Casting inspection is an important means to find product defects, and it is also a key process to ensure product quality. At present, there are many methods for non-destructive testing of castings. The most commonly used are magnetic particle inspection, fluorescent inspection, ultrasonic inspection, radiographic inspection, etc.

Welding is a commonly used technique in industrial production and processing, and its main purpose is to connect two or more materials into one. Pipeline welding is used in all aspects of industry, from aerospace, electric power and petrochemical, automobile manufacturing to food, pharmaceuticals and other fields are inseparable from welding.

Cars have become an indispensable necessity in people's daily needs. Basically, every car in every household is a standard product. With the gradual increase of cars, the number of traffic accidents that occur each year is also increasing.

With the development of science and technology, there are more and more types of endoscopes, but the principles are similar: usually the probe needs to be inserted into the object for detection, and the human eye cannot look directly at the display through electronic imaging technology. Of the site. The probe is a very important part of the endoscope.