All the holes until the completion of the processing

Laser cutting is the use of the laser beam is focused to form a high power density of the spot light parts, materials absorb light energy, the temperature rises rapidly, the material rapidly heated to melting or vaporization temperature, and then blowing of the gas jet, in order to separate materials. In this process, the laser light hits the surface, the part of the light absorbed by the workpiece, and the other part of the light reflected by the workpiece. Absorb some heat into the workpiece surface temperature increased rapidly, the material melting or vaporization, while a black hole effect, and the material light absorption rate, rapid heating and melting or vaporization zone material. At this point you can combustion oxygen, and provide a lot of heat, such as the cutting speed. Continuous output laser cutting is preferred. Features: Laser cutting can be especially hard, brittle, and special features of soft materials, the melting point of difficult materials; kerf width is very narrow; cutting surface smooth; cutting the heat-affected surface layer of light, the surface stress is small; cutting speed, heat-affected zone small; no mechanical deformation, no tool wear, easy to automate production. Laser welding the laser is focused into a very thin beam of high energy density radiation to the workpiece, the workpiece heat melt, and then cooling the workpiece to be welded. Knot deep penetration laser welding, high speed, high efficiency; laser welding burn area narrow heat-affected zone is very small, very small deformation of the workpiece, while the weld is small, can realize precise welding; welded structure uniform, small grain products , less porosity, inclusions few defects in the mechanical properties, corrosion resistance and electromagnetic performance superior to conventional welding methods. The nonconforming item of green laser pointer should be solved one after another.
Laser heat treatment is the use of high power density of laser beam on the metal surface treatment methods. For example, when the metal surface heated to just below the melting point of the critical transition temperature, its surface quickly austenitizing and rapid quenching from the cold, metal surface quickly strengthened, that is, laser transformation hardening (laser hardening). Laser surface heat treatment techniques include laser transformation hardening, laser coating technology, laser alloying, laser shock processing technology, these technologies to change the mechanical properties, heat resistance and corrosion resistance, etc. have an important role. The impact of early laser drilling method using fixed-point: that in one location with a pulsed laser beam non-stop processing until the hole through. This processing method, the process of hole depth and diameter are limited. High repetition frequency YAG laser into the practical stage, there has been peeling drilling method (Trepanning), which uses special optical rotary head or CNC laser automatically generate sets of circular trajectory material processing. This not only eliminates the aperture restrictions, and because there are auxiliary blowing, the processing area was semi-open, easy to melt discharge, so the hole surface quality. Specifications for the distribution of a large hole in the same parts, especially the rotating body, but also the development of the current flight drilling method (Drilling on the fly), the laser machining of a hole after a pulse, regardless of whether the hole opened up, take advantage of the workpiece pulse gap fast motion (move or rotate) to the next hole, so the same location for multiple cycles of several attacks, all the holes until the completion of the processing.