Experimental Study on the Tribological Properties of Powder Lubrication under Plane Contact

2010 ◽  
Vol 53 (2) ◽  
pp. 274-279 ◽  
Author(s):  
Wang Wei ◽  
Liu Xiaojun ◽  
Liu Kun ◽  
Li Hongxian
Keyword(s):  
Experimental Study ◽  
Tribological Properties ◽  
Plane Contact ◽  
Powder Lubrication

Experimental Study on the Lubrication Behaviors of Seawater-Lubricated Thordon Bearings

2012 ◽  
Vol 500 ◽  
pp. 297-300
Author(s):  
You Qiang Wang ◽  
Wen Li Sun
Keyword(s):  
Experimental Study ◽  
Friction Coefficient ◽  
Tribological Properties ◽  
Experimental Studies ◽  
Experimental Results ◽  
Bearing Clearance ◽  
Increasing Load

Seawater lubricated thordon bearing is one of the most appropriate bearings widely used in submerged pump for drainage. The apparatus for studying the lubrication behaviors of the seawater lubricated thordon bearings has been devised and established in the paper. The experimental studies on the tribological properties of the thordon bearings have been conducted under different load and velocity using the apparatus. Effects of load and velocity on friction coefficient of the thordon bearings have been estimated. The experimental results show that the friction coefficient decreases with increasing velocity; the friction coefficient decreases gradually at first and then decreases sharpy with increasing load; the friction coefficient increases sharply with the rising temperature. The experimental results also indicate that there is an appropriate bearing clearance for which the friction coefficient is up to minimum.

Experimental Study on Tribological Properties of Graphite-MoS2 Coating on GCr15

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
F. M. Meng ◽  
Z. T. Cui ◽  
Z. T. Cheng ◽  
H. L. Han
Keyword(s):  
Experimental Study ◽  
Coefficient Of Friction ◽  
Tribological Properties ◽  
Rotational Speed ◽  
Applied Load ◽  
Bearing Steel ◽  
Experimental Results ◽  
Gcr15 Bearing Steel ◽  
Mos2 Coating ◽  
Scar Width

The graphite-MoS2 coated on GCr15 bearing steel is prepared through air spraying and its tribological performances are investigated experimentally. Then its coefficient of friction (COF) and wear scar width (WSW) are investigated through the MFT-5000 multifunction tribometer and other test equipments. The experimental results show that the addition of the graphite can effectively decrease the COF and narrow the WSW of the MoS2. There exists a critical applied load for wearing out the surface with the graphite-MoS2 coating. Moreover, there exists an optimal rotational speed of 500 rpm to decrease the COF and WSW of the GCr15 steel.

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