Foamed aluminum sandwich board bend forming method

A bending forming and sandwich panel technology, which is applied in laser welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of complex processing devices, inability to use foamed aluminum sandwich panels for bending forming, unfavorable laser bending forming, etc., and achieve high Produce flexibility, avoid oxidation effect

Inactive Publication Date: 2013-01-16
SUZHOU UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This method can realize the bending of thin-walled tubes. However, on the one hand, this method requires the use of two laser beams, and the processing equipment is relatively complicated; This method cannot be used for bending forming of aluminum foam sandwich panels; on the other hand, the surface of aluminum foam sandwich panels usually has strong reflective performance and is easy to oxidize, which is not conducive to the laser bending forming in this patent

Method used

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  • Foamed aluminum sandwich board bend forming method
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Embodiment 1

[0026] Embodiment one: see figure 1 As shown, the schematic diagram of the device used in this embodiment is shown in the figure. The processing device includes a workbench 4 and a chuck 3 located on the workbench. The aluminum foam sandwich panel is clamped by the chuck, and the upper surface is drawn with processing In a straight line, the laser beam 1 and the shielding gas conduit 6 move synchronously along the scanning direction 5, or the chuck drives the aluminum foam sandwich panel to move. Nitrogen gas is injected into the shielding gas conduit 6 .

[0027] CO was carried out on the 80×20×10mm aluminum foam sandwich panel with a porosity of 80%. 2 Laser scanning, the scanning line position is at the center of the plate, the length is 20mm, the laser power is 150W, scanning is performed 10 times, and the scanning rate is 8mm / s. The operation steps are as follows: (1) Use black hand spray paint to spray on the scanning area, and use the clamp to clamp on one side. (2) ...

Embodiment 2

[0029] Embodiment 2: Using the same device as in Embodiment 1, CO 2 Laser scanning, the scanning line position is in the center of the plate, the length is 20mm, the laser power is 150W and the scanning rate is 8mm / s for 15 times. The operation steps are as follows: (1) Use black hand spray paint to spray on the scanning area, and use the clamp to clamp on one side. (2) The scanning speed is 8mm / S scanning at a constant speed, and the laser bending is realized through the laser numerical control processing system. (3) After completely cooling naturally, use a laser displacement sensor to measure the deformation angle.

[0030] After processing in this embodiment, the bending angle of the plate is 6 degrees.

[0031] By increasing the number of scans, the bending angle of the sheet can be increased.

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Abstract

The invention discloses a foamed aluminum sandwich board bend forming method which is characterized by including steps of (1), compounding a layer of light absorption agents on the panel surface of a foamed aluminum sandwich board; (2), marking a machining straight line on the surface of the foamed aluminum sandwich board; (3), irradiating along the machining straight line on the surface of the foamed aluminum sandwich board by a laser with a scanning rate ranging from 3mm/s to 8mm/s, and heating the foamed aluminum sandwich board by accumulation of multiple irradiations to enable the same to generate thermal stress and generate trace bending deformation back to a laser beam; and (4) repeating the step of (3) until the bending requirements are met. By the foamed aluminum sandwich board bending method, any bending parts, special-shaped parts, other complicated parts with three-dimensional curved surfaces and the like can be formed. The foamed aluminum sandwich board bend forming method has the advantages that forming precision is high, production cycle is short, the formed parts are high in flexibility, and a wide application foundation is provided for further application of the foamed aluminum sandwich board.

Description

technical field [0001] The invention relates to a material forming method, in particular to a bending forming method for foamed aluminum sandwich panels. Background technique [0002] Aluminum foam is made by adding additives to pure aluminum or aluminum alloy and undergoing a foaming process, which has both metal and bubble characteristics. Aluminum foam has excellent physical properties, chemical properties, mechanical properties and recyclability, so that it has broad application prospects in today's material field and is a promising engineering material. [0003] Aluminum foam sandwich panel (AFS) is a plate composed of composite metal panels on both sides of aluminum foam. It has a very wide range of applications in the automotive industry, lathe industry, aerospace, ships, rail transportation and construction industries. prospect. However, at present, the plates that can be directly prepared are aluminum foam sandwich panels, and in some applications, no matter wheth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D11/20B21D26/06B23K26/18B23K26/12
Inventor 张敏陈长军
Owner SUZHOU UNIV
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