the safety lock of green laser pointer is easy enough for the customer

At the same time the use of the safety lock of    green laser pointer   is easy enough for the customer
Usually have a higher absorption capacity on the laser coating pretreatment. In this regard, Changchun Institute of Optics, Tsinghua University and other units have done a lot to explore. In recent years, Shanghai University of Engineering [7] to the photothermal conversion material (referred to as absorption spectral emissivity of the coating) and laser transformation hardening area, the development of new light and heat of the metal oxide-based mixed oxide conversion materials. Of the material on the absorption rate of 90% or more of the CO2 laser, with good process performance, quick drying, non-irritating odor and laser processing, anti-spray, etc., there is a good application value. The customer should have the strong safety sense when they use  green laser pointer  .
Huazhong University of Science [8] compared two photothermal conversion material - phosphate film with some units using silica colloidal coatings, the following results: ① silica colloid coating photothermal conversion efficiency is better than the phosphate film; 2 due to chemical reaction between the substrate and phosphating solution caused by the surface roughness increases, and the low melting point brittle eutectic phase formed between the phosphorus and iron, causing intergranular micro-cracks in the hardened layer. Better than the quality of the hardened layer of SiO2 colloidal phosphate film; ③ The silica coating process is simple, and pollution-free flexibility. From the current point of view, the industrial applications of laser transformation hardening can not be separated using the appropriate photothermal conversion material. Especially for the small power type       laser pointer  .
How to ensure that large quantities of industrial applications, the process of coating the stability of the photothermal conversion material, uniformity and detectability and further reduce production costs, and further work needs to be done. Laser plus conventional composite processing. Laser heat treatment is a new technology, there are very obvious characteristics, but also the scope of application of laser heat treatment with conventional heat treatment technology skillfully combine the complementary advantages, obviously is a very good idea. Beijing University of Aeronautics and Astronautics [9], ductile iron materials using laser surface remelting processing, and then annealed at 750 ° C graphitization, rapid solidification of the eutectic cementite metastable phase into graphite, the system had succeeded in containing both hard wear-resistant rapid solidification of the eutectic cementite, with dispersion of graphite wear a new iron-based multiphase materials. When producing, assembling and commissioning    green laser    is performed.
By changing the annealing time to adjust the relative amounts of cementite and graphite. Coupled with a graphite self-lubricating Since cementite better wear resistance, tribological materials. The first of Changchun of Optics and Fine Mechanics Institute [10] 18Cr2Ni4WA steel carburization, the carbon gradient distribution, then the laser transformation processing. The effect of combined treatment, the hardened layer is divided into three zones: the first is the surface completely hardened District, the outermost surface of the needle-like martensite + cementite + retained austenite, sub-surface for the needle-like martensite lath martensite + retained austenite; Zone transition layer consists of martensite and tempering carbide precipitation composition; third area for high-temperature tempering zone, consisting of tempered sorbite.    usa green laser pointer    is for irradiation and protection purpose.
Along with economic development, the performance requirements of the mechanical parts are many and varied, using a heat treatment process is often difficult to solve the problem. Composite heat treatment technology, market demand, there will be a certain degree of growth. The laser shock processing (LSP) is the main use of the mechanical effects resulting from the interaction of intense laser surface - strong stress wave to improve the material properties. This technique can effectively strengthen steel, aluminum, titanium, nickel and other metal materials, especially the 2024T3 aluminum alloy by laser shock processing, fatigue life is increased by 4 times. In recent years, to carry out research on laser shock processing from three aspects: ① The laser shock processing on the metal properties and engineering applications; ② laser shock processing on the micro mechanism; (3) laser shock processing strengthening effect of non-destructive testing. After the charging of the battery of     green laser pointer   is finished.