Chambering-forging forming method for aluminum alloy hub with complex structure and die thereof

A technology of aluminum alloy wheel hub and complex structure, applied in the field of aluminum alloy wheel hub forging, can solve the problems of high tooling investment cost, low production efficiency, low material utilization rate, etc. Effect

Inactive Publication Date: 2011-11-02
HARBIN HAFEI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The forging and spinning method generally requires 3 to 5 sets of molds, which are heated multiple times to form flash edges twice. Therefore, the cost of tooling is large, the energy consumption is large, the utilization rate of materials is low, the process is complicated, the manufacturing cost is high, and the production efficiency is low.

Method used

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  • Chambering-forging forming method for aluminum alloy hub with complex structure and die thereof
  • Chambering-forging forming method for aluminum alloy hub with complex structure and die thereof
  • Chambering-forging forming method for aluminum alloy hub with complex structure and die thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1: Combining figure 2 , image 3 , taking 20×11 inches, 20×12 inches and 20×13 inches of automobile aluminum alloy forged wheels as an example, the automobile aluminum alloy wheel hub forging and expanding forming process of the present invention comprises the following steps: 1) material preparation: the 6061 aluminum alloy of φ 300 mm Alloy casting rods are cut into billets; 2) Heating billet: fixed temperature 470°C, heat preservation 450 minutes, preheating mold: constant temperature 450°C, heat preservation 6 hours; 3) Upsetting: Forge once on a 5000T press to upset the billet to φ430 mm; 4) Molding: On the 8000T press, put the blank into figure 2 In the mold, the surface of the mold cavity is evenly coated with self-made oil-based graphite lubricant, forged twice, the spokes of the hub and the rim on one side are formed, and the rim on the other side is pre-formed. The starting forging temperature is required to be 460°C, and the final forging temperatu...

Embodiment 2

[0025] Example 2: Combining figure 2 , image 3 , taking 20×11 inches, 20×12 inches and 20×13 inches of automotive aluminum alloy forged wheel molds as examples, such as figure 2 As shown, the forging die used for the forging and expanding of automobile aluminum alloy wheels of the present invention includes an upper mold body (501), an upper mold core (502), a lower mold body (503), a lower mold core (504) and a ejector rod (505), upper mold core (502) is installed on the upper mold body (501), lower mold core (504) is installed on the lower mold body (503), and ejector rod (505) is installed on the lower mold core (504). When forging wheel hubs with different specifications of 11, 12 and 13 inches, only the corresponding upper mold core (502), lower mold core (504) and ejector rod (505) need to be replaced. The mold-guiding stop buckle adopts a round inverted wall structure. When the mold is closed, the outer wall of the upper mold core (502) stopper buckle extends into ...

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Abstract

The invention provides a chambering -forging forming method for an aluminum alloy hub with a complex structure and a die thereof. The forming method comprises the steps of: preparing for materials; heating blanks; upsetting; mould-pressing and chambering a rim. The die for realizing the chambering-forging forming method for the aluminum alloy hub with the complex structure comprises a forging die and a rim-chambering die, wherein an upper die of the forging die consists of an upper die body and an upper die core which are sequentially nested and mounted, a lower die consists of a lower die body, a lower die core and an ejector rod which are sequentially nested and mounted; and the bottom and the side wall of the assembling part of the lower die core and the lower die body are uniformly provided with 4-8 R3 penetrating exhaust grooves, the rim-chambering die consists of an upper chambering die and a lower chambering die, and the size of a cavity of the upper chambering die is same as the size of the cavity of the upper die core of the forging die. The invention realizes once-heating forming; a non-burr forging and rim-chambering forming process is adopted, thus two trimming procedures are eliminated, material utilization rate is improved, and number of equipment is reduced; and the rim-chambering die has a simple structure and is convenient for operation.

Description

(1) Technical field [0001] The invention relates to the forging technology of an aluminum alloy wheel hub, specifically a method for forging and expanding an aluminum wheel hub with a complex structure and a mold thereof. (2) Background technology [0002] The performance of aluminum alloy wheels directly depends on the manufacturing technology adopted, and its manufacturing process can be divided into forging and casting. Forged aluminum alloy wheels have the advantages of high strength, light weight, high safety, energy saving, and long life. Due to their higher performance-price ratio, the growth rate of forged aluminum alloy wheels is much higher than that of cast wheels in recent years. It is the direction of the future development of automobile wheels, and it is also a symbol of the status of high-end motorcycles. The main forming processes of forged aluminum alloy wheels are: one is the conventional forging method, that is, the round ingot or extruded bar is used as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/40B21J13/02
Inventor 王艺孙永恒刘玉新林超刘放顺单丽梅邵红艳曲荣生
Owner HARBIN HAFEI IND
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