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- W2196242553 abstract "A device is described which is simple to build and install, the alignment procedure is easy to use and operator training is minimal. This study shows that using the described beam deflection alignment device and technique will produce welds which on the average have (a) fusion zone centerlines coincident with the weld joint and (b) penetration along the joint in excess of 90% of the maximum penetration. It was also shown that the penetration variation, along the joint, is most strongly influenced by the variation in maximum penetration. Thus, for those applications where beam deflection is advantageous, the technique can be used successfully. The most difficult step in the alignment procedure is producing coincidence between the beam deflection path and the Lissajous pattern for low frequency deflection rates. Deflection rates in the one Hertz region require some time usually less than one minute, to set up. Coincidence at high deflection rates could not be produced to reduce the rate for welding because of the amplifier-deflection coil-beam interaction. However, it would be possible to interface the operator's telescope with a TV camera, TV display and a microprocessor. The position of the Lissajous pattern would then read, by the processor, from themore » display, and the deflection path would be controlled by the processor until it became coincident with the Lissajous pattern and the weld joint, although this could also be accomplished with the processor.« less" @default.
- W2196242553 created "2016-06-24" @default.
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- W2196242553 date "1978-04-01" @default.
- W2196242553 modified "2023-09-23" @default.
- W2196242553 title "Accurate device for aligning beam deflection welds" @default.
- W2196242553 hasPublicationYear "1978" @default.
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