The rating current of green laser pointer is 250MA
Laser surface treatment technology, the characteristics of [3]. Means to select the laser wavelength to adjust the laser power and flexibility to the complex shape of the workpiece or the workpiece local part of the implementation of non-contact impatient heat, quench. The technology is easy to control range, small heat affected zone, residual stress and deformation of the workpiece is very small. Processing in the atmosphere, vacuum and atmosphere, constraints, and does not cause. Chemical contamination. Typically, the modification effect of laser surface treatment more than the ordinary approach. The laser beam focus on energy, density, speed, high efficiency and low cost. Can shorten the process, the workpiece can exercise in the treatment process, it is particularly suitable for organizing automated processing line. Before the raw material of green laser pointer is stored in the warehouse.
The laser beam is easy to input through the optical system and positioning also oriented more than one table can greatly improve the efficiency of utilization and processing of the laser. Laser surface treatment is especially suitable for large batch processing production line, its lower cost than traditional surface heat treatment. Laser surface phase transition of (of LTH). The laser beam is generated, such as household J laser beam heat source of a heated metal metal after laser heat treatment, generally do not appear unusual governance change. Transformation hardening is a child almost no dimensional changes of metallurgical phase transitions processing technology. Using a laser beam can choose a small area of heating and site hardening. Laser transformation hardening there are three basic conditions of benevolence. It is as the record of laser pointer .
First, the metal hardening district must reach the austenitizing temperature; second, hardening District heating and cooling cycle in the austenitizing temperature zones should be maintained long enough to ensure that the carbon can be fully diffusion; and third, should be large enough to self-quenching ability, the cooling rate should not exceed the critical cooling rate. Metallurgical changes in the metal by laser transformation hardening is different from ordinary quenching at the following points: the hardness is higher than the ordinary quenching of laser transformation hardening. Because on the one hand due to the formation of martensite in high suppression conditions, on the other hand due to the extremely fast heating and cooling rates so that the deformation martensite [4]. After the strict and careful incoming test of green laser have been finished.
Laser transformation hardening capacity depends on the materials being handled. Generally speaking, all suitable for general hardening materials for laser transformation hardening. Ordinary quenching of low carbon steel when the carbon content below 0.2% is generally difficult to hardening [5], laser transformation hardening can be extremely fast cooling rate is so hardened. Ordinary quenching of the graphite structure of cast iron is not easy also hardened, but the laser transformation hardening may it hardened, although in such a short diffusion time. Containing scattered spheroidal carbide steel or with a large number of graphite-free pearlitic cast iron, make it difficult to hardening due to the phase transition time is too short, laser transformation hardening. It is according to the specific procedure of producing green laser pointer .
Tool steel and high-speed steel laser surface hardening caused by the interest of many researchers [6]. Study the possibility of the the organization R6MS laser high temperature rapid hardening brover [13] using pulsed laser experiments show that, with different laser energy levels and the rate of heating and different original organization can get different levels and uniformity of the solid solution, resulting in optimize the value of the service conditions. The Mulin [14] l000J the laser to hardening 12X18N9T, tool steel 13N5A anvil A and 1201. 20 to 25 times of the laser hardening tool steel, the wear resistance of non-hardening tool, is four times with a surface coating of titanium nitride. The manufacturer should select the suitable and appropriate supplier of the raw material of green laser pointer .
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