Abstract
Load-dependent power loss is a major contributor to power loss in gear transmission systems. In this study, pin-on-disc frictional and FZG efficiency experiments were conducted with powder metallurgy (Distaloy AQ + 0.2 %C) and wrought material (16MnCr5) combinations. The gear mesh torque loss from gear efficiency tests and the friction coefficient from the pin-on-disc tests were then compared. The trend for both test series was the same. The combination of 16MnCr5 in contact with Distaloy AQ + 0.2 %C shows the lowest coefficient of friction and gear mesh torque loss, followed by the combination of Distaloy AQ + 0.2 %C in contact with itself and finally the combination of 16MnCr5 in contact with itself.
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Abbreviations
- PM:
-
Powder metallurgy
- RS:
-
16MnCr5
- AQ:
-
Distaloy AQ + 0.2 %C
- A–B:
-
Disc–pin/gear–pinion
- \(T_{c}\) :
-
Load (N m)
- \(T_{\text{T}}\) :
-
Total torque loss (N m)
- \(\omega\) :
-
Rotation speed (rpm)
- t :
-
Time (s)
- η :
-
Dynamic viscosity (Pas)
- \(P_{\text{T}}\) :
-
Total power loss (W)
- \(P_{\text{mesh}}\) :
-
Load-dependent power loss (W)
- \(P_{\text{spin}}\) :
-
Load-independent power loss (W)
- \(M_{rr}\) :
-
Rolling friction moment (Nm)
- \(T_{\text{l}}\) :
-
Load-dependent torque loss (Nm)
- λ :
-
Surface energy (J)
- ρ, ρ 0 :
-
Density
- E, E 0 :
-
Young’s modulus (Gpa)
- ν, ν0 :
-
Poisson’s ratio
- z :
-
Number of teeth
- \(m_{n}\) :
-
Normal module
- B :
-
Gear width (mm)
- α :
-
Pressure angle
- \(d_{\text{b}}\) :
-
Base diameter (mm)
- \(d_{\text{a}}\) :
-
Tip diameter (mm)
- \(d_{\text{f}}\) :
-
Root diameter (mm)
- a :
-
Centre distance (mm)
- β :
-
Helix angle
- \(M_{\text{sl}}\) :
-
Sliding friction moment (Nm)
- \(T_{\text{bearing}}\) :
-
Load-dependent bearing loss (Nm)
- T ab :
-
Adhesive energy of surface a and b (J)
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Acknowledgments
We would like to thank Dr. Michael Andersson and Persson Marcus from Höganäs AB for their valuable discussion and technological support. This project was financially supported by Höganäs AB.
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This article is part of the Topical Collection on STLE Tribology Frontiers Conference 2014.
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Li, X., Olofsson, U. FZG Gear Efficiency and Pin-on-Disc Frictional Study of Sintered and Wrought Steel Gear Materials. Tribol Lett 60, 9 (2015). https://doi.org/10.1007/s11249-015-0582-6
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DOI: https://doi.org/10.1007/s11249-015-0582-6