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Aluminum alloy hub spinning casting process

An aluminum alloy wheel hub and casting process technology, applied in the field of metal casting, can solve the problems of low product strength, extrusion deformation, easy extrusion and peeling, etc., to reduce product deformation and extrusion defects, reduce product peeling and cracks Defects, the effect of reducing rim defects

Inactive Publication Date: 2020-04-17
DARE WHEEL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the production of spinning casting, due to the high temperature of the spinning blank, the product strength is low during spinning, resulting in extrusion deformation; when the temperature of the spinning part is low or the feed rate is not designed properly, it is easy to extrude, peel or produce cracks

Method used

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  • Aluminum alloy hub spinning casting process
  • Aluminum alloy hub spinning casting process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A spinning casting process for an aluminum alloy wheel, comprising the following steps:

[0021] A. Inject aluminum water into the cavity of the mold, spin out the rim blank after casting the wheel disc, cool down, demould, and carry out spinning casting. During the cooling treatment, the blank is preheated at 410°C, and the front side of the blank after being released from the furnace Cool in water at 45°C for 4 seconds, the rim body does not enter the water, and cool in the air. When the mold temperature is 200°C, the front surface temperature of the blank is 180°C, and the rim blank is 360°C, start spinning; the feed speed is set to 1.0mm / rotation ;

[0022] B. Remove the blank gate;

[0023] C. Heat treatment of the casting blank;

[0024] D. Surface shot blasting of the blank;

[0025] E. Machining the blank;

[0026] F, the surface is painted or electroplated.

[0027] The physical property data of table 1 gained wheel hub product

[0028]

[0029]

Embodiment 2

[0031] A spinning casting process for an aluminum alloy wheel, comprising the following steps:

[0032] A. Inject aluminum water into the cavity of the mold, spin out the rim blank after casting the wheel disc, cool down, demould, and carry out spinning casting. During the cooling process, the blank is preheated at 430°C, and the front side of the blank after being released from the furnace Cool in 50°C water for 5 seconds, the rim body does not enter the water, and cool in the air. When the mold temperature is 220°C, the front surface temperature of the blank is 200°C, and the rim blank is 380°C, start spinning; the feed speed is set to 1.1mm / rotation ;

[0033] B. Remove the blank gate;

[0034] C. Heat treatment of the casting blank;

[0035] D. Surface shot blasting of the blank;

[0036] E. Machining the blank;

[0037] F, the surface is painted or electroplated.

[0038] The physical property data of table 2 gained wheel hub product

[0039] serial number ...

Embodiment 3

[0041] A spinning casting process for an aluminum alloy wheel, comprising the following steps:

[0042] A. Inject aluminum water into the cavity of the mold, spin out the rim blank after casting the wheel disc, cool down, demould, and carry out spinning casting. During the cooling treatment, the blank is preheated at 450°C, and the front side of the blank after being released from the furnace Cool in 55°C water for 6 seconds, the rim body does not enter the water, and cool in the air. When the mold temperature is 240°C, the front surface temperature of the blank is 220°C, and the rim blank is 400°C, start spinning; the feed speed is set to 1.2mm / rotation ;

[0043] B. Remove the blank gate;

[0044] C. Heat treatment of the casting blank;

[0045] D. Surface shot blasting of the blank;

[0046] E. Machining the blank;

[0047] F, the surface is painted or electroplated.

[0048] The physical performance data of the hub product made in table 3

[0049] serial num...

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Abstract

The invention belongs to the technical field of metal casting, and relates to an aluminum alloy hub spinning casting process. The process comprises the steps: injecting molten aluminum into a mold cavity, spinning a rim blank out after a wheel disc is cast; carrying out cooling treatment, demolding, and carrying out spinning casting, wherein during the cooling treatment, the blank preheating temperature is 410-450 DEG C, the front surface of the blank is cooled in water at the temperature of 45-55 DEG C for 4-6 s after being discharged from the furnace, no water enters a rim body, the rim bodyis cooled in air, and spinning is started when the temperature of the mold is 200-240 DEG C, the temperature of the front surface of the blank is 180-220 DEG C and the temperature of the rim blank is360-400 DEG C; removing a blank sprue; and carrying out heat treatment, surface shot blasting, machining and surface coating or electroplating treatment on the blank. An optimized cooling method is adopted for the spinning blank, so that the temperatures of all parts of the blank are different, the blank is more suitable for the spinning process, and product deformation and extrusion defects areeffectively reduced; and the proper feeding speed is designed, the rim defects of the product are reduced, and the skin pulling and crack defects of the product can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of metal casting, and relates to the casting of an aluminum alloy wheel hub, in particular to a spinning casting process of an aluminum alloy wheel hub. Background technique [0002] The forming processes of aluminum alloy wheels include gravity casting, low-pressure casting, squeeze casting, semi-solid casting, forging, spinning, and combinations of the above-mentioned processes. Squeeze casting and semi-solid casting technology can improve the metallographic structure of materials and improve the mechanical properties of products, especially suitable for manufacturing large-scale, lightweight aluminum wheels; spinning forming technology is a plasticity developed on the basis of hot forging technology. Deformation processing technology, after the aluminum wheel is forged into a billet, it is formed by a spinning process. The mechanical properties of the aluminum wheel produced by the process technology are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 何芳何国元张伟斌裔国宇
Owner DARE WHEEL MFG
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