Advertisement

Journal of Materials Engineering

, Volume 9, Issue 2, pp 191–198 | Cite as

New high strength large diameter pipe steels

  • W. M. Hof
  • M. K. Gräf
  • H. G. Hillenbrand
  • B. Hoh
  • P. A. Peters
Article

Abstract

Accelerated cooling after rolling represents a further development of the thermomechanical treatment designed to optimize alloying. In 1983, after extensive test series, a system for accelerated cooling—the Mannesmann Cooling System (MACOS)—was built at the Mülheim plate rolling mill. The design and control principles of this system are described, and the layout is schematized. The principle of using top and bottom water curtains ensures uniform cooling, even in the case of extreme plate widths. All system functions are controlled and monitored via a process computer. Using the production of a steel3-the GRS 550 (X 80), characterized by 0.08% C, 1.9% Mn, 0.04% Nb and 0.02% Ti—as an example, the reliability of this new combined method—TM MACOS—is verified.

Keywords

Ferrite Bainite Pearlite Weld Metal Niobium Carbide 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    M.K. Gräf, F.K. Lorenz, P.A. Peters, and P. Schwaab, Relationship between microstructure and mechanical properties of TM-treated large-diameter pipe steels, inHSLA Steels-Technology and Application, ed. ASM Metals Park, Ohio, 1984, pp. 801–807.Google Scholar
  2. 2.
    M.K. Gräf, H.-G. Hillenbrand, and P.A. Peters, Accelerated cooling of plate for high-strength large diameter pipe, inAccelerated Cooling of Steel ed. AIME Warrendale, Pennsylvania, pp. 165–179, 1986.Google Scholar
  3. 3.
    P.A. Peters, C.F. Düren, and M.K. Gräf, Development and Production of X 80 and GRS 550 TM, Seminar of EPRG/AGA Italy, 1985.Google Scholar

Copyright information

© Springer-Verlag New York Inc. 1987

Authors and Affiliations

  • W. M. Hof
    • 1
  • M. K. Gräf
    • 1
  • H. G. Hillenbrand
    • 1
  • B. Hoh
    • 1
  • P. A. Peters
    • 1
  1. 1.Mannesmann RöhrenwerkeDusseldorfFRG

Personalised recommendations