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Laser welding with traditional welding

by:J&D WATER     2020-03-21
Laser welding and laser cutting and laser marking, compared to the former for the development of a relatively short time, the technology difficulty is greater than the laser cutting and laser marking. Laser cutting and laser marking is the use of laser surface structure or the overall structure of the materials will be destroyed, and the structure of the laser welding is using laser material processing molten and reshaping. Substance constructs compared with simple structure, higher request of laser and the processing craft. Specific contrast is as follows: laser welding the difference with the traditional technique of welding laser welding as a kind of modern welding technology, has deeply, high speed, small deformation, melting of the welding environment requirement is not high, big power density, is not affected by magnetic field, is not limited to conductive material, do not need to vacuum working conditions and the welding process does not produce the advantage such as X-ray, is widely used in high precision manufacturing, especially the new energy vehicles and power battery industry. Laser welding technology compared with other welding process, the welding effect has strong advantages, specific contrast is as follows: source: Industrial Laser but compared with other welding technology, Laser welding automation equipment cost is higher; For welding automation equipment and public joint equipment precision demand is high, difficult to manual operation; On the welding material properties and fixture accuracy requirement is high. Laser welding has what ways according to different working principle, the adaptation of different processing scenario, deep penetration laser welding can be divided into heat conduction welding, and composite brazing and laser welding, laser transmission welding of five, specific as follows: in the welding of heat conduction and surface deep penetration to melt to create a hole filled with steam, laser soldering or hole effect, use of filler wire, active and protection of gas laser welding according to the product combination classification as shown in the figure below. Butt welding requirements as far as possible without aperture, generally less than 0. 5毫米。 And the thinner more rigorous product requirements; Penetration welding gap requires lower joint firm as far as possible, the thinner the upper material, joint is tight. The core element of the laser welding laser energy are core factors in determining the quality of laser welding control and welding technology. ( 1) Laser energy control due to the welding materials for different wavelength laser absorption ( Can range from 5% to 50%) , choose different laser, the welding effect is completely different. For butt welding a unified, stable output laser beam welding, would require the laser output power has a good consistency or able to precisely control the laser output power, power is too low will lead to insufficient welding molten and affect the welding quality, high power or fluctuate will lead to adverse effects such as splash, porosity. Therefore, the controlling of laser energy has become one of the most key technologies of laser welding. ( 2) Welding technology of laser and material process is relatively complex, the size effect of laser welding and laser wavelength, power density, welding time, welding head Angle, focus distance, welding pieces of the laser absorptivity and clean degree, the thickness of the weldment and thermal conductivity, type and flow of shielding gas, etc, dozens of factors. Therefore, the laser welding technology is also one of the key factors which can affect welding quality, needs to fumble ceaselessly laser welding technology and technical personnel, for a long time accumulation of experimental can get good welding effect. Laser welding equipment recommendation: preferential deals offer 4007001618 【 Metal laser welding equipment 】 Suitable for all kinds of complex welding, the welding of different equipment and 1 mm thick seam welding; Multi-channel fiber optic mode, welding transfer at the same time; 【 Mould laser welding equipment 】 Applicable mould industrialized, used for precision mold repair, such as digital products, mobile phones, toys, automobile, motorcycle, mold and other mold manufacturing and molding industry. 【 Gold and silver jewelry laser welding 】 Mainly used in jewelry, such as electronics, communications, handicrafts and other industries; 【 Large laser welding 】 Application in automobile body covering parts of compound, such as car door, side wai, window, floor, warehouse, the warehouse before, trunk lid. 【 Automatic laser welding machine 】 Using numerical control software by moving or rotating workpiece computer control of mechanical system, so as to realize automatic welding 【 The laser spot welder 】 Can be used for jewelry, watches and clocks hairspring, integrated circuit lead all kinds of small, precise welding of heat sensitive parts of the YAG laser welding machine 】 High compactness, and strong weld, precise control, high power density, deep and narrow welds, welding seam and beautiful characteristics of laser welding equipment more laser welding laser welding machine
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