Causes of Formation and Ways of Elimination of Defects on the Internal Surface of Upset Tube Ends

• Published in: Metal science and heat treatment Vol. 58; no. 1-2; pp. 33 - 36
• Main Authors: Bogatov, A. A., Erpalov, M. V.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01-05-2016; Springer
• Subjects: Billets; Calibration; Characterization and Evaluation of Materials; Chemistry and Materials Science; Classical Mechanics; Defects; Engineering Thermodynamics; Formations; Heat and Mass Transfer; Hydraulic presses; Materials Science; Metallic Materials; Tubes; Upsetting; Walls; tubing; upsetting of tube ends; drill tubes; product quality; finite-element simulation
• ISSN: 0026-0673; 1573-8973; 1573-8973
• DOI: 10.1007/s11041-016-9960-4

Causes of formation of defects on the internal surface of oil tubes with ends formed by upsetting in SMS Meer hydraulic presses are considered. Interrelated requirements on billets and calibration of the equipment aimed at intensifying the upsetting process in one pass with growth of the wall thickening factor to about 1.85 are formulated.