A rubber oil seal had to be marked with a 10 character code only 1.25mm high. The set-up consisted of a Synrad laser, FH Series Flyer marking head and Synrad’s WinMark Pro software. The head had an 80mm focusing lens to provide a 116-micron spot with a 0.8mm depth of field. Text height was set at 1mm with 0.15mm of extra character spacing and a text radius of 54mm to match the seal’s curvature. With four complete passes in a total cycle time of 0.13 seconds, the rubber surface was vaporised ‘slowly’ in small increments, creating a very distinct mark.
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Laser Lines
英國鐵路公司如何推動凈零排放
It would be better if the trains had good coverage of the country. Large areas have no easy connection and so cars (or buses?) and lorries are still...