Scuffing behavior of gray iron and 1080 steel in reciprocating and rotational sliding

Han, Jiman; Zhang, R.; Ajayi, O. O.; Barber, Gary C.; Zou, Qian; Guessous, Laila; Schall, David; Alnabulsi, S

doi:10.1016/j.wear.2010.11.061

Cited by 31 publications

(19 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…7 and 8). The importance of considering the relevance of scuffing tests was also demonstrated by Han et al [16], who showed that unidirectional sliding and reciprocating sliding gave opposite scuffing performance ranking for grey cast iron and steel. Although scuffing testing is not unique in this respect, the complex nature of scuffing and the limited understanding of the scuffing process occurring in ship engines does make it particularly demanding.…”

Section: Discussionmentioning

confidence: 87%

“…Configurations include pin-on-twin (one cylinder reciprocating on two) [15], ball-on-flat (reciprocating and rotating) [1,16], cylinder-on-plate (pivoting) [17], pin-ondisc/block-on-ring (rotating) [18,7]. Most test procedures include an increase in the severity of the sliding contacts, for example by increase of speed [1], load [16,7] or by starved lubrication [18]. Some procedures do not include any increase in severity [15,17].…”

Section: How Is Scuffing Simulated In Lab Scale?mentioning

confidence: 99%

“…Ayaji et al [1] tested scuffing resistance with fully immersed contacts, but performed their tests in diesel fuel oils, which are not as lubricious as the fully formulated cylinder oil used in the present study. Scuffing tests have also been performed using polyalphaolefin (PAO) [16,7], and hexadecane [1]. Qu et al…”

Section: Higher Friction Due To Higher Normal Forcesmentioning

confidence: 99%

See 2 more Smart Citations

Testing scuffing resistance of materials for marine 2-stroke engines – Difficulties with lab scale testing of a complex phenomenon

Olander

Eskildsen²,

Fogh³

et al. 2015

Wear

View full text Add to dashboard Cite

Optimising sliding materials of marine two-stroke diesel engine cylinders for reduced risk of scuffing is imperative because of the high costs associated with replacing the cylinder liner. But how can a complex and poorly understood phenomenon such as scuffing be tested? This study investigates the potential of material selection based on lab tests. Experience from ship operation is combined with analysis of lab scale scuffing tests to evaluate the possibilities of gaining applicable knowledge from scuffing testing. Two piston ring materials, a grey cast iron and a plasma sprayed cermet coating, both currently used in engines, were tested. Each of the materials was tested with two surface characters, achieved by run-in in a real engine and by fine grinding respectively. The ranking of the two materials proved to differ between the two surface characters. In the tests, scuffing could only be detected when all oil had become removed from the contact by being adsorbed by agglomerated wear debris and scraped away. This and other critical mechanisms behind scuffing in the tests are thoroughly discussed and compared to possible mechanisms taking place in the engine.

show abstract

Section: Discussionmentioning

confidence: 87%

Section: How Is Scuffing Simulated In Lab Scale?mentioning

confidence: 99%

Section: Higher Friction Due To Higher Normal Forcesmentioning

confidence: 99%

See 1 more Smart Citation

Testing scuffing resistance of materials for marine 2-stroke engines – Difficulties with lab scale testing of a complex phenomenon

Olander

Eskildsen²,

Fogh³

et al. 2015

Wear

View full text Add to dashboard Cite

show abstract

“…Configurations include pin-on-twin (one cylinder reciprocating on two) [14], ball-on-flat (reciprocating and rotating) [1,15], cylinder-on-plate (pivoting) [16], pin-on-disc/block-on-ring (rotating) [9,17]. Most test procedures include an increasing severity of the contact conditions, for example by increasing the speed [1], load [9,15] or by starving the lubrication [17].…”

Section: How Is Scuffing Simulated In Lab Scale?mentioning

confidence: 99%

“…Most test procedures include an increasing severity of the contact conditions, for example by increasing the speed [1], load [9,15] or by starving the lubrication [17]. Some procedures do not include any severity increase [14,16].…”

Section: How Is Scuffing Simulated In Lab Scale?mentioning

confidence: 99%

Scuffing resistance testing of piston ring materials for marine two-stroke diesel engines and mapping of the operating mechanisms

Olander

Jacobson

2015

Wear

View full text Add to dashboard Cite

PostprintThis is the accepted version of a paper published in Wear. This paper has been peer-reviewed but does not include the final publisher proof-corrections or journal pagination.Citation for the original published paper (version of record):Olander, P., Jacobson, S. (2015) Scuffing resistance testing of piston ring materials for marine two-stroke diesel engines and mapping of the operating mechanisms. AbstractThe incentive is strong for optimising sliding materials to reduce the risk for scuffing. In this study, scuffing tests were performed aiming towards finding new piston ring materials for greener marine diesel engines and also towards understanding scuffing mechanisms better. The tested ring materials where grey iron, Stellite 6, plasma sprayed cermet and high velocity oxy fuel (HVOF) cermet (both cermets with the same compounds: Cr-carbide, Ni, Cr, Mo). The Stellite 6 and HVOF cermet performed somewhat better than the other two materials. Microscopic and spectroscopic studies of failed sample surfaces revealed several characteristic features. It was clear that different mechanisms are active simultaneously, at different parts of the samples. Based on these results, we propose a hypothesis for a scuffing process involving several stages with distinctive mechanisms. Further studies are needed to strengthen this hypothesis and to relate these findings to actual deterioration mechanisms in the engine.

show abstract

Simultaneous Synchrotron X-ray Diffraction, Near-Infrared, and Visible In Situ Observation of Scuffing Process of Steel in Sliding Contact

et al. 2016

View full text Add to dashboard Cite

Scuffing behavior of gray iron and 1080 steel in reciprocating and rotational sliding

Cited by 31 publications

References 11 publications

Testing scuffing resistance of materials for marine 2-stroke engines – Difficulties with lab scale testing of a complex phenomenon

Testing scuffing resistance of materials for marine 2-stroke engines – Difficulties with lab scale testing of a complex phenomenon

Scuffing resistance testing of piston ring materials for marine two-stroke diesel engines and mapping of the operating mechanisms

Simultaneous Synchrotron X-ray Diffraction, Near-Infrared, and Visible In Situ Observation of Scuffing Process of Steel in Sliding Contact

Contact Info

Product

Resources

About