SU1233092A1 - Device for non-destructive testing of article surface - Google Patents

Abstract

The invention allows to improve the quality of flaw detection by increasing the resolution flaw detection. The device comprises two flat electrodes, a voltage generator connected to the electrodes, means for fixing the test article on the first electrode, and means for bringing the electrodes together to establish the minimum distance between them at a fixed product. The inner surface of the second electrode is covered with a layer of emulsion. 2. silt

Description

This invention relates to a photographing method, and my names to photographing high frequency currents in zero.

The purpose of the invention is to improve the quality of flaw detection by increasing the resolution of flaw detection.

Figure 1 shows a device for flaw detection of the surface of products, a general view; Fig. 2 shows a densitogram of a negative electron-discharge image of a surface defect in the form of a rectangular groove obtained using the proposed device.

The device comprises a flat electrode 1, on the inner surface of which a layer of photo emulsion 2 is applied, a controlled article 3 with a surface defect in the form of a rectangular groove 4, and an electrode 5 (a voltage generator and means for fixing the controlled product on the first electrode 5 and bringing electrodes to establish the minimum distance between them with a fixed product 3 (not shown),

The proposed device works as follows

A thin layer of emulsion 2 is applied to the inner surface of the flat electrode 1 using emulsion No. 1654, soaked from large photographic plates for industrial and scientific purposes of 9x12, reproduction

high contrast). After the photo emulsion 2 dries out somewhat (its surface), the supply means the minimum distance controlled product 3, which is previously fixed by means of fixation on the surface of the test product 3 There is a rectangular groove 4, the opening width of which is 0.05 mm. The exposure is carried out after supply, to the electrodes 1 and 5 of the voltage from the high voltage generator. Experimental studies of the proposed device are carried out with the following Parameters voltage 445V, frequency 260 kHz, the time of exposure 1c

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20 formula of the invention

A device for flaw detection of the surface of products, containing two flat electrodes, a voltage generator connected to the electrodes, means for fixing the tested product on the first electrode and means for bringing the electrodes together to establish the minimum distance between them at a fixed product, a layer of emulsion, characterized In order to improve the quality of the defectoscopy by increasing the resolution of the defectoscopy, the inner surface of the second electrolyte is covered with a layer of emulsion.

FPS 45fj 27J)

ripr, n4B.-polygram. pr-tie, Uzhgorod, st. Project, 4

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Circulation 436 Subscription

Claims (1)

20 claims An apparatus for flaw detection surface of articles comprising two .roliruemogo products 5 on the first electrode and the convergence electrodes for usta- ² tained minimum distance therebetween at a fixed item 3 not displaying). The proposed device operates as follows. 3 Photo emulsion 2 is applied on the inner surface of the flat electrode 1 with a thin layer 2. Emulsion No. 1654 is used, soaked with a conventional flat electrode photoplastic, a voltage generator connected to the electrodes, means for fixing the product to be monitored on the first electrode and means for bringing the electrodes together to establish the minimum distance between them at a fixed product, a photoemulsion layer, characterized in that, in order to improve the quality of the flaw detector by increasing the resolution of the flaw detector, the inner tinok for industrial and scientific purposes, size 9x12, reproduction 35 the surface of the second electrode and a layer of emulsion. cover-