我厂为解决铝合金点焊的质量问题,采用超声波脉冲穿透法进行检测。经一年多试验研究,证明用此法可判断出:脱焊、裂纹、核心偏小、标准焊点等,是一项值得进一步研究探讨的课题。一、试验原理及超声波在焊接过程中衰减规律生产实践表明,质量问题是多种因素影响的结果,若只从某一方面去考虑是很 I plant to address the quality of aluminum spot welding, the use of ultrasonic pulse penetration method for testing. After more than a year of experimental research, this method can be used to prove that: welding, cracks, the core is small, the standard solder joints, is a topic worthy of further study. First, the test principle and ultrasonic attenuation law in the welding process Practice shows that quality problems are the result of many factors, if only from one aspect to consider is very