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Device and method for hydraulic injection filled type extrusion cast forming of molten aluminum magnesium alloy

An aluminum-magnesium alloy and squeeze casting technology, which is applied in the field of material processing engineering, can solve problems such as the inability to achieve near-net shape and easy oxidation of liquid metals, and achieve the effects of preventing oxidation, improving mechanical properties, and avoiding contact

Active Publication Date: 2011-11-16
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing squeeze casting device cannot achieve near-net shape, and the problem that the liquid metal is easily oxidized in the existing squeeze casting process, and then provide a hydraulic injection after smelting of aluminum-magnesium alloy Mold filling squeeze casting forming device and method

Method used

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  • Device and method for hydraulic injection filled type extrusion cast forming of molten aluminum magnesium alloy
  • Device and method for hydraulic injection filled type extrusion cast forming of molten aluminum magnesium alloy
  • Device and method for hydraulic injection filled type extrusion cast forming of molten aluminum magnesium alloy

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specific Embodiment approach 1

[0016] Specific implementation mode one: combine Figure 1 to Figure 3 To illustrate this embodiment, the aluminum-magnesium alloy smelting hydraulic injection filling squeeze casting forming device of this embodiment includes a melting furnace 1, a punch 6, a limit elastic scale 7 and a die 8; There is a feed port 8-1, the punch 6 and the die 8 are co-installed, a cavity 13 is formed between the punch 6 and the die 8, and the limit elastic scale 7 is connected between the punch 6 and the die 8 Between, the bottom plate of the melting furnace 1 is provided with a discharge port 1-1, and the hydraulic injection molding extrusion casting forming device after the aluminum-magnesium alloy is smelted also includes a hydraulic injection device 12, and the hydraulic injection The device 12 includes a push cylinder 3, a first push rod 5, a second push rod 11 and a double-piston rod hydraulic cylinder 9. The push cylinder 3 has a stepped hole 3-1 along its axis, and the melting The fu...

specific Embodiment approach 2

[0018] Specific implementation mode two: combination figure 1 , figure 2 and Figure 4 To illustrate this embodiment, the bottom plate 1-2 of the melting furnace 1 of this embodiment is made of a horizontal plate 1-2-1 and a parabolic plate 1-2-2, and the parabolic plate 1-2-2 and the horizontal plate 1 The connecting end of -2-1 is lower than the vertex O of the parabolic plate 1-2-2, and the discharge port 1-1 is arranged on the parabolic plate 1-2-2. With such arrangement, the impurities in the molten metal will sink on the horizontal plate 1-2-1, which prevents the impurities in the molten metal from flowing out from the discharge port 1-1, which will affect the quality of the workpiece and the mechanical properties of the workpiece. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0019] Specific implementation mode three: combination Figure 1 to Figure 3 To illustrate this embodiment, the aluminum-magnesium alloy smelting hydraulic pressure injection filling squeeze casting forming device of this embodiment also includes a first ceramic layer 4 and a second ceramic layer 10, a first push rod 5 and a second push rod The first ceramic layer 4 is provided on the opposite end surface of 11 , and the second ceramic layer 10 is provided on the opposite end surface of the second push rod 11 to the first push rod 5 . With such arrangement, the ceramic layer is in contact with the molten metal, has high temperature resistance, and prevents the molten metal from corroding the push rod. Other compositions and connections are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention provides a device and a method for hydraulic injection filled type extrusion cast forming of a molten aluminum magnesium alloy, and relates to a device and a method for extrusion cast forming of an aluminum magnesium alloy, which aim to solve the problems that the conventional extrusion casting device cannot realize near net forming and liquid metal is easily oxidized in the extrusion casting process. In the device, a material pushing barrel is provided with a stepped hole; a smelting furnace and a female die are arranged in parallel on the material pushing barrel; and a first charging ram and a second charging ram are arranged in the large-diameter section of the stepped hole and are connected with a piston rod of a double piston rod hydraulic cylinder respectively. The method comprises the following steps of: arranging the smelting furnace and the female die on the material pushing barrel, forming a cavity between a male die and the female die, and introducing protective gas into the smelting furnace and the material pushing barrel; adjusting the distance between the first charging ram and the second charging ram to realize quantitative pouring; filling the liquid metal; pressurizing the male die to realize the near net forming of workpieces; and making the male die in return stroke, and taking the workpieces out. The device and the method are used for a production process of aluminum magnesium alloy workpieces.

Description

technical field [0001] The invention relates to an aluminum-magnesium alloy squeeze casting forming device and method, in particular to a hydraulic injection mold filling squeeze casting forming device and method after the aluminum-magnesium alloy is smelted, and belongs to the field of material processing engineering. Background technique [0002] Squeeze casting (liquid die forging) is a metal forming technology between casting and die forging. It is to pour a certain amount of liquid or semi-solid metal directly into the concave mold, then close the cavity through the punch and apply mechanical static pressure, and use the fluidity of the liquid metal to fill the entire cavity, so that the liquid metal crystallizes under pressure , solidification and a small amount of plastic deformation. Compared with casting, it avoids shrinkage cavity and porosity of the parts, refines the grains, and improves the strength; compared with die forging, it saves the forming process and f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D18/02
Inventor 杜之明陈刚曹琪
Owner HARBIN INST OF TECH
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