论文部分内容阅读
随着我国国民经济的调整、发展,对交通运输工业提出了新的要求。目前我省造船工业,特别是内河水网地区的船舶及沿海,长江运输船舶发展较快,在对船舶壳板焊缝的质量检验中,有条件的单位大都采用X射线拍片,而有的单位尚未进行。我们知道如用X射线拍片,设备昂贵、成本高,速度慢,且对人体有害。几年来,不少工厂和科研单位,在焊缝超声波探伤方面做了很多工作,并在船体壳板对接焊缝质量检验方面用超声波探伤逐步代替X射线拍片。几年来,我们在生产实践中,对船体4～12毫米钢板对接焊缝的超声波探伤进行了
With the readjustment and development of our national economy, new demands have been put on the transportation industry. At present, the shipbuilding industry in our province, especially in the inland water network area and the coast, the Yangtze River transport ship developed rapidly, in the quality inspection of ship shell weld, the most qualified units are X-ray film, and some units Not yet done. We know that if using X-ray film, equipment is expensive, high cost, slow, and harmful to humans. In recent years, many factories and research institutes have done a lot of work in the ultrasonic testing of welds and gradually replaced the X-ray films with ultrasonic flaw detection in the quality inspection of hull shell butt welds. In recent years, we have carried out ultrasonic flaw detection on butt welds of 4 to 12 mm steel hull in production practice