Experimental Investigation of the Influence of Machining Condition on the Contact Sliding Behavior of Metals

1998 ◽  
Vol 120 (2) ◽  
pp. 395-400 ◽  
Author(s):  
Dae-Eun Kim ◽  
Dong-Hwan Hwang
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Friction And Wear ◽  
Dimensional Accuracy ◽  
Tribological Performance ◽  
Cutting Condition ◽  
Sliding Motion ◽  
Machined Parts ◽  
Friction And Wear Characteristics ◽  
Counter Surface

In many instances machined parts experience sliding motion while in contact with a counter surface. The performance of the contacting parts depends on their friction and wear characteristics. In this work the effects of the machining condition on the tribological performance of steel, brass, and duralumin are investigated. For steel, it is shown that the friction coefficient value remains about the same whereas the rate of wear varies as the cutting condition is altered. The friction coefficients for brass and duralumin were lower than that of steel and their tribological properties seem to be less sensitive to the machining condition. In conclusion, it is emphasized that the machining condition directly influences the surface integrity which in turn affects the tribological performance of the machined parts, and therefore, the machining condition for parts that experience contact sliding motion should be optimized for best tribological performance in addition to dimensional accuracy and surface roughness.

Experimental Investigation of Friction and Wear Characteristics of O-Ring

2009 ◽  
Vol 33 (10) ◽  
pp. 1125-1131 ◽  
Author(s):  
Jun-Chul Oh ◽  
Dae-Eun Kim ◽  
Hyun-Jun Kim ◽  
Mun-Hwan Kim ◽  
Chun-Il Kim
Keyword(s):  
Experimental Investigation ◽  
Friction And Wear ◽  
Wear Characteristics ◽  
Friction And Wear Characteristics

ON THE EFFECT OF WOVEN GLASS FABRIC ORIENTATIONS ON WEAR AND FRICTION PROPERTIES OF POLYESTER COMPOSITE

2007 ◽  
Vol 14 (03) ◽  
pp. 489-497 ◽  
Author(s):  
B. F. YOUSIF ◽  
N. S. M. EL-TAYEB
Keyword(s):  
Wear Resistance ◽  
Friction And Wear ◽  
Tribological Performance ◽  
Glass Fabric ◽  
Low Velocity ◽  
Wear And Friction ◽  
Polyester Composite ◽  
Pin On Disc ◽  
Friction And Wear Characteristics ◽  
Worn Surfaces

In this work, tribological investigations on the neat polyester (NP) and woven (600 g/m2)-glass fabric reinforced polyester (WGRP) composite were carried out. Friction and wear characteristics of the WGRP composite were measured in three principal orientations, i.e., sliding directions relative to the woven glass fabric (WGF) orientations in the composites. These are longitudinal (L), transverse (T), and parallel (P) orientations. The experiments were conducted using a pin-on-disc (POD) machine under dry sliding conditions against a smooth stainless steel counterface. Results of friction coefficient and wear resistance of the composites were presented as function of normal loads (30–100 N) and sliding distances (0.5–7 km) at different sliding velocities, 1.7, 2.8, and 3.9 m/s. Scanning electron microscopy (SEM) was used to study the mechanisms of worn surfaces. Experimental results revealed that woven glass fabric improved the tribological performance of neat polyester in all three tested orientations. In L-orientation, at a low velocity of 1.7 m/s, WGRP exhibited significant improvements to wear resistance of the polyester composite compared to other orientations. Meanwhile, at high velocities (2.8 and 3.9 m/s), T-orientation gave higher wear resistance. SEM microphotographs showed different damage features on the worn surfaces, i.e., deformation, cracks, debonding of fiber, and microcracks.

Granular Collision Lubrication: Experimental Investigation and Comparison to Theory

2007 ◽  
Vol 129 (4) ◽  
pp. 923-932 ◽  
Author(s):  
Karim N. Elkholy ◽  
M. M. Khonsari
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Friction Coefficient ◽  
Kinetic Theory ◽  
Rotational Speed ◽  
Applied Load ◽  
Vertical Displacement ◽  
Shear Cell ◽  
Sliding Motion ◽  
Annular Shear Cell

An experimental investigation of the friction and lift characteristics of granular lubrication is presented. Experiments are carried out to demonstrate the vertical displacement (lift) observed in an annular shear cell apparatus. Results are presented for the friction coefficient as a function of the rotational speed and the applied load for several surface roughness combinations. Simulations of the kinetic theory for the granular material are performed and compared to the experimental results. The experiments provide an evidence for the formation of granular lift between two disks undergoing sliding motion.

Tribological Characteristics of Different Components on C/C-SiC Composites Fabricated by Warm Compacted In Situ Reaction

2012 ◽  
Vol 268-270 ◽  
pp. 59-62
Author(s):  
Zhuan Li ◽  
Peng Xiao ◽  
Xiang Xiong
Keyword(s):  
Wear Rate ◽  
Friction And Wear ◽  
Volume Fraction ◽  
Tribological Performance ◽  
Hard Particle ◽  
The Coefficient Of Friction ◽  
Sic Composites ◽  
Friction And Wear Characteristics

C/C-SiC brake composites, based on reinforcement of carbon fiber and dual matrix of carbon and silicon carbide, were fabricated by warm compacted-in situ reacted process. Rules about the influence of different components on the friction and wear characteristics of the C/C-SiC composites are ascertained. As hard particle, the SiC has the function to the formation of friction film, which is in favor of increasing the coefficient of friction (COF) and decreasing the wear rate. The resin carbon plays the role of enhancing the COF, but they are easy to be cut and increase the wear rate. The graphite plays the lubrication function, and right volume content of graphite is helpful to forming friction film to reduce the wear rate. The C/C-SiC composite fabricated by the warm compacted-in situ reaction can with best tribological performance when the components volume fraction of carbon fibre, SiC, graphite and resin carbon are 15.5%, 37.0%, 22.1% and 20.8%, respectively, which the COF and the wear rate can reach the maximum and the minimun value of 0.44 and 1.1μm/cycle respectively.

Effects of surface roughness of roll metal pins on their friction and wear characteristics

Wear ◽  
2000 ◽  
Vol 239 (1) ◽  
pp. 69-76 ◽  
Author(s):  
Terumasa Hisakado ◽  
Kentarou Miyazaki ◽  
Akiyoshi Kameta ◽  
Satoru Negishi
Keyword(s):  
Surface Roughness ◽  
Friction And Wear ◽  
Wear Characteristics ◽  
Friction And Wear Characteristics

scholarly journals Tribological Performance of Microhole-Textured Carbide Tool Filled with CaF2

Materials ◽  
2018 ◽  
Vol 11 (9) ◽  
pp. 1643 ◽  
Author(s):  
Wenlong Song ◽  
Shoujun Wang ◽  
Yang Lu ◽  
Zixiang Xia
Keyword(s):  
Friction And Wear ◽  
Sliding Friction ◽  
Cutting Temperature ◽  
Cutting Speed ◽  
Tribological Performance ◽  
Temperature Sensitive ◽  
Dry Cutting ◽  
Wear Performance ◽  
Lubrication Effect ◽  
Friction And Wear Characteristics

To enhance the friction and wear performance of cemented carbide, textured microholes were machined on micro Electron Discharge Machining (EDM) on the tool rake face, and Calcium Fluoride (CaF2) powders were burnished into the microholes. The friction and wear characteristics of the microhole-textured tool filled with CaF2 were investigated using sliding friction tests and dry cutting tests. Results exhibited that the working temperature could affect the tribological performance of the microhole-textured tool filled with CaF2 due to the temperature-sensitive nature of CaF2. There is no obvious lubrication effect for the textured tool filled with CaF2 at room temperature, while it was shown to be more effective in improving tribological property at a cutting speed of higher than 100 m/min with a corresponding to cutting temperature of 450 °C. The possible mechanisms for the microhole-textured tool filled with CaF2 were discussed and established.

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