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本文介绍了应用声发射技术对 CO_2保护铸铁冷焊进行监测,借以评价冷焊质量的研究结果。将声发射记录曲线与 X 射线探伤、渗透探伤、磁粉探伤、光学显微镜观察和拉伸试验结果相对照,发现:焊接较好的焊道、不同类型的焊接裂纹与气孔都具有不同的声发射信息特征。因此用声发射监测可以及时地对冷焊质量作出评价,而且方法简单,灵敏度高。
This paper describes the application of acoustic emission technology CO_2 protection cast iron cold welding monitoring, in order to evaluate the quality of cold welding research results. Acoustic emission recording curve and X-ray detection, penetration testing, magnetic particle inspection, optical microscopy and tensile test results in contrast and found that: welding better weld, different types of welding cracks and pores have different acoustic emission information feature. Therefore, the use of acoustic emission monitoring can be timely evaluation of the quality of cold welding, and the method is simple, high sensitivity.