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A kind of extrusion forming device and method of al/mg/al composite sheet splitting die

A composite sheet, extrusion forming technology, applied in the direction of metal extrusion dies, etc., can solve the problems of long process, low efficiency, lack of solutions, etc., to achieve the effect of simple blank preparation, stable interface bonding and high production efficiency

Active Publication Date: 2018-12-18
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing split die extrusion forming devices and methods are mainly used for the production and processing of profiles and pipes of the same material, and it is difficult to obtain the effect of aluminum alloy coating on the surface of magnesium alloy, and it is impossible to obtain Al / Mg / Al composite plates
[0006] To sum up, in the prior art, there is still no effective solution to the problems of complex pretreatment process, long process, and low efficiency in the preparation process of Al / Mg / Al composite plates.

Method used

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  • A kind of extrusion forming device and method of al/mg/al composite sheet splitting die
  • A kind of extrusion forming device and method of al/mg/al composite sheet splitting die
  • A kind of extrusion forming device and method of al/mg/al composite sheet splitting die

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Effect test

Embodiment 1

[0039]A split-die extrusion forming device for Al / Mg / Al composite plates. The device adopts a rigid structure as a whole and mainly includes three parts: an extrusion cylinder, an upper mold and a lower mold. The lower end surface of the extrusion cylinder and the upper mold of the upper mold The end face is connected through the boss, and the lower end face of the upper die is connected with the upper end face of the lower die through bolts and positioning pins. The lower die is equipped with positioning pins for installing the upper die, which is beneficial to the upper and lower dies before heat treatment. The positions of pins and screws are accurately determined, and the upper and lower molds are heat treated at the same time to shorten the manufacturing cycle; at the same time, it can make the pins not easy to fall during the use of the mold. The upper mold is provided with easy-to-operate lifting screw holes for the upper mold, and the lower mold is provided with lower m...

Embodiment 2

[0046] A split-die extrusion forming method for Al / Mg / Al composite plates, taking the preparation of 6063Al / AZ31 / 6063Al composite plates as an example to specifically illustrate the use of split-die extrusion forming dies:

[0047] 1. Select 6063 aluminum alloy casting rods and AZ31 magnesium alloy casting rods, perform homogenization treatment on the two casting rods according to the conventional heat treatment system, and then process 2 6063 aluminum rods and 1 AZ31 magnesium rod according to the hole size of the billet.

[0048] 2. Assemble the upper mold and lower mold, preheat the mold and extrusion cylinder to 330-350°C, and heat the three bars to 370-390°C.

[0049] 3. Assemble the extrusion cylinder and the mold, put two 6063 aluminum rods into the billet holes on both sides, and put one AZ31 magnesium rod into the middle billet hole.

[0050] 4. Use an extrusion machine or press to apply pressure, and the speed of the extrusion rod is 6-12mm / min.

[0051] 5. After th...

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Abstract

The invention discloses an extruding and forming device and method for a divergent die of an Al / Mg / Al composite plate. Uniform anneal treatment on an original aluminum alloy casting rod and a magnesium alloy casting rod is only needed, and the Al / Mg / Al composite plate can be formed by one-step extruding, the extruding and forming method has the advantages that preparing of blank is easy, the interface combination is stable, the procedure is short, the production efficiency is high and the like. According to the technical scheme, the extruding and forming device comprises three parts of an extruding cylinder, an upper die and a lower die, wherein three blank holes form the extruding cylinder in a machining mode and three divergent holes are formed in the upper die corresponding to the blank holes of the extruding cylinder; two aluminum rods and a magnesium rod is put into the blank holes of the extruding cylinder correspondingly, the three rod materials are pressed into the divergent holes under the action of pressing force, and the rod material surface layers (impurities such as oxide skin) are left in the extruding cylinder, and materials extruded into the divergent holes are fresh aluminum alloy and magnesium alloy materials, wherein the three molten metal flow reach the working band at the same time and are fully welded, and finally, the working band is extruded and shaped into the required size of the Al / Mg / Al composite plate.

Description

technical field [0001] The invention belongs to the field of processing non-ferrous metal composite materials, and in particular relates to a split-die extrusion forming device and method for Al / Mg / Al composite plates. Background technique [0002] Magnesium alloy is the lightest metal structure material. It has high specific strength and specific stiffness, good heat dissipation, noise reduction and vibration reduction, and electromagnetic shielding. It has unique advantages in alleviating the three world problems of energy, environmental protection, and safety. Advantage. However, poor corrosion resistance is one of the main problems of magnesium alloys, which greatly limits the wide application of magnesium alloys in engineering fields. Aluminum alloy is also a lightweight metal material, and has a relatively dense oxide film and excellent corrosion resistance. Therefore, coating aluminum alloy on the surface of magnesium alloy to make Al / Mg / Al composite sheet can have ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C23/21B21C25/02B21C23/06
CPCB21C23/06B21C23/212B21C25/02
Inventor 陈良唐建伟赵国群张存生
Owner SHANDONG UNIV