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Welding process for laser cutting Laser

Original:Tongda Technology (Dalian) Co., Ltd. Writer:Jessie Date: 2016-03-08 Views: 477
 
Laser cutting < p > processing of laser welding process welding is one of the laser most important aspects of laser material processing technology application, welding process is a type of heat conduction, laser radiation heating surface of workpiece, surface heat through heat transfer oriented internal diffusion, by controlling the laser pulse width, energy peak, power and repetition frequency parameters, so that the workpiece melting, specific the molten pool formation. Due to its unique advantages, it has been successfully used in the welding of micro and small parts. The appearance of high power YAG and high power CO2 laser has opened up a new field of laser welding. The deep penetration, which is based on the theory of small hole, H As been widely used in mechanical, automobile steel, and other industries. The principle of laser cutting by means of the focusing is of high power density laser beam irradiation of the workpiece, the by products of irradiation fast melting, vaporization and ablation or achieve ignition, and the coaxial with the beam of high speed airflow blow to the molten material, so as to realize the product cut. Laser cutting is one of the methods of thermal cutting. laser cutting according < p > to the process can be divided into oxygen gas laser cutting, laser scribing and laser vaporization cutting and laser fusion cutting and fracture control of four kinds of.

laser cutting machine is mostly through the numerical control program to contr Ol the operation of the. Laser cutting processing methods are widely used, almost all of the material can be cut, including the cutting of thin metal plate

. It can also be used in the field of automobile manufacturing, such as the space curve cutting of the car top window, the laser cutting all kinds of complex body sheet and curved surface parts. Laser cutting technology can also be used in the aerospace field, which is mainly used for the cutting of special materials such as, titanium alloy, aluminum alloy, nickel alloy, chromium alloy and composite materials, plastic ceramics, and quartz, etc..

in addition to the high hardness and brittleness of the material, the material can also be cut and processed, for example, cloth Paper, plastic, rubber, etc.., The main advantages of

laser welding are:

1 laser welding speed is fast the depth, is big, the deformation is small. Can be welded at room temperature or under special conditions, and the equipment is simple and easy to be welded. For example, the laser beam will not be offset by the electromagnetic field, the laser can be applied in the air and some gas environment, and can be welded by glass or transparent material. Laser focus, high power density, high power devices in the welding, the depth to width ratio of up to 5:1, up to 10:1.

can be welded refractory materials 2 such as titanium quartz, etc., and, can apply to the opposite sex, the effect is good. For example, the two Kinds of different properties of copper and tantalum materials welded together, the pass rate of nearly one hundred percent.

also be micro welding. 3 can Laser beam after focusing can get very small spot, and precise positioning can be used in automated mass production of micro and small component of group welding, for example, integrated circuit lead, hairsprings display, tube electronic gun assembly due to the adoption of the laser welding, not only the production efficiency rate, high and small heat affected Zone, solder joints with and without pollution, greatly improving the welding quality.

laser welding can be difficult to close to the site, the implementation of non contact remote welding, with great FLEXIBIL Ity. in the YAG laser technology, optical fiber transmission technology is used to make the laser welding technology has been more widely used. The laser beam is easy to realize the light beam in time and space, and can be processed at the same time and multi station processing, which provides the condition for the more precise welding.

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