rotor speed i...

Embodiment 2

[0073] This embodiment provides an aluminum alloy profile for an automobile connecting plate. The manufacturing method of the aluminum alloy profile for an automobile connecting plate is substantially the same as the manufacturing method in Example 1. The difference lies in: the melt in this embodiment, and The subsequently formed cast rod is composed of the following alloying elements in weight fraction: Si: 0.50%, Fe: 0.09%, Cu: 0.08%, Mn: 0.07%, Mg: 0.58%, Cr: 0.04%, Zn: 0.08%, Ti: 0.07%, other single elements ≤0.05%, total other impurity elements ≤0.15%, the balance is Al, and finally an aluminum alloy profile for automobile connecting plates is prepared.

Embodiment 3

[0075] This embodiment provides an aluminum alloy profile for an automobile connecting plate. The manufacturing method of the aluminum alloy profile for an automobile connecting plate is roughly the same as the manufacturing method in Example 1, except that the extrusion step used in this embodiment The exit speed of the extruded profile is 1.3m / min, and finally the aluminum alloy profile for automobile connecting plate is produced.

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Abstract

An aluminum alloy profile for an automobile connection plate and a manufacturing method thereof, relating to the technical field of preparation of an aluminum alloy profile, the method for manufacturing an aluminum alloy profile for an automobile connection plate comprises the following steps: alloy smelting, refining treatment, casting into rods, casting rods Sawing, homogenizing annealing, peeling of cast rod surface, casting rod heating, extrusion, online quenching, stretching and straightening, sawing of finished products, artificial aging, this manufacturing method strictly controls the parameters in the process steps, and can be mass-produced The size of each wall is qualified and has good mechanical properties, which meets the strength requirements of aluminum alloy materials for automobile connection plates; the prepared aluminum alloy profiles for automobile connection plates can be specially used to produce automobile connection plates, which can reduce the occurrence of unqualified rates. Improve production efficiency and reduce manufacturing costs.

Description

Technical field [0001] The invention relates to the technical field of preparation of aluminum alloy profiles, and in particular to an aluminum alloy profile for automobile connecting plates and a manufacturing method thereof. Background technique [0002] Aluminum alloy materials have small specific gravity, high specific strength, good corrosion resistance, good formability, mechanical properties, physical properties and process properties. They are widely used in automobile manufacturing, such as automobile engines, heat exchangers, wheels and bodywork. Automobile connecting plates are mainly composed of aluminum alloy extruded profiles, which need to meet the requirements of strength while ensuring light weight and aesthetics. The cross-sectional structure of the car connecting plate is as figure 1 As shown, the cross-sectional shape is bowling and the structure is more complicated. The automobile connecting plate is hollow, with thin and uneven walls, and has two pairs of i...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/02B23P15/00
CPCC22C21/08B23P15/00C22C1/026
Inventor 姜海涛马军星王岗杨亚平赵海滨史春丽张启东阎昭辉
Owner SHANDONG NANSHAN ALUMINUM
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