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Method for producing light alloy vehicle wheel

A manufacturing method and light alloy technology, applied to wheels, vehicle parts, transportation and packaging, etc., can solve the problems of difficulty in manufacturing wheels, uneven thickness, etc., and achieve the effect of small metal structure, small crystal grain size and excellent mechanical properties

Inactive Publication Date: 2011-06-08
RAYS ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, even with the upsetting process, it is extremely difficult to manufacture a stable vehicle wheel because of uneven thickness due to buckling, etc., when the material height of the cylindrical forging material is high.

Method used

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  • Method for producing light alloy vehicle wheel
  • Method for producing light alloy vehicle wheel
  • Method for producing light alloy vehicle wheel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] In Example 1, an aluminum forged wheel having a rim diameter of 17 inches was manufactured.

[0038] First, a flat square billet made of aluminum alloy (A6061) having a rectangular cross-section of 80 mm in length and 300 mm in width was produced using semi-continuous casting equipment in which the mold outlet shape is approximately rectangular. In addition, the crystal grains of this flat square billet were measured, and it was confirmed that the average crystal grain diameter of the crystal grains was 95 μm. Then, the length in the longitudinal direction (casting direction) is cut to 290 mm, and the burrs on the cut surface are removed, and the appearance surface is cut with a cutting amount of 1 mm, thereby making a length of 290 mm, a width (horizontal length) ) 300mm, thick (longitudinal) 79mm, flat rectangular casting material weighing about 18kg.

[0039] Then, as a hot forging process, the flat rectangular casting raw material is put into a heating furnace, the...

Embodiment 2

[0042] In Example 2, an aluminum forged wheel having a rim diameter of 20 inches was manufactured.

[0043] In this Example 2, a flat square billet (average crystal grain size: 100 μm) was produced with a length of 150 mm in length and a width of 300 mm, and the length in the longitudinal direction (casting direction) was cut to 290 mm. The burrs on the cut surface were removed, and the appearance surface was cut with a cutting amount of 1 mm, thereby making a flat rectangular casting material with a length of 290 mm, a width (horizontal length) of 300 mm, a thickness (longitudinal length) of 149 mm, and a weight of about 35 kg. Except for this, in Example 2, the same steps as in Example 1 were performed to obtain a vehicle wheel made of an aluminum alloy.

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Abstract

The present invention provides a method for producing a light alloy vehicle wheel in which grain size of metal structure is still small and mechanical characteristics are still excellent even when diameter of the vehicle wheel is great. In the method for producing the light alloy vehicle wheel, firstly, a flat square billet (S1) is prepared by continuous casting or semi-continuous casting using a mold whose mold outlet port is formed into a substantially rectangular shape, the flat, square billet is then cut off at a right angle to a casting direction so as to flatly form a rectangular casting material in the casting direction. Furthermore, the casting process includes a step (S4) of pressing down the rectangular casting material from a flat surface side of the rectangular casting material to forge the rectangular casting material into a disc shape, and a step (S5) of forging the disc-shaped forging product into a rough wheel shape having a disc portion and a rim portion.

Description

technical field [0001] The present invention relates to a method of manufacturing a vehicle wheel made of a light alloy capable of having excellent mechanical properties even for a large-diameter wheel. Background technique [0002] As one of the methods for manufacturing vehicle wheels made of light alloys, there is known a forging method for manufacturing vehicle wheels made of light alloys by forging casting raw materials. Roughly describe the manufacturing method, such as image 3 As shown, first, a round bar billet is produced by semi-continuous casting using a casting mold having a circular mold outlet (S11), and the round bar billet is cut into discs to produce a cylindrical casting material (S12). Then, as a hot forging process, the cylindrical casting raw material is heated (S13), the casting raw material is pressed from the round surface side of the heated cylindrical casting raw material, and the casting raw material is forged into a disc shape (S14), The disc-sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21K1/28B21J1/02
CPCB22D11/00B21K1/28
Inventor 稻谷修二郎
Owner RAYS ENGINEERING