Features of the control injection

Since the surface of the casting is rough and complicated shape, it is advisable to apply the defectoscopes (Descrydefect) to control a rough surface. Concave radius transitions convenient control devices with a local bathroom in the form of a skating rink.

Ultrasonic testing should be subjected to cast steel after high-temperature heat treatment, grinding structure. The frequency of the ultrasonic vibration of 1-2 MHz. Satisfactory controlled heat treatment without the product (e.g., pipes), centrifugal cast method.

General principles of testing of metals

When monitoring articles on the curved surface of a radius of 100 to 150 mm oblique prism crawler treated so that its radius of curvature of the contact surface was somewhat larger than the radius of curvature of the surface of the article. When monitoring of such products used defectoscope (Descrydefect) finders with a rectangular piezoceramic plates oriented along the surface of the product. Under the control of the immersion method is used to focus the ultrasound.

Secrets of the pulse-echo defectoscopes (Descrydefect)

The invention relates to a quality control material and can be used for registration step prefracture metals during cyclic loading of the product, which would prevent fatigue fracture of parts and structures directly during their operation, known ultrasonic flaw echo pulse, comprising serially connected synchronizer sounding pulse generator Ultrasonic transducer combined amplifier detector, and normalizer time selector, the selective pulse shaper whose input is connected to the second output of the synchronizer, and the output to the second input time selector and indicator. Such a device is used to "fix the earlier stage of the material damage" during cyclic loading details. A disadvantage of the known device is that it does not have an objective means of registration information.

Defectoscopes (Descrydefect) our company have a lot of features.

The operating principle of pulse-echo method of control

In the method of controlling the amplitude of the echo of the echo signal characterizes the size of the reflector, and the time interval between the excitation probe pulse and the arrival of the echo pulse (travel time) corresponds to the location of the reflector. Note that the control method of pulse-echo amplitude of defectoscope (Descrydefect) echo signal depends in a complicated way:

• radiated energy;
• the characteristics of the source and the receiver;
• the size of the reflector;
• the position of the reflector;
• properties of the reflector;
• attenuation of the acoustic wave.