S'omichev A. Development of methods for reduction of axial forces during cold Pilger rolling of thin-walled pipes of high quality and extended sizes

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0408U002773

Thesis Registration Form

0408U002773.pdf

Applicant for

S'omichev Andriy Victorovich

Specialization

05.03.05 - Процеси та машини обробки тиском

Date of defense

15-04-2008

Specialized Academic Board

Д 08.084.02

National Metallurgical Academy Of Ukraine

Essay

A further development was given to definition of axial forces in deformation zone during cold Pilger rolling that provided a possibility to theoretically define a speed mode of rolling that guarantees minimal value of axial forces. Definition of axial forces is used for further improvement the quality of metal and extending pipe sizes. Mechanism for rolls' speed regulation is proposed. Polarizing-optical method is used for the first time for definition of stress and deformation in the cold-rolling mills. The results of the research have been given to Joint Stock Company "Dnipropetrovsk Works of precision pipes" for engineering application in cold Pilger rolling of thin-walled pipes production technology. The results of the research are utilized in the curriculum of the National metallurgical academy of Ukraine.

Thesis supervisor

Danchenko Valentin Nikolayevich

Official opponents

Фурманов Валерій Борисович
Кекух Станіслав Миколайович

Files

aref.doc

dis1.doc

Similar theses

0424U000044

Andrii Shtuts

Improvement of rolling stamping processes on the basis of modeling of the mechanics of forming blanks

0421U103937

Glazko Vladyslav V

The improvement of the design of the elastomeric compensator for eccentric loads of the "press-die" system with parallel transfer of the technological force vector

0421U103225

Mishchenko Oleksii V

Development of the theory of formation and reduction of the transverse wall thickness variation of cold-rolled tubes from titanium alloys

0521U101599

Borovik Pavel Vladimirovich

Development of theoretic foundations and improvement of technology and equipment of separation operations processes in rolling production

0521U101565

Hrudkina Natalia

Development of energy methods for the analysis of technological modes and improvement the processes of precise volumetric stamping by extrusion.