Manufacturing method of rotationally-forged aluminum alloy hub

An aluminum alloy wheel hub and aluminum alloy technology, which is applied in the field of automobile parts manufacturing, can solve the problems of high energy consumption and cost, high forging cost, complicated process, etc., and achieve the effects of reducing energy consumption, improving alloy structure and simplifying process.

Active Publication Date: 2014-01-01
ZHEJIANG GKO IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process is complicated, energy consumption is large, and the cost of forging is high.
The existing aluminum alloy wheels also use semi-solid alloy thixotropic rods as raw materials, but in order to be suitable for thi

Method used

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  • Manufacturing method of rotationally-forged aluminum alloy hub
  • Manufacturing method of rotationally-forged aluminum alloy hub
  • Manufacturing method of rotationally-forged aluminum alloy hub

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment is based on a 17-inch automobile forged aluminum alloy wheel hub:

[0031] According to the size of the aluminum alloy wheel hub, the volume of the required blank is calculated, and the aluminum alloy hot-rolled thick plate is punched into a round cake-shaped blank; more specifically, the 7A04 aluminum alloy thick plate with a thickness of 65mm is punched into a size of Φ350mm×65mm round cake-shaped billet; then, the billet surface is cleaned and degreased; preferably, the 7A04 aluminum alloy hot-rolled thick plate is made of 7A04 aluminum alloy ingot through hot rolling;

[0032] Put the round cake-shaped blank obtained by punching above into a heating furnace and heat it to 440°C for preheating for 30 minutes;

[0033] Before forging and pressing, preheat the mold to 450°C in 20 minutes, separate the upper mold and the lower mold of the mold, and spray a lubricant on the working surface of the mold, such as artificial wax; then, the above Put the preh...

Embodiment 2

[0036]This embodiment is based on a 17-inch automobile forged aluminum alloy wheel hub:

[0037] According to the size of the aluminum alloy wheel hub, the volume of the required blank is calculated, and the aluminum alloy hot-rolled thick plate is punched into a round cake-shaped blank; more specifically, the 6061 aluminum alloy hot-rolled thick plate with a thickness of 65mm is punched into a size of Φ350mm×65mm round cake-shaped blank; then, cleaning and degreasing the surface of the blank; preferably, the 6061 aluminum alloy hot-rolled thick plate is made of 6061 aluminum alloy ingot through hot rolling;

[0038] Put the round cake-shaped blank obtained by punching above into a heating furnace and heat to 470°C for preheating for 40 minutes;

[0039] Before forging and forming, preheat the mold to 460°C in 25 minutes, separate the upper mold and the lower mold of the mold, and spray a lubricant on the working surface of the mold, such as artificial wax; then, the above Pu...

Embodiment 3

[0042] This embodiment is based on a 17-inch automobile forged aluminum alloy wheel hub:

[0043] According to the size of the aluminum alloy wheel hub, the volume of the required blank is calculated, and the aluminum alloy hot-rolled thick plate is punched into a round cake-shaped blank; more specifically, the 6061 aluminum alloy hot-rolled thick plate with a thickness of 58mm is punched into a size of Φ370mm×58mm circular cake-shaped blank; then, clean and degrease the surface of the blank;

[0044] Put the round cake-shaped blank obtained by punching above into a heating furnace and heat to 450°C for preheating for 40 minutes;

[0045] Before forging and forming, preheat the mold to 450°C in 20 minutes, then separate the upper mold and the lower mold of the mold, and spray a lubricant on the working surface of the mold, such as artificial wax; then, Put the above-mentioned preheated round cake-shaped blank into a mold, and use a 1500-ton forging press to perform forging an...

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Abstract

The invention relates to a manufacturing method of a rotationally-forged aluminum alloy hub and belongs to the technical field of manufacturing of automobile parts. Aiming to solve the problems of complicated process, low production efficiency and high energy consumption in the prior art, the manufacturing method of the rotationally-forged aluminum alloy hub is provided and includes blanking a thick aluminum alloy hot-rolling plate into a cake blank according to the size of the hub; heating and preheating at the temperature of 430 DEG C to 470 DEG C; placing the preheated blank into a die and forging in a forge press to obtain a forged aluminum alloy hub blank; finally placing the forged aluminum alloy hub blank into the forge press for rotary forging and forming, then performing heat treatment and machining to obtain the rotationally-forged aluminum alloy hub. By the method without need of upsetting and with low preheating temperature before forging and forming, process is greatly simplified, production efficiency is improved, and energy consumption is reduced. Besides, the obtained hub has good mechanical property.

Description

technical field [0001] The invention relates to a method for preparing a forged aluminum alloy wheel hub, which belongs to the technical field of automobile parts manufacturing. Background technique [0002] As one of the important parts in the driving system of the car, the wheel hub is also a kind of security device with high requirements. It not only bears the weight of the car, but also reflects the appearance of the car. In the past 10 years, the average annual growth rate of the global aluminum alloy automobile wheel production has reached 7.6%. It can be seen that with the increasing demand for lightweight automobiles, aluminum alloy wheels are gradually replacing traditional steel wheels in modern automobile manufacturing and are widely used. [0003] Existing aluminum alloy wheels are usually produced by casting or die-casting methods. For conventional casting methods, whether it is differential pressure casting, low-pressure casting or gravity casting, the high-sp...

Claims

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Application Information

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IPC IPC(8): B23P15/00B21D22/16
CPCB21D22/16B23P15/00B23P2700/50B60B27/00
Inventor 李书通尤志彬王新春朱其柱丁荣辉
Owner ZHEJIANG GKO IND CO LTD
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