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Automobile saddle opening end cover machining method through inner ring surface induction quenching hardening

A technology of induction hardening and processing methods, which is applied in the field of auto parts, can solve the problems of complex replacement process of the open end cover of the worn saddle, high contact pressure, insufficient oil lubrication, etc., to reduce deformation of parts, improve hardness, and improve heating efficiency effect

Active Publication Date: 2020-02-11
DONGFENG COMML VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the running of the vehicle, due to the high contact pressure between the inner surface of the saddle open end cover and the trailer pin shaft, insufficient oil lubrication, bumpy road conditions, etc., it will cause serious wear on the inner surface of the saddle open end cover, and the compensation rate is relatively low. High, and the process of replacing the open end cover of the worn saddle is more complicated, labor-intensive and costly

Method used

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  • Automobile saddle opening end cover machining method through inner ring surface induction quenching hardening
  • Automobile saddle opening end cover machining method through inner ring surface induction quenching hardening
  • Automobile saddle opening end cover machining method through inner ring surface induction quenching hardening

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 Shown is the open end cover of the automobile saddle of this embodiment, and the material is 40Cr. Such as figure 2 Shown is the induction hardened area of ​​the inner surface of the open end cap of an automotive saddle.

[0031] The method for processing the opening end cover of the automobile saddle with the induction quenching and hardening of the inner ring surface in this embodiment includes the following steps: first, forging the 40Cr blank, and then performing quenching and tempering treatment on the blank, and the specific process of quenching and tempering is: heat preservation at 820°C 2h, water quenching, then high temperature tempering, tempering temperature 520°C, heat preservation 1.2h, the hardness of the blank after quenching and tempering is controlled at 28HRc, and then the blank is machined to obtain the opening end cover 1 of the automobile saddle, and then the automobile saddle The end cover 1 of the seat opening is strengthened ...

Embodiment 2

[0037] Such as figure 1 Shown is the open end cover of the automobile saddle of this embodiment, and the material is 42CrMo. Such as figure 2 Shown is the induction hardened area of ​​the inner surface of the open end cap of an automotive saddle.

[0038] The method for processing the opening end cover of the automobile saddle with the induction quenching and hardening of the inner ring surface in this embodiment includes the following steps: first, forging the 42CrMo blank, and then performing quenching and tempering treatment on the blank, and the specific process of quenching and tempering is: heat preservation at 870°C 2h, water quenching, then high temperature tempering, tempering temperature 570°C, heat preservation 2h, the hardness of the blank after quenching and tempering is controlled at 33HRc, then the blank is machined to obtain the opening end cover 1 of the automobile saddle, and then the automobile saddle The open end cap 1 is strengthened by scanning inducti...

Embodiment 3

[0044] Such as figure 1 Shown is the open end cover of the automobile saddle of this embodiment, and the material is 40CrMo. Such as figure 2 Shown is the induction hardened area of ​​the inner surface of the open end cap of an automotive saddle.

[0045] The method for processing the opening end cover of an automobile saddle with induction quenching and hardening on the inner ring surface of this embodiment includes the following steps: first, forging the 40CrMo blank, and then performing quenching and tempering treatment on the blank. The specific process of quenching and tempering is: heat preservation at 850°C 1.2h, water quenching, then high temperature tempering, tempering temperature 550°C, heat preservation 1.5h, the hardness of the blank after quenching and tempering is controlled at 30HRc, and then the blank is machined to obtain the automobile saddle opening end cover 1, and then the automobile saddle opening end cover 1 is obtained. The saddle opening end cover ...

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Abstract

The invention discloses an automobile saddle opening end cover machining method through inner ring surface induction quenching hardening. The method comprises the following steps that 1), a blank is forged for forming; 2), the blank treated in the step 1) is subjected to thermal refining; and 3), the blank treated in the step 2) is machined to be an automobile saddle opening end cover, and finallyscanning induction quenching strengthening is carried out. According to the method, by adopting scanning type induction quenching, quenching strengthening is carried out on the inner surface of the saddle opening end cover, the hardness of the inner surface can be remarkably improved, and meanwhile, the overall toughness of the part is maintained.

Description

technical field [0001] The invention belongs to the technical field of auto parts, and in particular relates to a method for processing an opening end cover of an auto saddle with induction quenching and hardening of an inner ring surface. Background technique [0002] The open end cover of the automobile saddle is a key component in the saddle assembly of the tractor. It is in direct contact with the pin shaft connected to the trailer. Cause wear failure in the contact area between the two and even fatigue failure of the entire part. Therefore, it is required that the overall toughness of the open end cover of the saddle is better and the inner surface of the open end cover has better wear resistance. At present, the production process of the saddle open end cover includes the following three processes: forging forming-quenching and tempering heat treatment-finishing. Among them, the quenching and tempering heat treatment link plays the most critical role in ensuring the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/10C21D1/25C21D1/667C21D9/00
CPCC21D1/10C21D1/25C21D1/667C21D9/0068Y02P10/25
Inventor 余金科牛恩来赵俊平樊晓光
Owner DONGFENG COMML VEHICLE CO LTD
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