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Laser Quenching Method for Automotive Vacuum Pump Rotor

A technology of laser quenching and vacuum pump, applied in the field of laser quenching, which can solve the problems of difficult control of hardened layer depth, environmental pollution of quenching liquid, long quenching cycle, etc., and achieve the effects of difficult control of hardness depth, low cost and short processing cycle

Active Publication Date: 2018-01-26
SHANGHAI NOVARE AUTOMOTIVE COMPONENTS
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the surface quenching of auto parts, especially the surface quenching of automotive vacuum pump rotors, adopts the traditional induction hardening method. The traditional induction hardening method has large deformation, the depth of hardened layer is not easy to control, and the metallographic structure is poor, which is prone to tissue defects and quenching. Cracks, the entire quenching process consumes a lot of energy, the quenching cycle is long, and the quenching liquid is likely to pollute the environment

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  • Laser Quenching Method for Automotive Vacuum Pump Rotor
  • Laser Quenching Method for Automotive Vacuum Pump Rotor
  • Laser Quenching Method for Automotive Vacuum Pump Rotor

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0029] In this embodiment, the laser quenching method for the automotive vacuum pump rotor provided by the present invention includes the following steps:

[0030] Step S1: According to the material of the rotor and the surface position of the rotor to be hardened, set parameters such as laser power density, heating time, and scanning speed. The laser beam can quickly harden the surface of the rotor without affecting the size and toughness of the rotor. During the laser quenching process, the effe...

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Abstract

The invention provides a laser quenching method for an automobile vacuum pump rotor. The laser quenching method includes the steps of S1, carrying out laser quenching treatment on the surface of the rotor through laser beams and monitoring the temperature of the surface layer of the rotor; S2, stopping irradiation by the laser beams when the temperature of the surface layer of the rotor reaches the temperature of the hardness phase transformation point; and S3, fast lowering the temperature of the surface layer of the rotor through heat conduction of the inner layer of the rotor and obtaining a laser quenched and hardened layer. According to the laser quenching method, the laser quenching treatment is carried out on the surface of the rotor through the laser beams, the temperature of the surface layer of the rotor is monitored, irradiation stops when the temperature of the surface layer of the rotor reaches the required temperature of the hardness phase transformation point, the surface layer of the rotor is fast cooled through fast heat conduction of cryogenic material inside the rotor, and then the laser quenched and hardened layer is obtained; and the problems that deformation of traditional induction quenching is large, structures are not uniform and quenching cracks are easily generated are solved, the service life of the rotor is prolonged, the machining cycle of the laser quenching technology is short, and the cost is low.

Description

technical field [0001] The invention relates to laser quenching of auto parts, in particular to a laser quenching method for an automotive vacuum pump rotor. Background technique [0002] At present, the surface quenching of auto parts, especially the surface quenching of automotive vacuum pump rotors, adopts the traditional induction hardening method. The traditional induction hardening method has large deformation, the depth of hardened layer is not easy to control, and the metallographic structure is poor, which is prone to tissue defects and quenching. Cracks, the entire quenching process consumes a lot of energy, the quenching cycle is long, and the quenching liquid is likely to pollute the environment. Contents of the invention [0003] Aiming at the defects in the prior art, the object of the present invention is to provide a laser quenching method for the rotor of an automobile vacuum pump. [0004] According to the laser quenching method of the automotive vacuum ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/10C21D9/00
CPCC21D1/10C21D9/0068Y02P10/25
Inventor 陈序张大名胡宏
Owner SHANGHAI NOVARE AUTOMOTIVE COMPONENTS
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