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对焊缝采用超声波方法比 X 射线方法探伤有许多特点,特别在条件较差的工地现场,采用重量只有5公斤左右的晶体管超声波探伤仪,比起笨重得多的 X射线机来,既可爬高下低.对焊缝作较全面的检查;又因对人体无害,探伤速度快,探伤与焊接可同时进行作业,所以很受探伤人员与焊工的欢迎。我厂用不带衰减器的 CTS-8型及入射角为整数值的斜探头,进行了对接焊缝的超声波探伤试验,在实践中感到:目前8～25毫米焊缝超声波探伤的首要问题是要做到准确定位,只有准确定位,才能明辨真伪,排除干扰;同时.还要选择适当的灵敏度,以对
The use of ultrasonic welding of the ultrasonic method than the X-ray detection method has many features, especially in poor conditions at the site, using only about 5 kg weight of the transistor ultrasonic flaw detector, compared to bulky X-ray machines to climb High and low on the weld for a more comprehensive inspection; and because of harmless to the human body, testing speed, testing and welding can be carried out at the same time, it is very popular with inspectors and welders. I plant without attenuator CTS-8 type and the angle of incidence of the integer value of the oblique probe, butt weld ultrasonic testing, in practice: the current 8 to 25 mm ultrasonic flaw detection is the primary problem To achieve accurate positioning, only accurate positioning, in order to distinguish the authenticity, eliminate interference; the same time also choose the appropriate sensitivity to