When the receivers USB interfaces of green laser pointer

When the receivers USB interfaces of green laser pointer are inserted into the computer cases. 
Such as: laser plastic deformation of quenched management, laser ultrasonic hardening, laser hardening in liquid nitrogen: laser plastic deformation hardening (LPDH) a combination of two processes

in one laser hardened and thermoplastic deformation hardening. Such combination of the following advantages: first, available with the special structure of the laser hardened layer; Second, get

help to improve the fatigue strength and wear resistance of to ensure that a comprehensive stress. The plastic deformation is caused by the roller in the surface of laser irradiation process. From

the process of research and analysis of the results obtained the following two conclusions: 1) LPDH is a method to improve the fatigue strength of machine components and resistance to wear and tear

in terms of promising. When green laser pointer are produced.
Compared with the laser hardened, LPDH microhardness higher 1500MPa, the depth of the hardened layer depth of 100-200? M. (2) laser ultrasonic hardening (of LUSH) laser irradiation in the

ultrasonic frequency vibration plastic deformation combined. This combination can make microhardness 3000 ~ 4000MPa, the surface morphology is also the result of such processing can be improved.

Laser liquid hard (LHLN), in liquid nitrogen. In the process, due to the large temperature gradient can improve the heat exchange of the irradiation zone, and can cause nitrogen to better penetrate

into the matrix material conditions, and significantly increase the microhardness of the material being processed, as shown in Table 1 below. 5.5 new laser absorption coating. We have matched their

frequency of green laser pointer for users.But the laser will produce smoke and odor, difficult to clear. In recent years, the United States with more than a grade Krylonl602 black lacquer, the main ingredients of the graphite powder and

sodium silicate or potassium silicate, spray method, the thickness of 10 ~ 20? M,. Domestic-ray machine developed by a 86-l black lacquer, has been supplying the domestic market. 2) phosphating

method) Figure 5-phosphate film after laser treatment and the role of the workpiece to indicate phosphating processing sub-high phosphate (90 ~ 98 ° C) temperature (55 ~ 70 ° C) and room

temperature phosphating Phosphide (approximately 25 ° C ).