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Cold-hot compound die molding method for aluminum alloy sheet metal component

A technology of aluminum alloy and sheet metal parts, applied in the field of sheet metal forming, can solve problems such as cracking, low forming efficiency, and wrinkling, and achieve the effects of improving production efficiency, shortening forming time, and high dimensional accuracy

Active Publication Date: 2012-08-01
天津哈工永兴科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problems of low forming efficiency and easy local wrinkling and cracking of the existing hot forming method for aluminum alloy sheet metal parts, and provides a cold and hot composite mold forming method for aluminum alloy sheet metal parts

Method used

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  • Cold-hot compound die molding method for aluminum alloy sheet metal component
  • Cold-hot compound die molding method for aluminum alloy sheet metal component
  • Cold-hot compound die molding method for aluminum alloy sheet metal component

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specific Embodiment approach 1

[0023] Specific implementation mode one: (see attached figure 1 , 2 And 3) the cold and hot composite mold forming method of the aluminum alloy sheet metal part of the present embodiment is carried out according to the following steps:

[0024] 1. Heat the lower mold 1 to 200-900°C;

[0025] 2. Place the aluminum alloy slab 3 on the lower mold 1, so that the aluminum alloy slab 3 is heated to its deformation temperature;

[0026] 3. Clamp the upper mold 2 and the blank holder 4 with the lower mold 1 within 2 to 10 seconds, and press the aluminum alloy slab 3 into an aluminum alloy sheet metal part 5;

[0027] 4. Move up the aluminum alloy sheet metal part 5, the upper mold 2 and the blank holder 4 together to disengage them from the lower mold 1;

[0028] 5. Lower the temperature of the upper mold 2 and blank holder 4 to 20-150° C. and keep it there for 2-10 seconds, then remove the aluminum alloy sheet metal part 5 to complete the forming of the cold and hot compound mold ...

specific Embodiment approach 2

[0029] Specific implementation mode two: (see attached figure 1 , 2 And 3) the cold and hot composite mold forming method of the aluminum alloy sheet metal part of the present embodiment is carried out according to the following steps:

[0030] 1. Perform solid solution treatment on the aluminum alloy slab 3; heat the lower mold 1 to 200-900°C;

[0031] 2. Place the aluminum alloy slab 3 processed in step 1 on the lower mold 1, so that the aluminum alloy slab 3 is heated to its deformation temperature;

[0032] 3. Clamp the upper mold 2 and the blank holder 4 with the lower mold 1 within 2 to 10 seconds, and press the aluminum alloy slab 3 into an aluminum alloy sheet metal part 5;

[0033] 4. Move up the aluminum alloy sheet metal part 5, the upper mold 2 and the blank holder 4 together to disengage them from the lower mold 1;

[0034] 5. Cool the upper mold 2 and blank holder 4 to 20-150°C and keep it for 2-10 seconds, then remove the aluminum alloy sheet metal part 5; pe...

specific Embodiment approach 3

[0036] Specific implementation mode three: (see Figure 4 ) The difference between this embodiment and the specific embodiment 1 or 2 is that the heating method of the lower mold 1 in step 1 is to use the heating rod 6 built in the lower mold 1 for heating, and the others are the same as the specific embodiment 1 or 2.

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Abstract

The invention discloses a cold-hot compound die molding method for an aluminum alloy sheet metal component, and relates to a molding method for a sheet metal component. The invention aims to solve the technical problems that the conventional hot-state molding method for the aluminum alloy sheet metal component is low in molding efficiency and can easily cause local crinkles and fractures, and provides the cold-hot compound die molding method for the aluminum alloy sheet metal component. The cold-hot compound die molding method comprises the following steps of: 1, heating a lower die to a temperature of between 200 and 900 DEG C; 2, placing an aluminum alloy plate blank on the lower die and heating the aluminum alloy plate blank to the deformation temperature of the aluminum alloy plate blank; 3, closing the die to press the aluminum alloy plate blank into the aluminum alloy sheet metal component; 4, separating the aluminum alloy sheet metal component, an upper die and a blank holder from the lower die; and 5, cooling the upper die and the blank holder, keeping the temperature for a certain period of time, and taking the aluminum alloy sheet metal component down to finish the cold-hot compound die molding of the aluminum alloy sheet metal component. According to the method, a cold-hot compound die in which the upper die is in a cold state and the lower die is in a hot state is adopted to mold the aluminum alloy sheet metal component. The cold-hot compound die molding method is suitable for making the aluminum alloy sheet metal component.

Description

technical field [0001] The invention relates to a forming method of a sheet metal part. Background technique [0002] Aluminum alloys such as 2000 series and 6000 series can improve their strength by heat treatment methods (such as solid solution and aging). For such aluminum alloy plate parts, at present, the forming of the parts is mostly completed at room temperature, and then the parts are taken out of the mold for solid solution and aging treatment. However, it is necessary to heat the plate parts during solid solution and aging. During this process, due to the influence of uneven thermal expansion and contraction, thermal stress and internal stress, the shape and size of the parts are easy to change. For complex shapes and large sizes Parts are even more so. [0003] For aluminum alloy materials that cannot be strengthened by heat treatment, forming in a heated state is often used to improve the formability of the material, so as to realize the forming of parts with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/16
Inventor 苑世剑何祝斌凡晓波
Owner 天津哈工永兴科技有限公司
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