论文部分内容阅读
近几年来,随着生产的发展,厚板的中压设备逐渐增多。我厂对厚板,中板及薄板焊缝进行超声波探伤中,以厚板居多,如板厚为45和64毫米的花板焊缝就探伤百余件。因过去对厚板多道焊接较少,最初检验时发现:在焊缝两侧的熔合线上,近四分之一板厚处,有长条夹渣;在焊缝中心有“未焊透”,且有时发现裂纹。为验证超声波探伤结果及查明缺陷形成的原因,进行了解剖。解剖结果与探伤结果大体相符。但解剖出来的
In recent years, with the development of production, medium-voltage equipment for slabs gradually increased. I plant on the plate, plate and sheet metal welding ultrasonic flaw detection to the majority of thick, such as the thickness of 45 and 64 mm flower plate weld to test hundreds of pieces. Due to the past on the plate less than the multi-channel welding, the initial test found that: in the weld on both sides of the weld line, nearly a quarter thick, there are long slag; weld center “not penetration ”And cracks are sometimes found. To verify the results of ultrasonic testing and identify the causes of defect formation, anatomy was performed. Anatomic results and test results generally consistent. But dissected it out