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High-carbon gray cast iron automobile brake disk and production method thereof

A technology of automobile braking and production methods, applied in the direction of brake discs, mechanical equipment, friction linings, etc., can solve the problems of unstable performance, easy damage, easy aging, etc., and achieve performance improvement, wear resistance and heat resistance Improved fatigue performance and strong heat storage capacity

Active Publication Date: 2013-07-31
河南淮海精诚工业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a new high-carbon gray cast iron automobile brake disc and its production method, so as to overcome the shortcomings of existing brake discs on the market such as non-wear resistance, easy aging, easy damage, and unstable performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: A high-carbon gray cast iron automobile brake disc, the chemical composition of the high-carbon gray cast iron automobile brake disc is as follows: C: 3.7% to 3.71%, Mn: 0.5% to 0.51%, Cu: 0.3% to 0.31%, Cr: 0.1% to 0.11%, Mo: 0.2% to 0.22%, Si: 1.6% to 1.62%, N: 0.1% to 0.12%, P: 0.01% to 0.03%, S: 0.05%~0.06%, the balance is Fe.

Embodiment 2

[0035] Embodiment 2: A kind of high-carbon gray cast iron automobile brake disc, the chemical composition ratio of the high-carbon gray cast iron automobile brake disc is as follows: C: 3.79%~3.8%, Mn: 0.78%~0.8%, Cu: 0.49% to 0.5%, Cr: 0.19% to 0.2%, Mo: 0.38% to 0.4%, Si: 1.98% to 2.0%, N: 0.19% to 0.2%, P: 0.11% to 0.12%, S: 0.11%~0.12%, the balance is Fe.

Embodiment 3

[0036] Embodiment 3: A high-carbon gray cast iron automobile brake disc, the chemical composition of the high-carbon gray cast iron automobile brake disc is as follows: C: 3.75%, Mn: 0.65%, Cu: 0.4%, Cr : 0.15%, Mo: 0.3%, Si: 1.8%, N: 0.15%, P: 0.05%, S: 0.08%, and the balance is Fe.

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PUM

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Abstract

The invention relates to a high-carbon gray cast iron automobile brake disk and a production method thereof. The high-carbon gray cast iron automobile brake disk comprises the following chemical components in percentage by weight: 3.7-3.8% of C, 0.5-0.8% of Mn, 0.3-0.5% of Cu, 0.1-0.2% of Cr, 0.2-0.4% of Mo, 1.6-2.0% of Si, 0.1-0.2% of N, 0.01-0.12% of P, 0.05-0.12% of S and the balance of Fe. The brake disk provided by the invention has the outstanding characteristics of small brake temperature rise, abrasion resistance, favorable heat fatigue resistance effect and the like; the performance of an automobile brake system can be obviously improved, and the service life can be obviously prolonged; and meanwhile, the potential safety hazard caused by ineffective brake due to high temperature can be effectively eliminated. Thus, the high-carbon gray cast iron automobile brake disk has high economic value.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a high-carbon gray cast iron auto brake disc and a production method thereof. Background technique [0002] The brake disc is a key part of the car brake and plays a vital role in the safe driving of the car. There are two types of failure of car brake discs, one is gradual wear failure, and the other is sudden rupture failure. And the situation of sudden rupture and failure is rare, most of the brake discs not only bear the normal force and tangential force of the brake block, but also bear the heat load when they are working. Under normal circumstances, the reason for the failure of the brake disc is due to the friction and wear caused by multiple braking during long-term use, which eventually leads to cracks or even cracks in the brake disc. At present, the brake discs of domestic automobile brake systems are mostly made of gray cast iron materials, that is, conventional gray cast ...

Claims

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Application Information

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IPC IPC(8): C22C37/06C22C33/08F16D69/02F16D65/12
Inventor 程利国
Owner 河南淮海精诚工业科技有限公司
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