Evaluation of two commercially-available lubricants by means of ring test to AA 6061 F aluminum alloys

Materials Research

Rogério Alves Oliveira²  Leopoldo Alguero Koller¹  Lirio Schaeffer¹ 

[1] ,Gerdau Aços Finos PiratiniCharqueadas RS ,Brazil

关键词: friction;    lubricants;    aluminum alloys;    hot forging;   

DOI  :  10.1590/S1516-14392003000400028

来源: SciELO

【 摘 要 】

This paper shows friction results obtained through compression ring tests for two commercially-available lubricants (i.e., Oildag and Deltaforge) applied in the hot forging of aluminum alloys. The experiments were performed with AA 6061 F aluminum alloy samples with the goal of observing the behavior of each lubricant in several conditions of temperature (200, 300, and 450 °C), strain rates (1, 10 and 50 s-1), and strain (25, 50 and 75%). The friction coefficients for each lubrication condition were established by means of calibration curves determined from finite element calculations with the use of the PEP/Larstran software package. An Analysis-of-Variance approach for the ring's internal diameter was followed in order to evaluate the performance of the lubricants. The results indicated that the Oildag lubricant presents a better stability as well as lower friction coefficients than the Deltaforge lubricant for the range of conditions tested, which translates into a better friction condition at die-part interface.

【 授权许可】

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