How to treat the surface of laser hardening from Wallis Lucy's blog

The laser-treated surface makes the workpiece more resistant to load. Laser quenching, melting and coating improve the load-bearing capacity of the workpiece. Improve the hardness and toughness, change the surface structure and generate pressure tension or protective coating on the surface. Laser marking and laser pointer 5000mw micromachining can also change the surface of the workpiece. The principle of laser quenching: the laser beam heats the surface of the metal and quenches it to increase its hardness. The advantage of laser hardening technology is that it can process irregular 3D workpieces, with few follow-ups. Due to the extremely low heat input, the deformation of the workpiece is very small, reducing further processing or even no further processing.

What is an excimer laser?

A gas laser that uses a mixed gas of rare gas and halogen gas as the medium and is mainly excited by pulse discharge. Representative examples include ArF excimer laser (wavelength 193nm), krypton fluoride (KrF) excimer laser (wavelength 248nm), and other XeCl excimer lasers (wavelength 308nm) capable of emitting deep ultraviolet (DUV) light with strong light intensity ), XeF excimer laser 20000mw (wavelength 351nm). Excimer laser, as a laser in the ultraviolet region, has the characteristics of high-efficiency excitation and relatively small device. It is suitable for use as a light source for cutting-edge semiconductor exposure equipment that requires high resolution. It is also used in various fields such as industry and medical treatment (laser myopia correction surgery such as LASIK).

Why is the laser pointer restricted?

Initially, red laser pointer were used to point charts and projector images in presentation and educational environments. Lightweight, easy to carry, it can be used even in dark places, and it has the advantage of being able to point to a long distance that the pointer cannot reach. It is said that its application range is expanding. Using an ordinary laser pointer, the range of light is 100 to 200 meters. It is very likely that illegal high-power lasers have been used in criminal activities. The Osaka and Kyoto Prefectural Police Departments, which learned that such illegal products are sold on the Internet, have launched investigations.

In the past, laser pointers have had a series of problems in Japan and overseas, such as accidents in which children accidentally irradiated their eyes and spectators irradiated athletes with light during sporting events. To this end, the 2001 Consumer Product Safety Act stipulated it and formulated safety standards to limit the output power of products sold to less than 1 milliwatt. However, there is no law that regulates personal use or possession of high-power laser pointers. The current situation is that the behavior of obtaining through overseas websites, like the one caught this time, has not been punished.