Shaping method of bimetallic composite-material brake drum

A technology of composite materials and forming methods, which is applied in the forming field of brake drums, can solve the problems of poor thermal fatigue resistance, fracture and scrapping, and easy fatigue, etc., and achieve the effects of weight reduction, increased joint surface, and high interface joint quality

CN102601337AInactive Publication Date: 2012-07-25HENAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-07-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a shaping method of a bimetallic composite-material brake drum, and relates to the shaping method of the brake drum. The shaping method includes the steps of manufacturing a brake drum jacket with a waved circumferential pipe wall by using a low carbon steel pipe, placing the brake drum jacket in a horizontal centrifugal casting machine, and pouring molten iron at a certain temperature, thus finishing casting in the casting machine and finally obtaining the brake drum compositing two metal materials of low carbon steel and cast iron. The brake drum compositing two metal materials manufactured according to the shaping method provided by the invention can fully bring respective advantages into play, is high in combination quality of an interface, and light in weight.
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Description

technical field

[0001] The invention relates to a forming method of a brake drum, in particular to a forming method of a bimetal composite material brake drum. Background technique

[0002] With the vigorous development of the transportation industry, it has injected vitality into the automobile industry. The development of the automobile industry provides a huge development space for the development of auto parts, especially foundry enterprises. Brake drum, as the main wear and tear part in the automobile braking system, has a huge market demand due to its advantages of compact structure, reliable performance and high braking power.

[0003] There are mainly two types of materials for brake drums currently on the market, one is cast iron, which is used for large and medium-sized vehicles; the other is aluminum-based composite materials, which are mainly used for small vehicles. Cast iron is used as the material of most vehicle brake drums mainly because of its good castin...

Examples

Embodiment Construction

[0016] A method for forming a brake drum made of bimetallic composite material, the process is as follows: First, a low-carbon steel (08 steel or 10 steel) steel pipe with a wall thickness of 8mm is punched to form a brake drum jacket with a wavy circumferential wall, and the The wall thickness of the completed brake drum jacket is 5mm, the height is 270mm, and the maximum outer diameter is 400mm; then the molten iron is melted, and the molten iron is kept warm at 1380~1390°C; the low carbon steel brake drum jacket is placed in a horizontal centrifugal In the casting machine, and control the rotating speed of the horizontal centrifugal casting machine to 750~980r / min, after the brake drum cover is preheated to 900°C, then pour molten iron into the brake drum cover, and the rotation of the casting machine Casting is completed in the middle, the amount of molten iron is 5780~5860cm 3 , the process of casting molten iron is guaranteed to be completed within 10 minutes to prevent ...