Vibrating casting and forging composite forming method for aluminum alloy forgings

A composite forming and aluminum alloy technology is applied in the field of vibration casting and forging composite forming of aluminum alloy forgings, which can solve the problems of poor compaction effect and poor forging penetration of casting preforms, and achieves low equipment investment and high material utilization rate. , the effect of saving energy

Active Publication Date: 2017-01-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a vibratory casting and forging compound forming method for aluminum alloy forgings, which solves the problems of poor forging performance and poor

Method used

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  • Vibrating casting and forging composite forming method for aluminum alloy forgings
  • Vibrating casting and forging composite forming method for aluminum alloy forgings
  • Vibrating casting and forging composite forming method for aluminum alloy forgings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: including alloy smelting, squeeze casting and vibration die forging steps, is characterized in that:

[0027] (1) Alloy melting:

[0028] Use an aluminum alloy melting furnace to heat the 6061 aluminum alloy raw material to its liquidus temperature above 650°C and 80°C, that is, 730°C, and melt and smelt it to form an aluminum alloy melt;

[0029] (2) Squeeze casting:

[0030] When the temperature of the aluminum alloy melt drops to above the liquidus temperature of 650°C and 60°C, that is, 710°C, it is poured into the cavity of a metal mold squeeze casting mold installed on a 1000kN squeeze casting press, and the aluminum alloy melt follows After the mold is cooled for 10s, the die punch is driven by the extrusion casting press slider to apply a specific pressure of 200MPa to the aluminum alloy melt in solidification and cooling, and keep it for 10s. After cooling, the extrusion casting preform of the aluminum alloy connecting rod is obtained. As shown ...

Embodiment 2

[0036] Embodiment 2: including alloy smelting, squeeze casting and vibration die forging steps, is characterized in that:

[0037] (1) Alloy melting:

[0038] Use an aluminum alloy melting furnace to heat the 6061 aluminum alloy raw material to its liquidus temperature above 650°C and 80°C, that is, 730°C, and melt and smelt it to form an aluminum alloy melt;

[0039] (2) Squeeze casting:

[0040] When the temperature of the aluminum alloy melt drops to above the liquidus temperature of 650°C and 60°C, that is, 710°C, it is poured into the cavity of a metal mold squeeze casting mold installed on a 1000kN squeeze casting press, and the aluminum alloy melt follows After the mold is cooled for 10s, the die punch is driven by the slide of the extrusion casting press to apply a specific pressure of 200MPa to the aluminum alloy melt in solidification and cooling, and keep it for 10s. After cooling, the extrusion casting preform of the aluminum alloy control arm is obtained. pieces; ...

Embodiment 3

[0045] Embodiment 3: including alloy smelting, squeeze casting and vibration die forging steps, is characterized in that:

[0046] (1) Alloy melting:

[0047] Use an aluminum alloy melting furnace to heat the A390 aluminum alloy raw material to its liquidus temperature above 650°C and 120°C, that is, 770°C, and melt and smelt it to form an aluminum alloy melt;

[0048] (2) Squeeze casting:

[0049] When the temperature of the aluminum alloy melt drops below the liquidus temperature of 650°C to 100°C, that is, 750°C, it is poured into the cavity of a metal mold squeeze casting mold installed on a 1000kN squeeze casting press, and the aluminum alloy melt follows After the mold is cooled for 5s, the die punch is driven by the slide of the extrusion casting press to apply a specific pressure of 100MPa to the aluminum alloy melt in solidification and cooling, and keep it for 20s. After cooling, the aluminum alloy swash plate extrusion casting preform is obtained. pieces;

[0050...

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Abstract

The invention provides a vibrating casting and forging composite forming method for aluminum alloy forgings and belongs to an aluminum alloy forging machining method. The vibrating casting and forging composite forming method for the aluminum alloy forgings solves the problems that by means of an existing casting and forging composite forming technology, the forging penetration is poor and the microdefect compaction effect is poor due to one-time compaction in the forging process, so that the forging defects are eliminated, and the forging performance is improved. The vibrating casting and forging composite forming method comprises the steps of alloy smelting, extrusion casting and vibrating die forging. By the adoption of the vibrating casting and forging composite forming method, the advantage that the forming performance of an aluminum alloy in the molten state is good and the advantage that through vibrating die casting, grains can be refined effectively and the density of the forgings is increased are combined; microdefect compaction during the casting process is promoted through high-pressure extrusion casting, the impact heating and stress wave superposition effect is generated through high-frequency vibration and compaction, the forging penetration is improved, the compaction and forge welding of the defects during the forging process are promoted, and the mechanical property is improved; and the vibrating casting and forging composite forming method has the beneficial effects that the technological process is short, the material utilization rate is high, energy is saved and the equipment investment is small and is especially suitable for forming of the complex aluminum alloy forgings of automotive steering knuckle control arms and the like.

Description

technical field [0001] The invention belongs to a processing method for an aluminum alloy forging, in particular to a vibration casting and forging composite forming method for an aluminum alloy forging. Background technique [0002] Aluminum alloy forgings have the advantages of low density, high specific strength and specific stiffness, good corrosion resistance, and easy recycling. They have become the preferred light metal materials for lightweight manufacturing at home and abroad, and are widely used in automobiles, aircraft, ships and other fields. However, due to the poor plasticity of aluminum alloy, large flow resistance, strong speed sensitivity, and small permissible deformation degree in a single pass, the forming of complex forgings often requires multiple processes, generally including blanking, multi-pass roll forging billets, pre-forging, Final forging, etc., the process flow is long, and the production efficiency and material utilization rate are low. [00...

Claims

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Application Information

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IPC IPC(8): B22D18/02B21J5/02
CPCB21J5/02B22D18/02
Inventor 邓磊王新云金俊松夏巨谌
Owner HUAZHONG UNIV OF SCI & TECH
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