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Laser welding for the automotive industry - laser, welding, auto - metal industry
The most basic features are: monochromatic, directional and relevance, the unique nature of these plus the resulting ultra-high brightness, ultrashort pulses and other properties and it has been closely combined with modern industry, these qualities very suitable for welding process. Lasers produce laser generally work by different substances classified, mainly semiconductors (GaAs, InP, etc.) laser, solid (Nd: YAG, etc.) laser, gas (CO2, He-Ne, etc.) laser, liquid (tunable dye, etc.) lasers, chemical lasers, free electron lasers. One gas to gas or metal vapor lasers as light particles, it is the most diversified, most diverse incentives, the widest distribution area of laser wavelength, easy to achieve a continuous output power, one of the most widely used class of laser. Solid-state lasers is to produce laser particle doped in the solid matrix, the concentration ratio of gas, therefore the access to relatively large laser energy output, with high energy, high-peak power, compact and durable and so on. In laser welding mainly on the use of two lasers by stimulated substances.
Laser welding applications in the manufacture of steady growth, from pulse to continuous, from small power to power, from the thin to thick pieces, from simple to complex shapes single slit, laser welding in the continuing evolution has been gradual become a mature modern processing technology. Laser welding and laser welding into a continuous laser welding, continuous welding can be divided into heat conduction welding and deep penetration welding. With the increase of laser output power, in particular the emergence of high power CO2 laser, laser deep penetration at home and abroad have been in rapid development, the largest welding aspect ratio has reached 12:1, laser Welding materials Also from the general to the development of low carbon steel welding galvanized sheet today, aluminum, titanium, copper and ceramic materials, laser welding speed has reached tens of meters per minute, laser welding technology become more sophisticated, and applied to the production line , in the automobile production line, such as Gear Welding, automotive floor and structural parts (including door body) and high-speed welding and has achieved tremendous economic and social benefits.
According to statistics, advanced industrial countries in Europe and the United States, 50% -70% of the automotive components is accomplished using laser processing. Mainly dominated by laser welding and cutting the main laser welding in the automotive industry has become the standard technology. Laser welding for body panels can be of different thickness and with different surface coating of metal plates welded together, and then to press, so panel structure made of metal to achieve the most reasonable combination. Laser welding the rate of about 4.5m/min, and little distortion, eliminating the need for secondary processing. Laser welding speed stamping parts instead of using the process of forging parts. Laser welding can reduce the overlap width, and some strengthening components, you can compress the size of their body structure parts. This alone can reduce body weight 56kg. Laser welding of the roof shell and framework for welding, welding cover drive converter from the CNC control, the cycle time is about 16 seconds, the actual welding time is only 3 seconds, can run continuously 24 hours a day. For welding cars gearbox and chassis assembly, laser beam welding speed, easy automation and easy to merge into a flexible manufacturing system, the laser beam to improve the manufacturer's product design, production cycles, reducing the waste product rate.
2, laser welding applications in the automotive industry
Laser welding for the automotive industry can bring enormous economic benefits, such as body assembly of a large number of spot welding, the two welding head caught in the workpiece on the edge of the weld flange width required 16mm, the laser welding is sided welding, only 5mm, the spot that the laser welding, each vehicle can save steel 40kg. Traditional spot welding two pieces of 0.8mm steel plate stamping parts, an average of 20 points / min, welding distance is 25mm, the speed of 0.5m/min, laser welding speed can reach more than 5m/min. Laser welding technology, not only reduce costs but also greatly improve the efficiency of production.
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I need parts for a Keystone 98Z film projector. ?
I picked up this projector today, in hopes of being able to view some old family movies on 8mm film.
Upon looking at it further, I discovered that the motor still works. However, the bulb is burned out, it calls for a "DCH" lamp... so, I need one of those.
The spools that go on those arms were not included... this was used, at a junk shop. They apparently had been lost at some point.
So, I need the wheels/spools and a bulb.... where can I find parts for such an old device?
I suppose these spare old archaic parts one has to look for them in some old bazaars ! Try the links :
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