An Installation for Electrothermal Effects on a Workpiece

This paper presents a modernized installation for impacting a workpiece with electric current pulses whereby ensuring high quality of parts manufactured from titanium alloys. Electrical processes that occur when using a new method of switching an active-inductive load using a three-phase contactless thyristor starter are examined. The use of such a device can eliminate long transient processes during switching, improve control of the heating parameters of the workpiece and provide plasticization of the metal in short periods of time. Other positive effects of the three-phase contactless thyristor starter include the elimination of defects in the structure of the material, increase in the thermodynamic stability of the metals as well as in the structural strength and endurance, reduction of the anisotropy of the metals and the level of residual stress.

References

[1] Bratukhin A.G., Ivanov Yu.L., Mar’in B.N. Shtampovka, svarka, payka i termoobrabotka titana i ego splavov v aviastroyenii [Stamping, welding, soldering and heat treatment of titanium and its alloys in the aircraft industry]. Moscow, Mashinostroyeniye publ., 1997. 600 p.

[2] Murav’yev V.I., Bakhmatov P.V., Dolotov B.I. Obespecheniye nadezhnosti konstruktsiy iz titanovykh splavov [Ensuring the reliability of titanium alloy structures]. Moscow, Ekom publ., 2009. 752 p.

[3] Bratukhin A.G., Mar’in B.N., Murav’yev V.I. Sovremennyye tekhnologii aviastroyeniya [Modern aircraft technology]. Moscow, Mashinostroyeniye publ., 1999. 286 p.

[4] Mar’in B.N., Serafimov M.A., Mar’in S.B., Chernyshev A.V. Processing of Preforms. Forging and Stamping Production. Material Working by Pressure, 2008, no. 1, pp. 43–44 (in Russ.).

[5] Ivanov Yu.L., Mar’in B.N., Serafimov M.A., Mar’in S.B., Ivanov V.Yu., Chernyshev A.V. Stamping of Parts with Electro-Thermal Impact. Forging and Stamping Production. Material Working by Pressure, 2008, no. 2, pp. 18–24 (in Russ.).

[6] Mar’in S.B., Shpilev A.M, Burkov A.A., Khokhlov S.A., Volkov K.V., Mar’in B.N. Billet process technology by electric current short duration pulses. Blanking productions in mechanical engineering, 2009, no. 6, pp. 49–51 (in Russ.).

[7] Mar’in S.B. Installation and method of leadthrough of experimental researches of electro impulsive treatment of assembling purveyances under assembling of pipeline systems of aircrafts. Izvestiya Samarskogo nauchnogo tsentra Rossiyskoy akademii nauk, 2001, vol. 13, no. 4–2, pp. 420–424 (in Russ.).

[8] Mar’in B.N., Makarov K.A., Kuz’min V.F., Mar’in S.B., Shport V.I., Voytov V.N. Sposob goryachego deformirovaniya zagotovok [Method of blank ht deformation]. Patent RF no. 2171851, 2001. 4 p.

[9] Shport V.I., Murav’yev V.I., Ivanov Yu.L., Mar’in B.N., Kuz’min V.F., Mar’in S.B. Sposob goryachey shtampovki na gidropressakh [Method for hot forming in hydraulic presses]. Patent RF no. 2167017, 2001. 3 p.

[10] Murav’yev V.I., Chernyshev A.V., Merkulov V.I., Makarova E.A., Mar’in S.B. Ustroystvo dlya ispytaniya trubnoy zagotovki pri razlichnykh temperaturakh [Gear to test pipe billet at various temperatures]. Patent RF no. 2187794, 2002. 5 p.

[11] Murav’yev V.I., Yakimov A.V., Yakimov V.I., Chernyshev A.V., Mar’in S.B. Sposob termicheskoy obrabotki psevdo ?-titanovykh splavov [Method for handling of pseudo alpha-titanium-based alloys]. Patent RF no. 2241062, 2004. 6 p.

[12] Murav’yev V.I., Yakimov A.V., Mar’in S.B., Chernyshev A.V., Yakimov V.I., Mar’in B.N. Sposob opredeleniya temperatury polimorfnogo prevrashcheniya v dvukhfaznykh titanovykh splavakh [Method of measuring temperature of polymorph transformation in two-phased titanium alloys]. Patent RF no. 2248539, 2005. 6 p.

[13] Mar’in S.B., Sysoyev O.E., Shport R.V., Limankin V.V., Shpileva A.A., Khanov V.A. Ustroystvo dlya ispytaniya listovogo metalla na dvukhosnoye rastyazheniye [Device for testing sheet metal for biaxial tension]. Patent RF no. 124806, 2013. 10 p.

[14] Klimash V.S., Tabarov B.D., Getopanov A.Yu. Sposob vklyucheniya, vyklyucheniya i regulirovaniya napryazheniya transformatornoy podstantsii [Method for swit·shing-on, swit·shing-off and regulating voltage of transformer substation]. Patent RF no. 2622890, 2007. 8 p.

[15] Spravochnik po preobrazovatel’noy tekhnike [Converter Technique Handbook]. Ed. Chizhenko I.M. Kiyev, TexniKa publ., 1978. 447 p.

[16] Ivanov Yu.L. Razrabotka i osvoyeniye protsessov deforirovaniya listovykh zagotovok pod sborku letatel’nykh apparatov. Dokt. Diss. [Development and mastering of processes for deforming sheet blanks for assembly of aircraft. Doct. Diss.]. Vladivostok, 1999. 164 p.

[17] Bessonov L.A. Teoreticheskiye osnovy elektrotekhniki [Theoretical Foundations of Electrical Engineering]. Moscow, Vysshaya shkola publ., 1996, pp. 244–245.