SU95214A1 - Camera for reverse x-ray metal imaging - Google Patents

Description

The subject of the invention is a camera for reverse metal x-ray imaging, equipped with a device that rotates a translucent metal sample, for example, using an electric motor enclosed inside the inner chamber.

The described camera is more coBepHJCHHOH in comparison with the known cameras of a similar kind, since it allows the recording of a rotating sample at high temperatures.

For this purpose, the camera is equipped with an electric heater mounted directly on the rotating axis of the sample derm, on which are mounted contact rings for supplying an electric current to the heater.

FIG. Figure 1 shows the schematic diagram of the camera described; in fig. 2 scheme of its focus. The housing 1 of the camera is equipped with three windows. They are: the central 2 and two; lateral 3. These windows allow to obtain two interference reflections with distinguished angles of reflection. The primary beam of x-rays coming out of the point focus 4 of the x-ray tube hits the sample 5 through the central window 2. The rays reflected at a smaller angle are focused on the cassette 6 worn on the lid 7 of the chamber; the rays reflected at a large angle are focused on the cassette 8, worn, on the cathode 9 of the x-ray tube.

The focus of the X-ray tube, the places of reflection of the interference lines from the sample and the place of their focusing on the 6/8 cassettes are located on the focusing circle 10.

Comparing the intensity of the two indicated interference lines, it is possible to study with sufficient accuracy in a wide temperature range the processes associated with the distortion of the crystal lattice of the material (aging processes, plastic deformation, kinetics of phase recurrence, annealing, recrystallization, etc.).

During the shooting process, the Sample under investigation can be rotated by means of a rotary motor // with a gearbox 12 (Fig. 1) enclosed within the chamber. This ensures uniform heating of the test.

sample, allows radiographic coarse specimens to be radiographed and reduces the effect of their texture on the appearance of the radiograph. Test sample 5 is mounted directly on an electric heater 13 mounted on the rotating axis 14 of the sample holder 15. Two pairs of slip rings 16 and 17 are also installed on axis 14. The single rings 16 serve to supply electric current to the heater. -.- ly, others. J7-g to connect the recording device, adjust its device to the platinum-platinum-rhodium

An X-ray camera for reverse metal imaging, equipped with a device for rotating a translucent metal sample, for example, using an electric motor enclosed inside the chamber, characterized in that

thermocouple 18, having a temperature of the sample.

The mechanism for rotating the sample is enclosed in a housing 19 having double walls for cooling with water. The casing 19 together with the heat shield 20 forms a kind of thermostat.

A rectangular tube 2 serves to cool the back of the housing 1 and the edges of the heat shield, and 7 special ring channels in the cover to cool the side windows 3 and the covers. Air is evacuated from the chamber through t pub. 22.11

Subject invention

shooting a rotating sample at high temperatures, an electric heater is applied, mounted directly on the rotating axis of the sample holder, provided with contact rings for supplying electric current to the heater.

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