Production Technology of Aluminum Alloy Bumper for Automobile
A production process, aluminum alloy technology, applied in the direction of bumpers, etc., can solve the problems of high production cost, low production efficiency, performance failure, etc., and achieve the effect of high production efficiency, low cost and high yield
Active Publication Date: 2016-03-23
CHINA ZHONGWANG
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- Abstract
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Problems solved by technology
[0005] In view of this, the purpose of the present invention is to provide a production process of aluminum alloy bumpers for automobiles, so as to solve the problems of high production cost, low production efficiency, and performance that cannot meet the requirements of the existing aluminum alloy bumpers.
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0030] As shown in the figure, the production process of the aluminum alloy bumper for automobiles in this embodiment includes the extrusion molding process of the beam, the extrusion molding process of the energy-absorbing box and the extrusion molding process of the cover plate;
[0031] The beam extrusion molding process comprises steps:
[0032] 1) Heat the aluminum alloy ingot for making the beam 1 to 505±10°C, heat the extrusion die to ≥500°C, and heat the extrusion cylinder to 450±10°C, the aluminum alloy ingot for making the beam is by mass Percent meter includes: Mg: 0.4%~0.8%, Si: 0.7%~1.3%, Cu: ≤0.1%, Mn: ≤0.4%~0.8%, Fe: ≤0.5%, Zn: ≤0.2%, Ti: ≤ 0.2, Al—residue;
[0033] 2) Adjust the extrusion coefficient to 21.7, extrude the aluminum alloy ingot, and control the extrusion speed to 5.0±0.5m / min;
[0034] 3) Water mist quenching treatment i...
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Abstract
The invention discloses production technology for an aluminium alloy bumper for automobiles. The technology comprises the horizontal beam extrusion forming process, the energy absorption box extrusion forming process, and the cover plate extrusion forming process, wherein each of the processes comprises the steps of heating raw materials, a mold and an extrusion barrel, adjusting the extrusion coefficient and extrusion speed for performing extrusion on the raw materials, as well as performing heat processing on an extrusion forming product. Through adopting appropriate aluminium alloy materials, extrusion temperature, extrusion coefficient, quenching cooling method, straightening method and aging method, the technology can produce an automobile aluminium alloy bumper horizontal beam and a cover plate both having the properties that the Rm is larger than or equal to 315 MPa, the Rp0.2 is larger than or equal to 280 MPa and the extension rate is larger than or equal to 10%, and produces an energy absorption box having the properties that the Rp0.2 ranges from 75 to 95 Mpa, the Rm is larger than or equal to 150 MPa, and the extension rate is larger than or equal to 8%; the bumper product formed after assembling is excellent in crashworthiness, good in energy absorption effect during violent impact, excellent in cushioning property, high in production efficiency and finished product rate of the whole technology, and low in cost.
Description
technical field [0001] The invention relates to a production process of an automobile bumper, in particular to a production process of an aluminum alloy bumper for an automobile. Background technique [0002] A car bumper is a safety device that absorbs and slows down external impact and protects the front and rear of the car body; a car bumper generally includes a beam, an energy-absorbing box connected to both ends of the beam and a cover plate located on the outside of the beam and the energy-absorbing box. There are brackets and towing eyes, the brackets are used to fix the bumper on the car body, and the towing eyes are used to connect with the trailer when the car breaks down. [0003] At present, the materials for manufacturing automobile bumpers are still mainly polyurethane elastomers, ABS and other materials. Polyurethane elastomers, ABS and other materials have effectively promoted the development of automobile lightweight, but the manufacturing process is cumbers...
Claims
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IPC IPC(8): B60R19/02C22F1/04C22F1/043C22F1/047C22F1/05C22C21/00C22C21/02C22C21/08
Inventor 冯小东王德营徐德升庞俊铭
Owner CHINA ZHONGWANG