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Technology for precisely controlling thickness of quenching layer of automobile wheel-shaft piston cover cap

A technology of precise control and quenching layer, applied in the field of quenching process, can solve the problem of hardened layer that cannot meet the requirements of holes, and achieve the effect of easy automation, good working conditions and high heat treatment quality.

Inactive Publication Date: 2014-12-24
SHANGHAI UNIV OF ENG SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the ordinary quenching method cannot meet the requirements of the hardened layer of the hole, so it is necessary to design a new quenching process to make up for this defect

Method used

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  • Technology for precisely controlling thickness of quenching layer of automobile wheel-shaft piston cover cap
  • Technology for precisely controlling thickness of quenching layer of automobile wheel-shaft piston cover cap
  • Technology for precisely controlling thickness of quenching layer of automobile wheel-shaft piston cover cap

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Embodiment

[0026] The process of precisely controlling the thickness of the quenched layer of the piston cover of the automobile wheel axle, the assembly diagram is as follows Figure 1-2 shown, including the following steps:

[0027] (1) Fix the position of the automobile axle piston cover 1 by using the clamp composed of the chuck 2 and the base 3, put the large-diameter inductor effective coil 44 on the upper end of the inner hole of the automobile axle piston cover 1, and The upper end surface of the hole is quenched to form a hardened layer with a depth of 1-2mm;

[0028] (2) turn over the automobile wheel shaft piston cover 1, select the effective coil 44 of the inductor matching the outer surface diameter of the automobile wheel shaft piston cover 1 to quench the other end face of the hole, and quench the liquid in the base 3. The quenched side in step (1) is immersed in the quenching liquid, so that the heat of the effective coil of the inductor will not affect the hardened laye...

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Abstract

The invention relates to a technology for precisely controlling the thickness of a quenching layer of an automobile wheel-shaft piston cover cap. The technology comprises: firstly putting a large-diameter inductor effective coil on the upper end of an inner hole of the automobile wheel-shaft piston cover cap, and performing quenching processing on the upper end face of the inner hole to form a hardening layer; overturning the automobile wheel-shaft piston cover cap, selecting an inductor effective coil matched with the diameter of the outer surface of the automobile wheel-shaft piston cover cap to perform quench on the other end face of the hole, immersing the quenched face into a quenching solution, so as to enable the heat of the inductor effective coil to not cause influence. Compared with the prior art, the technology has the advantages of energy saving, high efficiency, automation convenience, good working conditions, high heat treatment quality and the like. Practical production and examination prove that the quenching technology is capable of guaranteeing the quality and the hardness requirement of the part.

Description

technical field [0001] The invention relates to a quenching process, in particular to a process for precisely controlling the thickness of a quenched layer of an automobile axle piston cover. Background technique [0002] During the production of the piston cover of the automobile wheel shaft, the selection of the positioning datum has a great influence on the guarantee of the machining accuracy and the complexity of the fixture structure. When considering the positioning scheme, the number and direction of the degrees of freedom that should be limited should be determined according to the accuracy requirements of the workpiece and the content of the process. Then choose a good set as a benchmark, and consider the required positioning components. Under normal circumstances, the positioning reference has been determined by the craftsman when the process specification is formulated. Therefore, it is only necessary to analyze the correctness of the selection of the positionin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/10C21D9/00C21D1/42C21D1/667
CPCY02P10/25
Inventor 宋新萍王佼郝雯婧张建春
Owner SHANGHAI UNIV OF ENG SCI
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