First, the principle of laser welding laser welding can be continuous or pulsed laser beam to be realized, the principle of laser welding can be divided into heat conduction welding and laser deep penetration welding. Power density of less than 104 ~ 105W / cm2 for heat conduction welding, melting point depth, welding slow; when the power density of more than 105 ~ 107W / cm2, the role of the metal surface is heated sunken into a "hole" to form a deep penetration with a welding speed fast, large aspect ratio features. Heat conduction laser welding principle: laser radiation heating surface to be machined, surface heat through heat transfer based internal diffusion, by controlling the laser pulse width, energy, peak power and repetition frequency of the laser parameters, the workpiece is melted to form a specific pool. For welding and metallurgy gear plate welding laser welding machine is mainly involved in deep penetration laser welding. The following highlights the deep penetration laser welding works. Laser penetration welding generally use a continuous laser beam to complete the connection material, physical metallurgy and electron beam welding process is very similar to that energy conversion mechanism is through the "hole" (Key-hole) structure to complete. At sufficiently high power density of the laser irradiation, the material is evaporated and form apertures. The full steam holes like a blackbody absorbs almost all of the incident beam energy, bore the equilibrium temperature of about 2500 ℃, the heat from the high temperature of the bore wall pass out, so that surrounds the cavity around the metal melt. The aperture is filled in the lower wall of the high temperature steam beam irradiation material evaporation continuously generated, orifice walls surrounding the molten metal, the liquid metal is surrounded by solid material (which in most conventional conduction laser welding processes and welding, the first energy deposited on the workpiece surface, and then delivered into the interior by passing). Steam pressure liquid flow outside the cell wall and parietal surface tension and bore stalemate continuously generated and maintained homeostasis. Beam continuously into the holes, the outer holes of the material in a continuous flow, with the light beam to move, the flow orifice is always in a stable state. That is, the apertures and the molten metal around the hole wall of the forward speed of the beam with the preamble to move forward, the molten metal filling the voids left after removing holes and subsequently condensed, so the formation of weld. The above process all this happened so fast, so that the welding speed can easily reach several meters per minute. Laser welding machine Application:? Sanitary industry: pipe fittings, adjustable joints, tees, valves, shower welding. Battery industry: Lithium batteries, battery packs, laser welding electrodes. Precision welding stainless steel, titanium and other materials glasses buckle bit, frame and other locations: the optical industry. Hardware industry: impeller, kettle, lock the handle shell, complex stampings, castings welding. Automotive industry: engine cylinder head gasket, hydraulic tappets seal welding, welding spark plugs, filters welding. Healthcare: Medical equipment, medical equipment stainless steel seal welded structure. Electronics: Solid State Relay sealed off welding, metal fittings and connectors welded structure welding, mobile phones, MP3 and so on. Welding motor housing and wired, fiber optic connector tabs and the like. Hardware Industry: Door shell welding, stainless steel products, mixing knife cylinder, wine and other liquor leak