THE STUDIES OF LASER OXYGEN THICK SECTION CUTTING USING DISK LASER
Laser Oxygen Thick Section Cutting (LOTSC), a cutting process which utilises the full performance of a supersonic oxygen gas jet for cutting (typically) 30-60 mm mild steel plate, has previously been examined primarily using the CO2 laser. This paper looks at some of the considerations that need to be addressed to transfer the process to the 1.03 μm Disk laser source. Feedrate and standoff comparisons are made between the two systems; the CO2 results shown in this case to be both faster and have a larger stable operating window. An explanation for this is proposed resulting from aberration within the 1.03 μm optical train, placing more energy into the base of the cut. Kerf parallelism for the previous reported work has not been acceptable for all processes. In order to address this, the supersonic nozzle has been used at various pressures to try and reduce the flaring effect. Experimentation and Computational Fluid Dynamic modelling have shown that the kerf taper can be reduced.
Tao Zhang Martin Sparkes Markus Gross William ONeill
Centre for Industrial Photonics, Institute for Manufacturing, University of Cambridge, Cambridge, CB4 0FP, U.K.
国际会议
第三届太平洋国际激光与光学应用会议(PICALO 2008)
北京
英文
22-27
2008-04-16（万方平台首次上网日期，不代表论文的发表时间）