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大表面CO_2激光表面淬火必然涉及窄条的表面硬化,因为不可能有足够大的光束一次扫描就能复盖整个试样。所以表面淬火层由重迭的窄条组成以便提供完整的淬火表面。我们研究两种材料的扫描重迭效应,OLC45钢(含碳0.42—0.50％,锰0.50—0.80％,硫0.045％(最大含量),磷0.040％(最大含量)和34MoCrNi 15(含碳0.30—0.38％,锰0.40—0.70％,铬1.40—1.70％,镍1.40—1.70％,钼0.15—0.30％,硫0.035％(最大含量),磷0.035％(最大含量)。)。试样涂敷碳黑,被圆形聚焦光束辐照。入射功率为400W,淬火带
Surface hardening of large-surface CO 2 laser lasers necessarily involves the hardening of the surface of the strip because it is impossible to cover the entire sample with a large enough beam of light at a time. So the surface hardened layer consists of overlapping strips to provide a complete quenched surface. We studied the scanning overlap effect of two materials, OLC45 steel (carbon 0.42-0.50%, manganese 0.50-0.80%, sulfur 0.045% (maximum content), phosphorus 0.040% (maximum content) and 34MoCrNi 15 (carbon 0.30- 0.38%, 0.40-0.70% manganese, 1.40-1.70% chromium, 1.40-1.70% nickel, 0.15-0.30% molybdenum, 0.035% sulfur, and 0.035% phosphorous. Black, is a circular focus beam irradiation incident power of 400W, quenching zone