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采用2kW光纤激光器对16mm以下Q235-A碳钢进行切割,以3mm及10mm为例进行工艺分析。在工艺优化后,对各样件进行分析。分析了焦点距离、激光功率、离焦量、气压各参数对切缝形貌、粗糙度、条纹的影响。结果表明,与传统的激光器不同,光纤激光切割3mm的碳钢一般为正离焦,切割10mm碳钢一般选择负离焦。切割薄板时,为了提高速度,一般选择高功率、高气压切割。切割厚板时,确保切面质量,一般选择高功率、低气压。
The Q235-A carbon steel below 16mm was cut using a 2kW fiber laser, and the process analysis was performed using 3mm and 10mm as an example. After the process optimization, the various pieces of analysis. The effects of focal distance, laser power, defocusing amount and air pressure on the shape, roughness and streak of the kerf were analyzed. The results show that, unlike traditional lasers, fiber laser cutting 3mm carbon steel is generally positive defocus, cutting 10mm carbon steel generally choose negative defocus. Cutting sheet, in order to improve speed, the general choice of high-power, high pressure cutting. Cutting thick plate to ensure the quality of the section, the general choice of high-power, low pressure.