Laser quenching device and technology thereof

Abstract

The invention discloses a laser quenching device which comprises a working table and a laser assembly disposed above the working table, wherein the laser assembly comprises a laser, a beam expander, agalvanometer and an F-Theta lens arranged in sequence in a beam transmission direction. The multi-dimensional dynamic galvanometer ensures that light spots cannot be distorted within an effective range; the software control is accurate, the quenching depth can be precisely controlled, and the laser output energy, a scanning path and the like can be precisely controlled, so that an internal crystal structure is more refined, a hot deformation zone of a probe and the overall change are small, the product consistency and the yield rate are greatly improved, the hardness is increased by 15% to 20% compared with that of the conventional quenching, and the wear resistance can be increased by 3-4 times; no relatively long-term pretreatment and heating of the conventional method are required; theenergy consumption is reduced; laser-scanned probes do not need to be immersed in anti-rust oil, thereby reducing secondary pollution; and the laser quenching device is short in process cycle, high in production efficiency and low in cost, can be incorporated into a production line, and facilitates mass production.

Description

technical field [0001] The invention relates to the field of metal heat treatment, in particular to a laser quenching device and a laser quenching process for probes. Background technique [0002] During the heat treatment of the probe, in order to increase the hardness of the product, a quenching process is required. The quenching link in the current probe production is handled by the traditional method: wrap the product with tin foil (the purpose of wrapping is to prevent the product from oxidizing), and then put it in a quenching furnace and heat it to more than 1,000 degrees (this heating takes a certain time ), then keep the high temperature for a few minutes, then remove the tinfoil, pour the product into the anti-rust oil for cooling (the cooling process takes a certain period of time), take it out after the product cools to room temperature, and then put it in the vacuum tempering furnace for a few minutes Hours (the temperature of the tempering furnace is about 300...

AI Technical Summary

Problems solved by technology

[0003] 1. The efficiency is low, and it takes a long time to heat up and cool down;

[0004] 2. No energy saving, because the quenching furnace needs to be raised to a higher temperature, the consumption of electric energy is huge, the process of heating and cooling takes a long time and consumes a lot of energy;

[0005] 3. Unsafe, due to the high temperature of the quenching furnace, the operation should be extra careful;

[0006] 4. It is not environmentally friendly. After the temperature rise is completed, the probe needs to enter the anti-rust oil, which is easy to cause secondary pollution to the environment;

[0007] 5. The heat input is uncontrollable, and the product will have a large deformation, which will affect the yield rate;

[0008] 6. The production operation requires more labor and the degree of automation is not high

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