Synkov O. Development of twist extrusion process of the billets from noncompact materials.

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0411U001609

Thesis Registration Form

0411U001609.pdf

Applicant for

Specialization

  • 05.03.05 - Процеси та машини обробки тиском

23-02-2011

Specialized Academic Board

Д12.105.01

Essay

The method of twist extrusion as a way to consolidate the metal noncompact material to create short and long-powder blanks with high density and sufficient strength was further developed in this thesis. It was experimentally and theoretically investigated the influence of the back pressure and the accumulated strain on the properties of noncompact blanks after the twist extrusion. It was shown that at a sufficient level of back pressure the TE process allows to compact the powders up to the theoretical values (97 - 99.6%) of relative density. The stability of the process of semi-continuous twist extrusion of powder materials was investigated. It was shown that lower threshold value of backpressure must be ensured for a steady behavior of the process. Based on studies, the technology which provides long-length consumable electrodes made of titanium sponge for the production of titanium by the chamber electroslag remelting has been developed. Application of this technology instead of conventional improved the quality of the electrodes, increase the output of cast titanium for one cycle of melting and significantly reduce its cost.

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Files

aref.doc

disser_Синков--часть_1_Содержание-(ВВЕДЕНИЕ).doc

disser_Синков--часть_2_Раздел 1.doc

disser_Синков--часть_3_Раздел 2.doc

disser_Синков--часть_3_Раздел 2.doc

disser_Синков--часть_4_Раздел 3.doc

disser_Синков--часть_5_раздел 4.doc

disser_Синков--часть_6_раздел_5.doc

disser_Синков--часть_7_приложения.doc

disser_Синков--часть_8_литература.doc

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