Heat affected zone of cold rolled steel after laser cutting was very narrow and was not affected by the variation of laser cutting technology parameters.

金属材料激光切割后其热影响区非常小，受激光切割工艺参数的影响不大。

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Some practical problems of this technology, such as tool material selection, special optimization index of cutting parameters and tool geometry determination, are discussed as well.

本文还深入讨论了刀具材料、特定的切削用量优化指标以及刀具几何参数确定等实际技术问题。

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Noise value, noise power, noise voltage, vibration power and amplitude vibration were measured under different cutting parameters of technology and frequency spectrum analysis was also made.

在不同的锯切工艺参数和锯片结构下，测量了噪声值、噪声功率、噪声电压、振动功率和振动幅值，并对其进行频谱分析。

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