green laser pointer has the laser indicating function

green laser pointer  has the laser indicating function.
Ideal quench process in Figure 2 in curve 2: 650 ℃ or above should be slowly cooled to minimize the quenching of the thermal stress; the rapid cooling between 650 ~ 400 ° C, through the most unstable regions of austenite. avoid pearlite or bainite. Near the Ms temperature region below 400 ℃, it should be slowly cooled in order to minimize the martensitic transformation of stress. This ensures that the conditions of access to martensite, reduce the stress of quenched to avoid workpiece deformation or cracking. The characteristics of the laser quench to stop heating the moment the temperature reaches the highest, then cooled to 104 ~ 105 ° C / s cooling rate, is much larger than the maximum cooling rate (2000 ° C / s, and 2830 ° C / s) quenching medium for saline or alkaline. green laser pointer is the handheld devices.
According to the relationship between cooling rate and time can be inferred that the laser quenching the cooling curve of the steel ideal for quenching the left side of the cooling curve, curve 1 in Figure 2. Figure 3 shows the relationship between the organization close to the equilibrium state with temperature and alloy composition on the thermodynamics of iron-carbon alloy phase diagram. With slow heating rate of heating up the steel austenitic, can reach the level of close to balance. Austenite is generated generated by the nucleation and growth of carbide dissolution and austenite grain growth, are dominated by the diffusion process. In the laser heating process, when the heating rate is high enough (greater than 400 ~ 500 ° C / s). green laser pointer  can serve as laser indicators.The disposable type and the rechargeable type battery of green laser pointer is much easier
Products from different manufacturers, ATC, APC's technical content is not the same. If raw material costs, material costs of these two parts is quite low, but there are considerable technical content, evaluation of the functional circuit is good or bad, only to characterize the control accuracy; In addition, the job stability of the circuit is a important indicator. ATC control circuit of the model are generally one-way control, that is, only with refrigeration units capable of cooling heat and power rise in temperature by the heat generated by the laser work to maintain, in essence, whether it is the economic model, or professional type models should be adopted by a two-way temperature control for the best, but the economic models are basically one-way temperature control. APC control circuit to maintain constant optical power of the laser components, should be said that the low-end models and high-end models, the part of the circuit is almost little difference.Laser components and control. The models in the selection of laser can be said that the high-end laser spared no expense, are used in popular market, in order to ensure the indicators and the stability of the machine, the state of the laser settings are optimized The design is complete and will not appear in economic models.It is the complete set of green laser pointer
Clean fiber optic connector back to the adapter should be noted that the force fit, in order to avoid too much force to the adapter within the ceramic tube rupture.