Among the many series of flaw detectors, ultrasonic flaw detectors are the most popular. Because ultrasonic flaw detectors can detect, locate, evaluate and diagnose various defects within the workpiece conveniently, quickly, accurately and without damage.
It can be used both on engineering sites and in laboratories. Therefore, ultrasonic flaw detectors have been used in electric power, chemical industry, petroleum, aerospace, aviation and other fields.
Since the ultrasonic flaw detector is a very professional instrument, non-professionals cannot understand this instrument at all, so many counterfeiters have exploited loopholes. Some domestic manufacturers take advantage of the fact that digital ultrasonic flaw detection can be faked to produce substandard products.
If you do not have professional testing tools, the following ultrasonic flaw detector purchasing guide can help you identify authenticity:
1. The price is extremely low. You should understand the market price of ultrasonic flaw detectors to see if it is the right price. Don’t just be cheap. The so-called cheap products are not good.
2. Check whether the vertical linearity is qualified and the method
3. There are also some indicators that require special test blocks. It is recommended that new instruments be sent to provincial metrology and testing institutes for identification to avoid being deceived.
4. When the probe is not connected, adjust the gain to the maximum. The waveform on the screen cannot exceed 10% of the screen. If it exceeds, the instrument is unqualified.
5. Pay attention to the production process and certification documents. Generally, ultrasound requires professional training.The consequences of using unqualified ultrasonic flaw detectors are serious. Since ultrasonic non-destructive testing is used for quality inspection or safety inspection, if a quality accident occurs or even endangers personal safety, the unqualified instrument you saved a little money to buy back will put you in a very unfavorable situation.
