Mazur S. The regularities of interaction of metal under deformation with technological instrument and the raise of efficiency of manufacturing tubes in the units with lengthwise mandrel rolling mills

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0406U001947

Thesis Registration Form

0406U001947.pdf

Applicant for

Specialization

  • 05.03.05 - Процеси та машини обробки тиском

04-04-2006

Specialized Academic Board

Д 08.084.02

National Metallurgical Academy Of Ukraine

Essay

A solution of the scientific and technical problem, connected with determining the regularities of interaction of metal under deformation with technological instrument: mandrel (piercing, short and long mandrel for the lengthwise rolling), round roll passes, tilter’s rollers was developed. The relationships for calculation of the critical pressure initiating the plastic flow of the layers of the plug nose adjoining the contact were obtained on the base of the mentioned solution; the criterion determining the limiting conditions of the mandrel work capacity was developed, the analysis of conditions of tangential stability of while rolling was carried-out. An algorithm was developed for calculating the thickness of the lubricant layer between the internal surface of the tube and mandrels (short and long). The area of applicability of this technology is manufacturing hot-rolled tubes.

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Files

01_sod.doc

02_oboznachenija.doc

03_Vved.doc

04_Part 1.doc

05_Part 2.doc

06_Part 3.doc

07_Part 4.doc

08_Part 5.doc

10_ Vivodi.doc

11_Literat.doc

12_PR.doc

13_PR A.doc

14_PR B.doc

15_PR V.doc

16_PR G.doc

AREF.doc

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