The operating principle of eddy current defectoscope (Descrydefect)

If next to the object of a ferromagnetic material to create an alternating magnetic field inside the material object induced eddy currents. The eddy currents also produce a magnetic field that counteracts the external magnetic influences. The parameters of the secondary magnetic field are fixed. If there is an object within the material imperfections (such as cracks, cavities, and other defects), it will affect the eddy current configuration, and, consequently, the parameters of the magnetic field created by them. Fixing these changes, you can get information about the internal defects of the object.

Features shadow control method

Development of a technique defectoscope (Descrydefect) or designing the system for automatic control begins with the selection scheme of control: control method, such as waves, surface through which sound waves are introduced, the input angle. To control the metal is mainly used in the echo, shadow and mirror-shadow methods.

Ultrasonic defectoscopes (Descrydefect)

Ultrasonic defectoscope (Descrydefect) - one of the most accessible and popular devices for the detection of defects in products made of different materials. The principle of its action is not limited in application, and is non-destructive, so many areas of industry take it on board.

Imprint on the analysis features acoustic method imposes physics of sound. Wave can be dissipated by air because of its resistance to sound, so when measuring the surface of the sample is prepared in a certain way.

How did the defectoscope (Descrydefect)

Defectoscope (Descrydefect) is intended to detect internal defects in welds (pores, cracks, slag inclusions, and others.), in metals and some plastics. The device allows to determine the depth at which the defect is in the range 7 ... 50 mm with accuracy ± 1 mm.

The first defectoscopes (Descrydefect), which worked on the continuous sounds, created by S. Y. Falcons in 1928. In 1937-1938, there was the world's first defectoscope (Descrydefect), which used alternating current control structures of railway and wheel sets.

Types of defectoscopes (Descrydefect)

Depending on the method of implementation of the test items, defectoscopes (Descrydefect) are divided into:

• Acoustic defectoscopes (Descrydefect)
• Magnetic Particle defectoscopes (Descrydefect) - for the detection of defects on the surface of controlled products applied magnetic powder. After magnetization parts powder particles are connected in a chain, and they accumulate over the defect under the influence of the resultant force.
• Eddy current defectoscopes (Descrydefect) stimulate research in the area of ​​the eddy currents and calculates the change of the electromagnetic field, which are caused by a defect and the properties of the product.
• Ferroprobe defectoscopes (Descrydefect). They are used to detect defects in cast parts, metal and welded joints. This defectoscope (Descrydefect) is able to identify the defect to a depth of 0.1 mm and a width of a few micrometers.
• Thermoelectric defectoscopes (Descrydefect) used to determine the grade of material, which consists of the product.

Application defectoscope (Descrydefect)

Defectoscopes (Descrydefect) are used in various parts of mechanical engineering, chemical industry and other. Products determine properties of solids and molecular properties. The device is used to control the parts and pieces, welded, soldered and glued joints, observation units for details. Some defectoscopes (Descrydefect) allow checking products moving at considerable speeds (e.g., during the rolling of the pipe).

DESCRYDEFECT (Defektoskop) 250a

Apparatus for non-destructive testing of metal blanks detect internal and surface defects.
This model is designed for the control of internal and surface defects of metal blanks using the patented technology DESCRYDEFECT (Defektoskop).

DESCRYDEFECT (Defektoskop) 340b

Apparatus for control of surface defects blanks, as well as for non-destructive testing of metal pieces on the chemical composition in steel grades.

DESCRYDEFECT (Defektoskop) 350s

Apparatus for control of internal and surface defects blanks, as well as for non-destructive testing of metal pieces on the chemical composition in steel grades.