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The term laser welder may refers to laser beam welding machine, which is one laser welding technology that is utilized to join pieces of metal work pieces or thermoplastics via the use of a laser. The beam offers one concentrated heat source that allows for narrow and deep welds as well as high welding rates. The procedure is often used in high volume applications using automation, as in the automotive industry and it is based on keyhole or penetration mode laser welding process.
Normally speaking, a continuous or pulsed laser beam may be utilized depending upon the actual application. Millisecond long pulses are utilized to weld thin materials such as razor blades, while continuous laser systems are used for deep welds.
Furthermore, LBW is a versatile process, capable of welding carbon steels, HSLA steels, stainless steel, aluminum, and titanium materials, and because of the high cooling rates, cracking is a concern when welding the high-carbon steels. The laser weld quality is high and similar to that of electron beam welding. Moreover, the speed of laser welder is proportional to the amount of power supplied yet also depends on the type and thickness of the intended work pieces. The high power capability of gas lasers make them especially suitable for high volume industrial applications. To be specific, LBW is particularly dominant in the automotive industry. Besides the laser beam methods, there are also other ways of welding procedures such as seam welding, projection welding, and grating welding. We will take a look at these types of welding and see the comparisons in between.
Grating welding machines are also very popular in the market, which is one of the main export products of Taiwan’s welding machine manufacturers. There are well known Taiwanese suppliers who are highly apprised for their excellent machinery performance and accurate welding quality in the industry. For instance, there are the famous GT model and FT model produced by Taiwanese suppliers in which both models are designed for industrial applications with distinguished purposes and specifications, such as rigid machine frame and three phase inverter - DC current output solution, therefore, 70% of the energy could be saved compared with conventional standard single phase AC machines. This is the characteristics of the grating welding.
In addition, in the metal welding field, resistance seam welding machine is a welding machine in which the welding process produces a weld at the faying surfaces of two similar metals. During the process, the seam may be a butt joint and is an automated process. It is different from flash welding in that flash welding welds the entire joint at once while seam welding forms the weld progressively and starts at one end. Flash butt welding is a very useful welding method, and the flash butt welding machine is an electrical resistance welding processes designed on a welding machine that is utilized for joining components, in which the energy transfer is offered primarily by the resistance heat from the parts themselves. The parts and components are positioned end to end across the full joint areas. A range of section sizes and complex shapes can be con-joined through this machine. During the process, the parts are clamped and brought together slowly while a flashing voltage is applied. Though the process can be manually achieved, most welding machines nowadays are automatic for better controlled accuracy.
Still, there is projection welding method, and speaking of the spot welding machine, here we introduce the projection welding machine at the very first since this one belongs to the spot welding machine and is very popular in the industry. In the welding sector, projection welding machine is a modification of spot welding machine. During the projection welding process, the weld is localized by means of projections on one or both of the work pieces to be joined. The heat is concentrated at the projections, which permits the welding of heavier sections of welds. The projections can also serve as a means of positioning the work pieces. Conventionally, projection welding is often used to weld studs, nuts, and other threaded machine parts to metal plates and is productive in these processing procedures. It is expected that, no matter what the welding method is used, manufacturers shall bring the welding procedure into automatic, so that the cost of labor can be reduced and the entire welding processing can be programmed controlled, so that the whole process is more controllable. It is anticipated that the era of smart welding is to come in the near future.
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