Automobile brake disc and manufacturing method thereof

A technology of automobile brakes and raw material iron, applied in the direction of brake discs, mechanical equipment, brake types, etc., to achieve the effects of improving heat dissipation, reducing costs, and high performance

Inactive Publication Date: 2013-08-28
宁波精磊汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to increase the wear resistance, boronizing technology can now be used, but this technology can only be used in the field of low carbon steel

Method used

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  • Automobile brake disc and manufacturing method thereof
  • Automobile brake disc and manufacturing method thereof

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Embodiment Construction

[0026] The embodiments of the present invention are described in detail below, and these embodiments are only used to explain the present invention, but not to be construed as limiting the present invention.

[0027] refer to figure 2 , the present invention is achieved through the following technical solutions:

[0028] An automobile brake disc, the appearance of the brake disc 3 is the same as that of the prior art brake disc 1, and the flow direction of the internal fins 4 of the brake disc is spirally twisted from the center to the edge; the spiral twist is adopted Kimedean spiral structure.

[0029] The material of the automobile brake disc is vermicular graphite cast iron; the outer surface of the brake disc is treated with boronizing.

[0030] A kind of preparation method of automobile brake disc:

[0031] 1) Select raw iron; the weight percent of each element in the raw iron is 3.6-3.8% carbon, less than 1.2% silicon, less than 0.04% sulfur, 0.3-0.9% manganese, 0.0...

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PUM

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Abstract

The invention relates to an automobile brake disc and a manufacturing method thereof. The appearance of the automobile brake disc is same with that of the brake disc in the prior art. The automobile brake disc is characterized in that the rotating direction of a fin in the brake disc is in spiral torsion from the center to the edge, and the spiral torsion is of an Achimedean spiral structure. Thematerial of the automobile brake disc is compacted graphite iron, and the outer surface of the brake disc is subjected to boronizing treatment.

Description

technical field [0001] The invention relates to the field of casting engineering materials, in particular to an automobile brake disc and a preparation method thereof. Background technique [0002] The fins 2 of the brake disc 1 used at the present stage are straight spokes, such as figure 1 As shown, the brake gas dissipates quickly through these fins, and the heat taken away is limited, which will cause a large amount of heat generated during braking to accumulate at the brake disc, which will have a thermal effect on the brake disc and reduce the life of the brake disc. [0003] At the same time, the brake discs used at this stage are generally made of gray cast iron. The manufacturing method of gray cast iron is simple and easy to produce, but gray cast iron also has serious defects, that is, weak processing ability, low tensile strength and poor shear stress. Therefore, the brake disc made of gray cast iron is easy to crack, has low comprehensive thermal fatigue resis...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/12F16D65/84C23C8/70C23C8/40C22C37/10C22C37/00
Inventor 俞其平
Owner 宁波精磊汽车零部件有限公司
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