Experimental study of friction coefficient and wear rate of turned and ground mild steel surfaces sliding against smooth and rough SS304 counterfaces

Abstract

In the present study, friction coefficient and wear rate of stainless steel 304 (SS 304) sliding against mild steel are investigated experimentally. In order to do so, a pin on disc apparatus is designed and fabricated. Experiments are carried out when smooth or rough mild steel pin slides on SS 304 disc. Experiments are conducted at normal load 10, 15 and 20 N, sliding velocity 1, 1.5 and 2 m/s and relative humidity 70%. Variations of friction coefficient with the duration of rubbing at different normal loads and sliding velocities are investigated. Results show that friction coefficient is influenced by duration of rubbing, normal load and sliding velocity. In general, friction coefficient increases for a certain duration of rubbing and after that it remains constant for the rest of the experimental time. The obtained results reveal that friction coefficient decreases with the increase in normal load for SS 304 mating with smooth or rough mild steel counterface. On the other hand, it is also found that friction coefficient increases with the increase in sliding velocity. Moreover, wear rate increases with the increase in normal load and sliding velocity. The magnitudes of friction coefficient and wear rate are different depending on sliding velocity and normal load for both smooth and rough counterface pin materials.

Thermal and Mechanical Properties of Vinyltrimethoxysilane (VTMOS) Crosslinked High Molecular Weight Polyethylene (HMWPE)

“…After a certain period, the increase of roughness and other parameters may reach a steady value and then, the values of the coefficient of friction remains constant. At this time, the friction force becomes independent on the force acting on the softer material 36 .…”

“…In general, the thinner and more uniform and continuous the transfer film is, the lower the coefficient of friction. During the stationary test stage, however, oscillations of the coefficient of friction may occur due to local breakdown and recovery of the transfer film 35,36,38,39 . The mechanism of improvement in the wear resistance of the ultra high molecular weight polyethylene (UHMWPE) The resilience of the polyethylene crosslinked with 0.5 wt% of VTMOS is higher than that of the HMWPE.…”

“…The polymer molecular structure, viscoelastic behavior, surface texture and processing properties also have influence of the polymer tribological properties. Therefore, it is very important to simplify tests in order to exclude variables not significant for a given application 35,36 . In polymer friction, the main mechanisms of wear are adhesion, abrasion and fatigue.…”

Comportamiento tribológico de un acero inoxidable austenítico en tribómetro bola sobre anillo

“…Investigaciones previas han sido realizadas en tribómetros tipo espiga sobre disco a diferentes niveles cargas, velocidades y distancias de deslizamiento [1][2][3]. Sin embargo, aún no se conocen suficientemente algunas de sus propiedades o comportamientos ante las solicitaciones tribológicas, empleando un tribómetro tipo bola sobre anillo, siendo esta necesaria para desarrollar diseños de dispositivos óptimos en su durabilidad bajo condiciones de contacto no concordante.…”

The Effect of Lubrication on Tribological Properties of Bearing Materials Using Pin on Disc: A Review

“…For dry sliding wear test the disc is rotated in varying speed and applied the different load on pin based, and varying Sliding distance [34].Mohammad Asaduzzaman chowdhury et.al (2013) carried experiments using Pin on Disk mild steel Smooth and Rough Mild Steel Counter faces pins slides on SS 304 disc the presence of normal load and sliding velocity under dry lubrication conditions. The values of friction coefficient Decrease with the increase in normal load while friction coefficients increase with the increase in sliding velocity [35].Ranganath, M S et.al (2014) explored the friction and wear behaviors using Pin on Disk tribometer under dry conditions. The tribological properties as coefficient of friction and specific wear rate of Cylindrical Aluminium pin (Al-6061) of diameter 10 mm and the mild steel disc are investigated [36].…”