SU1302150A1 - Transducer for nondestructive checking of part surface layers - Google Patents

Abstract

The invention relates to the field of magnetic measurements, in particular to the technique of non-destructive testing. The goal is to improve the accuracy of control. It is achieved by the fact that the sensor for non-destructive testing of the surface layers of the parts contains an open magnetic conductor (M) 1, on which the excitation winding 2 is located, the measuring winding (IO) 3, the gap adjuster consisting of the clamping bar 4, the screw 5 for fastening on M 1 and damper 6 of magnetically insulating material. IO 3 is connected to the ferromagnetic core 7, placed in the inner shield 8 and in contact with the surface of the part. At the poles M 1 fixed tips 9, the shape of which corresponds to the profile of the part. M 1 is placed in the outer screen 10, having a bracket 11, fastening the part to the sensor using adjustment screws 12. 1 sludge. I (L 12

Description

The invention relates to the field of magnetic measurements, in particular to the technique of non-destructive testing.

The purpose of the invention is to improve the accuracy of control.

The drawing shows the sensor design.

The sensor contains an open magnetic conductor 1, on which the excitation winding 2 is located, a measuring winding 3, which by means of a gap adjuster consisting of a clamping bar 4, a screw 5, is fixed on

The line, which, through the racks 14 of the front magnetic circuit 1, and the damper 6 of magnetoisolation material, is arranged by the magnetic circuit 1. The force is controlled on the ferromagnetic core 7, is lined by tightening the screws 12 mometric key. Then, through the surface with the part. A screw 5 is also fixed on the version in the outer screen 10 for the hypo terminals of the magnetic cores 1, through the polar tips 9, the shape of which 20 is the pressing bar 4 and the damper 6 transmits to the profile of the part. Magnet-guaranteed force on the core 7 wire 1 is placed in the outer shield 10, equipped with a bracket 11, fastening the part to the sensor with the help of adjusting

measuring winding 3. After that, the device is ready for measurement.

25

screws 12. The screen is insulated with gaskets 13 of non-magnetic material from the part. The magnetic circuit is fixed due to the insulating posts 14.

A sensor for non-destructive testing of surface layers of parts containing an open magnetic circuit with an excitation winding located on it, a measuring winding placed symmetrically between the magnetic poles, and a reciprocating mechanism located coaxially with it.

that, in order to improve the control accuracy, the profile tips were additionally introduced into it. The sensor works as follows.

When current is applied to the excitation winding 2, a magnetic flux (pCt) arises, the main part of which flows through the magnetic core 1, 35 pole displacement of the measuring winding to the tips 9 and the part. A part of the foundations of the vertical plane, of the differing magnetic flux, causes a voltage of 3 emf U (t) with out and with that measuring winding. The control of the surface layer of the part is carried out in the region of the slit, which has 40 peaks, the gap regulator, internal in the core 7. The voltage U (t), the bottom screen, in which the coil, measured from the measuring winding 3, is located, in direct proportion to the magnet in which the open magnetic current flowing through the part is placed. In the wire with the excitation winding, depending on the size of the gap between this profile fitting tips with pole fittings 9 and the part, the flap at the poles of the open magnetic and between the measuring winding of the wire, the gap adjuster is made in 3 and the detail changes the mag the adjusting screw, the clamping thread, which leads to the burrs and damper, and the outer screen of the measurement. To reduce this, 50 is made in the form of a skeleton and a bracket, the regulator of the glittered adjustment screws is introduced into the error.

21502

as for the measuring winding 3, and for the magnetic circuit 1.

When adjusting, profile tips 9 corresponding to the profile of the part are mounted on the magnetic core 1. The adjusting screw 5 is screwed into the magnetic core 1 so that the inner shield 8 with the measuring winding 3 installed in it does not touch the part. Install the outer screen 10 on top of the magnetic circuit 1 and using the bracket 11 screws 12 through elastic pads 13 create a clamping usiFO

The line that is transmitted through the racks 14 to the magnetic line 1. The force is controlled when the screws 12 are tightened with a torque wrench. Then, through the hole in the outer screen 10, the screw 5 also rotates — through the presser bar 4 and the damper 6, the guaranteed force is transmitted to the core 7

The magnetic line 1. The force is monitored when screws 12 are tightened with a torque wrench. Then, through the hole in the outer screen 10, the screw 5 also rotates — through the presser bar 4 and the damper 6, the guaranteed force is transmitted to the core 7

measuring winding 3. After that, the device is ready for measurement.

The magnetic line 1. The force is monitored when screws 12 are tightened with a torque wrench. Then, through the hole in the outer screen 10, the screw 5 also rotates — through the presser bar 4 and the damper 6, the guaranteed force is transmitted to the core 7

Claims (1)

Invention Formula A sensor for non-destructive testing of surface layers of parts containing an open magnetic circuit with an excitation winding located on it, a measuring winding placed symmetrically between the magnetic poles, and a reciprocating mechanism located coaxially with it. 35 moving the measuring winding in a vertical plane, I distinguish between w and and with that 40niki, the gap regulator, the internal screen in which the measuring winding is located, the external screen into which the open magnetic conductor with the excitation winding is placed, at 45th this Lena at the poles of an open magnetic conductor, the gap regulator is made in the form of an adjusting screw, pressure plate and damper, and the outer screen 50 is made in the form of a frame and a bracket connected by adjusting screws. that, in order to increase the control accuracy, the profile tips of the measuring winding in the vertical plane were additionally introduced into it, I distinguish w and and with that, the gap adjuster, the inner screen in which the measuring winding is located, the outer screen, which is placed an open magnetic conductor with an excitation winding, while the profile tips are mounted on the poles of the open magnetic conductor, the gap regulator is made in the form of an adjusting screw, a clamping plate and a damper, and the outer screen is made The frame is in the form of a frame and a bracket, connected with adjusting screws.