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An aluminum alloy variable-speed extrusion-formed automobile front side beam, a vehicle, and a method for manufacturing the front side beam

A technology of extrusion molding and manufacturing methods, which is applied to vehicle parts, transportation and packaging, and substructures, etc. It can solve problems such as poor energy absorption efficiency, failure to obtain crushing and wrinkling deformation effects, and secondary injury to occupants, so as to achieve energy absorption Good effect, good deformation and energy absorption effect

Active Publication Date: 2022-04-19
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The ideal car front side beam design should not be too soft, otherwise it will not be able to effectively protect the living space of passengers; nor should the front side beam be designed too rigid, so that the vehicle acceleration response is too large, which is harmful to the occupants. Cause secondary damage, the ideal car front side beam design should find a balance between these two points
[0007] At present, the front longitudinal beam structure of automobiles mostly adopts steel plate stamping forming technology, and the front longitudinal beam structure is mostly thin-walled beam through stamping and forming of steel plate. , poor energy absorption efficiency

Method used

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  • An aluminum alloy variable-speed extrusion-formed automobile front side beam, a vehicle, and a method for manufacturing the front side beam
  • An aluminum alloy variable-speed extrusion-formed automobile front side beam, a vehicle, and a method for manufacturing the front side beam

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Embodiment 1

[0039] figure 1 and figure 2 It shows the aluminum alloy variable speed extrusion molding of the automobile front longitudinal beam of the present invention, which is an integral extrusion molding of aluminum alloy. During the extrusion molding, the extrusion speed is changed to form a rigid section or an energy-absorbing section on the front longitudinal beam Or the strength gradient section between the rigid section and the energy-absorbing section, wherein the extrusion speed of the rigid section is faster than the extrusion speed of the energy-absorbing section, and the extrusion speed of the strength gradual section is lower than the extrusion speed of the rigid section Between the extrusion speed of the energy-absorbing section.

[0040] The rigid section can guarantee the overall rigidity, the energy-absorbing section can compress and absorb energy, and induce deformation. Compression speed, so that the front side beam can have the effect of inducing deformation with...

Embodiment 2

[0053] The present invention also relates to a method for manufacturing the front longitudinal beam, specifically comprising the following steps:

[0054] S1: Connect the extrusion die to the port of the extrusion equipment through bolts;

[0055] S2: heating the aluminum alloy ingot to 360°C to 380°C, and putting it into the extrusion cylinder of the extrusion equipment;

[0056] S3: The extrusion device in the extrusion equipment advances to the extrusion die at a predetermined extrusion speed, extrudes the aluminum alloy ingot, and extrudes the aluminum alloy ingot from the die hole of the extrusion die to form an extrusion The parts are processed at a variable speed during the processing to change the compressive strength of the material, forming a rigid section or an energy-absorbing section on the front longitudinal beam or a strength gradient section between the rigid section and the energy-absorbing section.

[0057] S4: Fix one end of the extruded piece formed by the...

Embodiment 3

[0063] Such as figure 1 and figure 2 As shown, the present invention discloses an automobile front side beam formed by variable-speed extrusion of an aluminum alloy. The present invention changes the metallographic structure of the aluminum alloy during the extrusion process by controlling the extrusion speed during the extrusion process of the aluminum alloy. Furthermore, different sections of the longitudinal beam have different mechanical properties, so as to better guide the deformation and energy absorption of the longitudinal beam, optimize the energy absorption effect of the longitudinal beam during the collision process, and reduce the intrusion into the cockpit area during the collision process.

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Abstract

The present invention relates to a vehicle front longitudinal beam formed by variable-speed extrusion of aluminum alloy, a vehicle and a method for manufacturing the front longitudinal beam. For the front longitudinal beam of the present invention, it is integrally extruded from an aluminum alloy. During molding, the extrusion speed is changed to form a rigid section or an energy-absorbing section on the front longitudinal beam or a strength gradient section between the rigid section and the energy-absorbing section. For the vehicle of the present invention, which includes the above-mentioned front longitudinal beam, for the manufacturing method of the present invention, S1: connect the extrusion die to the extrusion equipment; S2: heat the aluminum alloy ingot; S3: use a predetermined The extrusion speed travels to the extrusion die, and the aluminum alloy ingot is extruded, and the speed is changed during the processing to change the compressive strength of the material, forming a rigid section or an energy-absorbing section or a rigid section to an energy-absorbing section on the front longitudinal beam The intensity gradient segment between the segments; S4: pulling the extruded part; S5: cutting the extruded part according to the preset size. The front longitudinal beam of the invention can induce deformation and improve energy absorption efficiency.

Description

technical field [0001] The invention relates to the technical field of automobile parts design, in particular to an aluminum alloy automobile front longitudinal beam. [0002] The invention also relates to a vehicle comprising the aforementioned automotive front side member. [0003] The present invention also relates to a method of manufacturing the aforementioned front side member. Background technique [0004] With the rapid development of electric vehicles, in order to increase the mileage of electric vehicles and reduce energy consumption, lightweight has become an increasingly important part of vehicle design. However, while achieving lightweight, it is also necessary to pay attention to the strength of the structure of auto parts. This is also one of the themes of today's research design. [0005] The front side member of the car is an important part of the body structure to absorb collision energy. Its front end is connected to the energy-absorbing box of the bumpe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D21/15B62D29/00B21C23/04
CPCB62D21/15B62D29/008B21C23/04
Inventor 姜潮韩旭雷飞张天昊
Owner HUNAN UNIV