Mohammad Z. Improvement and implementation of roll pass designing methods and large diameter pipe billet production processes in billet blooming mills

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0407U000244

Thesis Registration Form

0407U000244.pdf

Applicant for

Specialization

  • 05.03.05 - Процеси та машини обробки тиском

21-12-2006

Specialized Academic Board

Д 11.52.01

Essay

The object - process of rolling a large diameter purveyances in billet blooming mill; the purpose - development and realization a through industrial technology of production of katanih pipe purveyances by a diameter more than 275 mm; the methods - theoretical analysis, experimental-industrial researches, statistical treatment; the devices - pyrometers, electronic microscope, ultrasonic devices, computing engineering; the results - a method of analysis of formoizmeneniya metal at rolling in calibers, criterion of stability of roll for the terms on cage blooming mill, not equipped by a retaining and contamination with non-metallic inclusions, the method of computation of calibration of rollers for rolling of purveyances of round section, technical and technological decisions for production of purveyances of large diameter in the conditions in billet blooming mill; the novelty - the criterion of stability of roll is first offered, the methods of analysis of formoizmeneniya metal are developed at rollingin calibers and the mechanism of flow of metal in longitudinal and transversal directions in the caliber of a new form is developed, the method of computation of calibrations of rollers for rolling of purveyances of round section is improved, classification of technological charts of application of neprerivnolitih purveyances for production of besshovnih pipes of large diameter is first offered; The thesis results were introduced in the blooming mill of CJSC MMW ISTIL (Ukraine).

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