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Rotary swaging forming method for automobile aluminum alloy wheel hubs

A technology for automobile wheels and aluminum alloys, which is applied to wheels, vehicle parts, metal processing equipment, etc., and can solve the problems of high energy consumption, complicated process, and high cost of forgings

Inactive Publication Date: 2013-03-06
金刚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional aluminum alloy wheel forging forming method, although the produced aluminum alloy wheel has good mechanical properties, but requires a large-tonnage hot die forging press, and has complex procedures, high energy consumption, high forging cost, high die loss, etc. defect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Material preparation: Calculate the volume of the required blank according to the wheel hub parts diagram, take the 15-inch wheel hub as an example, cut the semi-solid alloy thixotropic aluminum alloy bar material for the cylindrical forged hub into a blank with a diameter of 450mm;

[0014] (2) Cleaning: clean the billet to remove surface impurities such as oil stains;

[0015] (3) Blank preheating: heat the cut blank to 590°C in 30 minutes and keep it warm for 1 hour;

[0016] (4) Forging: Before forging work, preheat the mold to 450°C in 20 minutes, separate the upper mold and lower mold, spray lubricant on the working surface of the mold, and put the cylindrical aluminum alloy raw material blank that has been preheated at high temperature Put it into the mold, extrude with a 30MN forging press, and hold the pressure for 15s to make a forging blank;

[0017] (5) Flaring: Take out the above-mentioned forgings and put them into a small-tonnage flaring press to com...

Embodiment 2

[0020] (1) Material preparation: Taking the 18-inch wheel hub as an example, cut the semi-solid alloy thixotropic aluminum alloy bar stock for the cylindrical forged hub into a billet with a diameter of 600mm;

[0021] (2) Cleaning: clean the billet to remove surface impurities such as oil stains;

[0022] (3) Blank preheating: heat the cut blank to 595°C in 30 minutes and keep it warm for 1 hour;

[0023] (4) Forging: Before forging work, preheat the mold to 450°C in 20 minutes, separate the upper mold and lower mold, spray lubricant on the working surface of the mold, and put the cylindrical aluminum alloy raw material blank that has been preheated at high temperature Put it into the mold, extrude it with a 30MN forging press, and hold the pressure for 20s to make a forging blank;

[0024] (5) Flaring: Take out the above-mentioned forgings and put them into a small-tonnage flaring press to complete the above-mentioned forgings' flaring;

[0025] (6) Spinning forming: On th...

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PUM

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Abstract

The invention relates to a rotary swaging forming method for automobile aluminum alloy wheel hubs. By utilizing the capability of deformation allowance of a material under a certain temperature, and by the aid of the rotary swaging forming method, an aluminum alloy material is forced to form a shape according to a preset mould shape. The rotary swaging forming method includes: preparing a rough material, cleaning, preheating the rough material (enabling the rough material to be semi-solid), forging and pressing to form a shape, expanding an opening, and rotating and pressing to form a shape. The automobile aluminum alloy wheel hubs manufactured by the rotary swaging forming method are high in yield and stable in mechanical property, mechanical processing quantity and energy consumption for the wheel hubs are obviously lowered, raw material is saved, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of automobile manufacturing, and in particular relates to an aluminum alloy automobile wheel hub forging and spinning method. Background technique [0002] As limited energy resources are decreasing year by year and energy prices are rising, in order to reduce fuel consumption, the lightweight design of automobiles has been highly valued. Aluminum alloy wheels are usually produced by casting or die-casting. Conventional casting methods, whether it is differential pressure casting, low-pressure casting or gravity casting, all cause the mold cavity to The gas cannot be exhausted, which leads to the lack of compact structure of the product blank, which is prone to loose, pinch and other casting defects. The manufacturing cost is high, and the consumption of energy and raw materials is large. The mechanical property of product and the surface quality of casting also can't be satisfactory. [0003] Conventional aluminum ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/40B21D22/16B21J5/02
Inventor 金刚
Owner 金刚
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