A304不锈钢薄板激光焊工艺试验研究

研究利用激光焊接技术焊接A304不锈钢薄板的工艺.试验过程中,采用一系列激光焊参数焊接试板,然后将焊接接头制成金相试样,观察熔深、熔宽、热影响区的大小,比较连续激光和调制方波脉冲激光焊接不锈钢薄板的效果.     

薄铜板对接TIG焊工艺试验研究

针对铜薄板的焊接进行研究,分析了铜薄板对接易出现的问题,根据焊接工艺特点确定采用TIG焊进行焊接工艺试验;深入探讨焊接工艺参数的选取及其焊接缺陷等.实验结果表明,对于薄板焊接,焊接速度和焊接电流对焊接效果影响很大.在合适的参数下,焊缝成形良好,可以作为生产实际应用的依据.     

Noise wavelet-suppressing on electric signals in meso-spray process of pulse MIG welding of aluminum

An analysis with Fourier series on electric signals of meso-spray process of pulse MIG welding of aluminum shows many harmonic waves of different frequency in the signals,including the inherent high,low frequency elementary waves of short circuit and the harmonic waves from pulse current besides the noise signals of high frequency.The wavelet filtering with adjustable threshold is applied to study and handle the electric signals from meso-spray process of pulse MIG welding of aluminum,displaying a good solution on suppressing the noise in the signals.