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Forging die structure and forging method for disc type aluminum alloy automobile hub

A technology for automobile hubs and aluminum alloys, applied to wheels, manufacturing tools, vehicle parts, etc., can solve the problems of easy folding, difficult positioning, uneven metal distribution, etc., and achieve good stable positioning, prevent folding and full of defects.

Active Publication Date: 2020-12-11
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of difficult positioning, prone to folding defects, uneven metal distribution and easy wear of the mold in the wheel forming technology in the prior art, and obtain aluminum alloy wheel forgings that meet the requirements of shape, size and mechanical properties

Method used

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  • Forging die structure and forging method for disc type aluminum alloy automobile hub
  • Forging die structure and forging method for disc type aluminum alloy automobile hub
  • Forging die structure and forging method for disc type aluminum alloy automobile hub

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] The blank is preheated to 500°C, the pre-forging die is 420°C, the diameter of the blank is 199mm, and the height is 244mm.

[0063] Place the preheated blank in the positioning groove of the lower die of the pre-forging die (align the pre-forging upper die with the pre-forging lower die, and use the positioning module to ensure that the center of the pre-forging upper die is always in line with the pre-forging die during movement) The center of the lower die is located on the same axis), the pre-forging upper die descends, and the descending speed is 18mm / s, and the pre-forging is carried out. When the reduction of the pre-forging upper die is 20% of the original height of the blank, the pre-forging ends;

[0064] Heat the final forging die to 425°C, rotate the pre-forging 180° (relative to the direction of pre-forging, turn it upside down, the top of the pre-forging is facing down), and place it on the core of the lower die of the final forging die, so that the pre-for...

Embodiment 2

[0074] Preheat the billet to 500°C, the pre-forging die is at 420°C, the diameter of the billet is 200mm, and the height is 250mm.

[0075] Place the preheated blank in the positioning groove of the pre-forging die of the pre-forging die (align the pre-forging die with the pre-forging die, use the positioning module to ensure that the center of the pre-forging die is in the process of movement Always on the same axis as the center of the pre-forging lower die), the pre-forging upper die descends at a speed of 21mm / s for pre-forging, when the reduction of the pre-forging upper die is 23% of the original height of the billet, End of pre-forging;

[0076] Heat the final forging die to 425°C, rotate the forging 180° (relative to the direction of the pre-forging, turn it upside down, the top of the pre-forging is facing down), and place it on the lower mold of the final forging die, so that the bottom of the pre-forging is in line with the final forging. The core contact of the fo...

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Abstract

The invention relates to a forging method and a pre-forging die for a disc type aluminum alloy automobile hub forge piece and application. By the adoption of the pre-forging die and the method, a cylindrical blank, with the fixed size, produced by existing equipment can be conveniently and accurately positioned in the pre-forging die stably, and a pre-forge piece with reasonable metal distributioncan be forged. The pre-forging die comprises an upper pre-forging die body and a lower pre-forging die body, wherein a die cavity is formed by the opposite space of the upper pre-forging die body andthe lower pre-forging die body; an upper pre-forging die core is arranged on the opposite portion of the upper pre-forging die body and the lower pre-forging die body; and an annular groove is formedbetween the upper pre-forging die core and the surrounding upper pre-forging die body. The forging method comprises the steps that after pre-forging is conducted through the pre-forging die, the pre-forge piece is turned over by 180 degrees up and down and placed on a lower die body of a finish-forging die, and then finish-forging is conducted through the finish-forging die. The cylindrical blankwith the fixed size can be conveniently and accurately positioned and pre-forged on the lower die body of the pre-forging die stably, the forged pre-forge piece is conveniently and accurately placedon the lower die body of the finish-forging die to be positioned stably, and the finish-forge piece with reasonable metal distribution and the shape meeting the requirement is forged in the finish-forging process.

Description

technical field [0001] The invention belongs to the technical field of automobile wheel hub forgings, and in particular relates to a forging die structure and a forging method of a disc-type aluminum alloy automobile wheel hub forging. Background technique [0002] The information disclosed in this Background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily to be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] As an important part of the car, the wheel hub plays a very important role. Green, energy-saving and environmental protection has become the theme of today's era, and lightweight has become the development direction of the automotive field. In the automotive field, aluminum alloy forgings are used instead of steel forgings, which has the advantages of reducing weight, improving energ...

Claims

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Application Information

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IPC IPC(8): B21J13/02B21K1/40
CPCB21J13/02
Inventor 赵国群王晓伟孙谱李洪光
Owner SHANDONG UNIV
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