Publication detail

COOLING EFFICIENCY OF VARIOUS EMULSIONS DURING COLD ROLLING

HNÍZDIL, M. CHABIČOVSKÝ, M.

Original Title

COOLING EFFICIENCY OF VARIOUS EMULSIONS DURING COLD ROLLING

Type

miscellaneous

Language

English

Original Abstract

Emulsions are frequently used for the cooling and lubrication of working rolls during the cold rolling. The fact that the lubrication and cooling are not separable makes the optimization of both functionalities difficult. The higher emulsion temperature decreases the cooling efficiency compared to cold water. Heat transfer and fluid flow laboratory (Czech Republic), CRM (Belgium), Tata steel (Netherlands) and Henkel (Germany) cooperated on the increasing of a cooling efficiency during cold rolling. Part of this research was focused on an influence of the emulsion composition on a cooling intensity. The cooling efficiency was laboratory investigated. The stainless steel sample with thermocouple was heated and then it was cooled by a nozzle. Tests were performed with various emulsions and pure water. The heat transfer coefficient was computed from measured temperatures. The cooling intensity (heat transfer coefficient) of all tested emulsions was similar but an increase of the cooling intensity was found with water. Further various emulsions concentrations were tested. Results showed decreasing cooling intensity with increasing oil concentration. Adding additives therefore is thought to cause a noticeable decrease of the cooling intensity.

Keywords

Cold rolling cooling; emulsion concentration; cooling intensity, additives

Authors

HNÍZDIL, M.; CHABIČOVSKÝ, M.

Released

1. 10. 2019

Location

Technical contribution to the 11 th International Rolling Conference, October 1st-3rd, Sao Paulo, SP, Brazil

Pages from

1

Pages to

9

Pages count

9

BibTex

@misc{BUT159801,
  author="Milan {Hnízdil} and Martin {Chabičovský}",
  title="COOLING EFFICIENCY OF VARIOUS EMULSIONS DURING COLD ROLLING",
  year="2019",
  pages="1--9",
  address="Technical contribution to the 11 th International Rolling Conference, October 1st-3rd, Sao Paulo, SP, Brazil
",
  note="miscellaneous"
}