SU768828A1 - Method of tempering articles in electrolyte - Google Patents

Description

1 type, formed in the electrolysis of electrolyte and on the surface of the product,

V destroys, improving heat dissipation from the heated surface of the product to the electrolyte. : - - Example. Quenching in the electrolyte were subjected to samples of steel 45 and U10;

size 0 10x25; deep dive. ;,

, 3 electrolyte 7 mm.

 The electrolyte used is W% aqueous solution of sodium carbonate. The voltage of the direct current passed through the product-electrolyte circuit was 180.190 and 200 volts, the current density being 4.6-5.4 A / cm at temperature.

Electrolyte 50-C.

Controlled

Option processing characteristics.

768828

Duration of heating is 12 s. The excitation of ultrasonic oscillations in the electrolyte was carried out using the magnetostricch ion transducer PMS-22 and the ultrasonic generator UZG-2-10. Quenching was carried out without ultrasonic action,

 excitation of ultrasound during cooling after switching off the current and with continuous excitation of ultrasonic oscillations both in the process of heating and during cooling i

Quality control of the hardened layer was carried out by determining the microhardness of the hardened end surface and microstructural analysis: reTable

steel grade

45

10

The voltage in the circuit of the product.-electrolyte. volt

and cooling without ultrasound

The arithmetic average value of microimpression of ultrahardness, H 200 sound when cooled.

The effects of ultrasound during heating and cooling. .

Without ultrasound

Standard deviation of values

Exposure to ultra-microhardness., H 200 sound when cooled.

The effects of ultrasound during heating and cooling.

The presence of TBT

Without Ultrasound parts on top. Ultrasonic sound during cooling.

Exposure of ultrasound during heating. And chill. :

78D 781 759 884 963 936 768 841 890 P25 I 142 115

867 893 819 1157 1152 115

66 77 102 85

94 16 28 20 17 21

21

22

. 15

nineteen

eat eat eat eat eat eat eat eat no no no no no

no no no no no no results of measurements of microhardness were processed by methods of mathematical statistics. The data obtained are given in Table., - -., ---- Analysis of the data obtained shows that ultrasound exposure to electrolyte stabilizes the quality of hardened specimens by eliminating the formation of soft spots. The method of quenching products in elektrolitol, including ignition by passing a current in a circuit, a product, an electrolyte, and cooling in the same electrolyte after the current is turned off, since , in order to quench hardening due to the exclusion of punctures (ultrasounds are excited in the electrolyte, oscillations). 2. The method according to claim 1, characterized in that the ultrasonic oscillations in the electrolyte excite from the moment of current rejection before the end of cooling. 3, Pop. 1, different method and with the fact that ultrasonic vibrations in the electrolyte excite when heated and cooled.Sources of information taken into account during the examination: 1.Iryomstvo Armenia, 1970, 8, p. 3. Yasnogorodsky I.3. Heating of metals and alloys in the electrolyte, Mashgiz, 1949. i 128 p.

Claims (3)

Claim/ 1. The method of quenching products ~ electrolyte, including heating by passing current in the product-electrolyte circuit and cooling in the same electrolyte after disconnection? current,: about a hl a = .yu and ys by the fact that, in order to improve the quality of hardening due to the exclusion of Friday- —— .. .. (toasts, in the electrolyte excite ultrasonic vibrations., 2. The method of pop. 1, about. This is due to the fact that ultrasonic vibrations in the electrolyte excite cooling cooling from the moment the current is turned off. . 3. The method of pop. 1, characterized in that the ultrasonic vibrations in the electrolyte excite when heated and cooled.