论文部分内容阅读
激光等离子体中包含了反映激光焊接过程特征的信息。利用激光等离子体光电信号同步检测系统,检测激光等离子体的光电信号并进行光电信号的对比分析,阐明了电信号与等离子体温度之间的关系;对A304不锈钢、430不锈钢、碳钢Q235等材料的激光表面自熔焊接过程的等离子体电信号进行了实时检测及概率密度分布分析,对深熔焊特征最明显的A304不锈钢进行了电信号概率密度分布的标准差分析。研究结果表明:利用激光等离子体电信号能够实时反映激光焊接等离子体的温度变化的特点,可以根据激光等离子体电信号概率密度分布来分析激光焊接模式的特点,进一步的标准差分析法可以判断A304不锈钢激光焊接的模式。
Laser plasma contains information that reflects the characteristics of the laser welding process. Using laser plasma photoelectric signal synchronous detection system to detect laser plasma optoelectronic signals and comparative analysis of optoelectronic signals to clarify the relationship between electrical signals and plasma temperature; A304 stainless steel, 430 stainless steel, carbon steel Q235 and other materials The real-time detection and probability density distribution analysis of the plasma electric signal of the laser surface self-fusion welding process were conducted. The standard deviation analysis of the electrical signal density distribution of the A304 stainless steel with the most obvious deep penetration welding characteristics was carried out. The results show that the characteristics of the laser welding mode can be analyzed according to the probability density distribution of the laser plasma signal by using the laser plasma signal to reflect the temperature variation of the laser welding plasma in real time. Further standard deviation analysis can judge whether A304 Stainless steel laser welding mode.