Dynamic wetting of rolling oil on aluminum surfaces

  • Zhou Ya-jun  (周亚军)
  • Zhou Hong-hui  (周宏慧)
Article
Received:
Accepted:

Abstract

Static and dynamic contact angles of stock oil and its solutions with additives(fatty acid, fatty alcohol, fatty methyl ester usually used in rolling aluminum) were measured on aluminum surface (Alloy 1145) by sessile drop technique on an OCA35 dynamic contact angle tester. The effect of additive on the drop spreading was investigated as well. It is shown that the drop spreads very quickly in the first 500 ms after the lubricant contacts with the aluminum surface, and then does slowly later. The dynamic contact angle decreases exponentially with time. In contrast to the stock oil, although addition of polarity additive of long chain alkyl into stock oil is able to decrease the surface tension of solutions, it weakens the wetting dynamic, which results from the adsorption at the expanding solid/liquid interface. Among the same long chain polarity organic compounds used, dynamic wetting decreases in the order of fatty acid, fatty alcohol and fatty ester. The blend of fatty alcohol and fatty methyl ester can improve the oil wetting dynamics and promote the lubricant spreading.

Key words

aluminum surface dynamic wetting spreading rolling oil additive 
This is a preview of subscription content, log in to check access.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    BUCKLEY D H. Surface Effects in Adhesion, Friction, Wear and Lubrication[M]. New York: Elsevier Scientific Publishing Company, 1981: 553–565.Google Scholar
  2. [2]
    LI Sheng-hua, ZHOU Chun-hong, ZHANG Rui-jun, et al. Role of chemistry in tribochemistry progress[J]. Tribology, 2002, 21(1): 76–78. (in Chinese)Google Scholar
  3. [3]
    HUANG Wei-jiu, TANG Yuan-qiang, LI Li, et al. Study on the plate-out ability of emulsion[J]. Synthetic Lubricants, 1999, 26(1): 4–8. (in Chinese)MathSciNetGoogle Scholar
  4. [4]
    HUANG Wei-jiu, LI Fen-fang, DONG Jun-xiu, et al. Study on the relativity between wetting ability and the composition of emulsion[J]. Lubrication Engineering, 2002, 29(2): 47–49.Google Scholar
  5. [5]
    YAN Hong-zhi. Study on lubricating and wetting of O/W emulsion on the metal surface[J]. Synthetic Lubricants, 1995, 22(1): 4–8. (in Chinese)Google Scholar
  6. [6]
    MAO Da-heng. Development of a new generation of additives for aluminum rolling lubrication[J]. Trans Nonferrous Met Soc China, 1996, 6(2): 138–143.Google Scholar
  7. [7]
    ZHOU Ya-jun, ZHOU Li, MAO Da-heng, et al. Advance in tribochemistry of lubricant used in aluminum rolling[J]. Lubrication Engineering, 2004(3): 110–113. (in Chinese)Google Scholar
  8. [8]
    HUANG Wei-jiu, TANG Yuan-qiang, ZHOU Ya-jun, et al. Tribochemical changes of dodecane and stearic acid[J]. The Chinese Journal of Nonferrous Metals, 1999, 9(3): 636–640. (in Chinese)Google Scholar
  9. [9]
    MAO Da-heng, WANG Wei-juan, TAN Jian-ping, et al. Ordered molecular layer structure of lubricating oil adsorbed films[J]. Trans Nonferrous Met Soc China, 2001, 11(1): 58–62.Google Scholar
  10. [10]
    TAN Yuan-qiang. Tribology Design of Lubrication Interface in Metalworking[D]. Changsha: Central South University of Technology, 1999. (in Chinese)Google Scholar
  11. [11]
    BLAKE T D, DE CONINCK J. The influence of solid-liquid interactions on dynamic wetting[J]. Advances in Colloid and Interface Science, 2002, 96: 21–36.CrossRefGoogle Scholar
  12. [12]
    WANG Zhu-tang, TIAN Rong-zhang. The Fabrication Manual of Aluminum and its Alloy[M]. Changsha: Central South University Press, 2000: 593. (in Chinese)Google Scholar

Copyright information

© Published by: Central South University Press, Sole distributor outside Mainland China: Springer 2007

Authors and Affiliations

  • Zhou Ya-jun  (周亚军)
    • 1
  • Zhou Hong-hui  (周宏慧)
    • 1
  1. 1.School of Mechanical and Electrical EngineeringCentral South UniversityChangshaChina

Personalised recommendations