7-series aluminum alloy extrusion die

An extrusion die, aluminum alloy technology, applied in the direction of metal extrusion die, can solve the problems of large deformation resistance of metal, poor fluidity, large force on the die, etc., to reduce the degree of elastic deformation, reduce the flow resistance of the alloy, and increase the resistance The effect of force area

Inactive Publication Date: 2015-04-29
SHANGHAI UNISON ALUMINUM PRODS
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Due to the poor fluidity of the 7 series material, the material is hard, and the metal deformation resistance is large
When extruding this product, the mold is under a lot of force, which leads to the deformation of the mold. When the deformation reaches the maximum deformation of the mold, the mold bridge will have cracks, and the mold will not be able to produce

Method used

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  • 7-series aluminum alloy extrusion die
  • 7-series aluminum alloy extrusion die
  • 7-series aluminum alloy extrusion die

Examples

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Embodiment

[0034] Such as Figure 4 As shown, the extrusion die of the present invention has a size of ￠260*200, and its structure is basically the same as the extrusion die of the comparative example. It also includes an upper die 1 and a lower die 2, wherein the upper die 1 is provided with a shunt bridge 3 and The mold core 4 and the lower mold 2 are provided with a welding chamber 5 and a mold hole 7. Diversion holes 6 are arranged on the inner side of the diversion bridge 3, and the material flow is divided into multiple strands through the diversion holes 6. After the streams are combined in the welding chamber 5 for welding, they are extruded from the die hole 7 to obtain the profile.

[0035] The extrusion die also includes positioning pins for limiting the upper and lower molds and screws 8 for connecting and fixing the upper mold and the lower mold.

[0036] The difference between the extrusion die of this embodiment and the comparative example is that Figure 5 As shown, in the ex...

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Abstract

The invention provides a 7-series aluminum alloy extrusion die. The extrusion die comprises an upper die and a lower die which are connected, wherein shunting holes, a shunting bridge and a die core are arranged on the upper die; the lower die is provided with a welding chamber and a die hole; the width of the shunting bridge is 30-35 mm. With the adoption of the extrusion die, about 2t of the service life of the die traditionally can be increased to 7t and even more, the production cost is greatly reduced, and mass production of hollow aluminum alloy products is realized successfully.

Description

Technical field [0001] The invention relates to an extrusion die, in particular to an extrusion die of 7 series aluminum alloy. Background technique [0002] In the context of increasing demands for energy conservation and environmental protection in the world, the automotive industry is developing towards lightweight and low energy consumption. [0003] Aluminum profile is the material of choice for lightweight cars, with excellent performance that other materials do not have, but it has higher requirements for size and performance. The 7 series aluminum alloy has high strength and high ductility and is the main grade used. [0004] However, as we all know, 7 series aluminum alloy, due to the addition of zinc, lead, magnesium and copper and other alloying elements, the material is hard and the fluidity is poor. Countless domestic and foreign manufacturers rushed to develop first, but all ended in failure. The main reason is that the extrusion die is easily damaged and has a low l...

Claims

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Application Information

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IPC IPC(8): B21C25/02
CPCB21C25/02
Inventor 罗世兵李文通
Owner SHANGHAI UNISON ALUMINUM PRODS
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