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An annealing method of an automobile brake disc

A technology of automobile brakes and brake discs, which is applied in coatings, metal material coating processes, solid-state diffusion coatings, etc., can solve the problems of unstable parts quality, large changes in parts size, and low parts pass rate, and achieve a pass rate High, stable part size, uniform hardness

Active Publication Date: 2015-04-29
TONGFU HEAT TREATMENT KUNSHAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of the above-mentioned shortcoming of prior art, the object of the present invention is to provide a kind of annealing method of automobile brake disc, to solve the prior art for the annealing proc

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  • An annealing method of an automobile brake disc

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Embodiment Construction

[0023] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0024] It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not intended to limit the present invention Therefore, it has no technical substantive meaning, and any modification of structure, change of proportional relationship ...

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Abstract

An annealing method of an automobile brake disc is provided. The method includes putting an automobile brake disc to be treated into a heating furnace, adding nitrogen (N2) and methanol into the heating furnace, subjecting the automobile brake disc to heating treatment to allow the temperature of the automobile brake disc to reach a heating temperature, taking the automobile brake disc out of the heating furnace, putting the automobile brake disc into a cooling furnace, subjecting the automobile brake disc after the heating treatment to slow cooling treatment to ensure that the temperature of the automobile brake disc is lower than a cooling temperature, transferring the automobile brake disc to an air-exchange chamber, and subjecting the automobile brake disc to air exchange treatment in which oxygen in air is eliminated by utilization of nitrogen (N2) and methanol. The method ensures even heating of components, ensures that the components are cooled uniformly and slowly and free of oxidation, ensures full release of casting stress of the components and uniform hardness of the components after annealing, ensures that the hardness of the components does not change in a whole FNC process, and ensures stable dimensions and high yields of the components after the FNC.

Description

technical field [0001] The invention relates to a machining process, in particular to an annealing method for an automobile brake disc. Background technique [0002] Over the past ten years, with the rapid development of my country's automobile industry, various advanced heat treatment technologies centering on high quality, energy saving and environmental protection have been widely used in the production of automobile parts. Heat treatment is an important technical means for automotive products to obtain the required strength and toughness, and to achieve safer and more reliable products. At the same time, the quality of heat treatment is an important guarantee for the reliability, durability and safety of products. Especially for the surface heat treatment quality of auto parts, it will directly affect the process of localization of the auto industry, and also directly related to the stability and safety of auto handling. [0003] In the existing technology, the surface ...

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Application Information

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IPC IPC(8): C23C8/32C23C8/80
CPCC23C8/32C23C8/80
Inventor 顾晓文肖伟祥尤亦凡李丽萍
Owner TONGFU HEAT TREATMENT KUNSHAN