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Production process of aluminum profiles for automobile crash energy-absorbing parts and the produced aluminum profiles

A technology of collision energy absorption and production technology, which is applied in the field of aluminum and aluminum alloy extrusion processing and heat treatment, can solve the problems of poor compression performance of aluminum profiles, high extrusion difficulty, high element content, etc., achieve good compression performance and improve tensile strength Mechanical properties, the effect of simple production process

Active Publication Date: 2020-03-27
SHANDONG NANSHAN ALUMINUM +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Domestic automobile manufacturers mostly use alloys such as 6082, 7005 and 7003 for the design of aluminum profiles used for crash energy-absorbing parts, but these alloys have high element content and are difficult to extrude, and the improvement of tensile mechanical properties often leads to plastic The reduction, so that the compression performance of aluminum profiles is poor

Method used

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  • Production process of aluminum profiles for automobile crash energy-absorbing parts and the produced aluminum profiles
  • Production process of aluminum profiles for automobile crash energy-absorbing parts and the produced aluminum profiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] A production process of aluminum profiles for automobile collision energy-absorbing parts, comprising the following steps:

[0114] (1) Homogenization annealing treatment: The homogenization annealing treatment of the alloy ingot made of NS6082 alloy material has a heat preservation temperature of 550°C and a heat preservation time of 10 hours. The alloy composition of the alloy ingot used includes:

[0115] Si: 0.89%, Fe: 0.32%, Cu: 0.07%, Mn: 0.63%, Mg: 0.92%, Cr: 0.11%, Zn: 0.17%, Ti: 0.06%, Nb: 0.04%, V: 0.03%, The balance is Al and unavoidable impurities.

[0116] (2) Cooling and extrusion: Cool the alloy ingot to 520±2°C, and then directly send it to the extrusion cylinder for extrusion, so that it passes through the mold to produce a "day"-shaped cavity aluminum profile with an overall size of 60× 40mm, the wall thickness is 3mm; among them, the extrusion barrel temperature is 438°C, the mold temperature is 485°C, and the extrusion speed is 7m / min;

[0117] (3)...

Embodiment 2

[0121] A production process of aluminum profiles for automobile collision energy-absorbing parts, comprising the following steps:

[0122] (1) Homogenization annealing treatment: The homogenization annealing treatment of the alloy ingot made of NS6082 alloy material has a heat preservation temperature of 565°C and a heat preservation time of 8 hours. The alloy composition of the alloy ingot used includes:

[0123] Si: 0.95%, Fe: 0.28%, Cu: 0.06%, Mn: 0.67%, Mg: 0.97%, Cr: 0.08%, Zn: 0.18%, Ti: 0.05%, Nb: 0.05%, V: 0.05%, The balance is Al and unavoidable impurities.

[0124] (2) Cooling and extrusion: Cool the alloy ingot to 505±2°C, and then directly send it to the extrusion cylinder for extrusion, so that it passes through the mold to produce a "day"-shaped cavity aluminum profile, with an overall size of 60× 40mm, the wall thickness is 3mm; among them, the extrusion cylinder temperature is 420°C, the mold temperature is 465°C, and the extrusion speed is 4m / min;

[0125] (...

Embodiment 3

[0129] A production process of aluminum profiles for automobile collision energy-absorbing parts, comprising the following steps:

[0130] (1) Homogenization annealing treatment: The homogenization annealing treatment of the alloy ingot made of NS6082 alloy material has a heat preservation temperature of 580°C and a heat preservation time of 5.5 hours. The alloy composition of the alloy ingot used includes:

[0131] Si: 1.12%, Fe: 0.41%, Cu: 0.05%, Mn: 0.55%, Mg: 1.08%, Cr: 0.13%, Zn: 0.18%, Ti: 0.07%, Nb: 0.03%, V: 0.06%, The balance is Al and unavoidable impurities.

[0132] (2) Cooling and extrusion: Cool the alloy ingot to 495±2°C, and then directly send it to the extrusion barrel for extrusion, so that it passes through the mold to produce a "day"-shaped cavity aluminum profile with an overall size of 60× 40mm, the wall thickness is 3mm; among them, the extrusion cylinder temperature is 445°C, the mold temperature is 475°C, and the extrusion speed is 10m / min;

[0133] (...

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Abstract

The invention discloses a production process of an aluminum profile for automobile impact energy absorbing components and a produced aluminum profile, relates to the technical field of aluminum and aluminum alloy extrusion machining and heat treatment. The production process comprises the following steps that an aluminum alloy ingot is subjected to uniform annealing treatment, extrusion and quenching treatment, tensile treatment and aging treatment in sequence; then, the aluminum alloy ingot is cooled to 490-525 DEG C after the uniform annealing treatment, and extrusion is carried out again; and the aging treatment includes first, natural aging treatment and then secondary artificial aging treatment, the natural aging treatment time is carried out for 30-60 h, the heat preservation temperature of a first artificial aging stage is 100-120 DEG C, the heat preservation time is 2-3.5 h, the heat preservation temperature of a second artificial aging stage is 150-170 DEG C, and the heat preservation time is 8-12 h. By reasonably designing parameters of extrusion process and heat treatment process, the production process can improve tensile mechanical properties simultaneously without reducing the plasticity, so that the aluminum profile has better compression performance.

Description

technical field [0001] The invention relates to the technical field of extrusion processing and heat treatment of aluminum and aluminum alloys, in particular to a production process of aluminum profiles for automobile collision energy-absorbing parts and the produced aluminum profiles. Background technique [0002] Automobile lightweight has become a hot trend in domestic and foreign automobile manufacturing industries. With the continuous application of all-aluminum passenger bodies, the advantages of aluminum alloys in automotive lightweight materials are fully displayed. As far as the existing application status is concerned, aluminum alloy extrusions have been widely used in passenger car heat exchange parts, multi-channel pipes, floor beams, supports, anti-collision beams and other parts. Among them, for the aluminum profiles used in automobile anti-collision beams, energy-absorbing boxes and other parts, it is usually required to have medium strength, and have excellen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/047C22F1/043C22F1/04
CPCC22F1/04C22F1/043C22F1/047
Inventor 程仁策王兴瑞程仁寨张涵源肖栋姜爱玉张洪辉杨云东张启东任伟才李加雷郑卓阳
Owner SHANDONG NANSHAN ALUMINUM
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