Tribological Performance of M50 Steel Tribo-Parts

Wang, Liqin; Peng, Bo; Li, Gu; Wang, Jun

doi:10.1080/10402004.2011.648825

Cited by 23 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There will be a contact potential difference between two contacted different metals due the disparity of their work functions, resulting in charge polarity differences on their surfaces. Although the bearing is made of the same metal, the existing white layer [31] or nascent surface have a different work function compared with their mother surface [17]. Meanwhile, the differences of stain and surface roughness lead to a work function difference with the surrounding material [32,33], which results in a local charge distribution difference.…”

Section: Contact Potential Differencementioning

confidence: 99%

A specially-designed electrostatic sensor for the condition monitoring of rolling bearings

Li¹,

Hu²,

Tang³

2020

Meas. Sci. Technol.

View full text Add to dashboard Cite

The electrostatic method is a rapidly growing research field in the monitoring of rotating equipment. This article reports how a specially-designed integrated electrostatic sensor was utilized to monitor the working conditions of rolling bearings. We firstly analyzed the principle and mathematic modeling of inner current noise generated by cable vibration and deformation. To ensure the electrostatic monitoring avoided being affected by cable vibration and deformation, we designed a ring-shaped printed circuit board to integrate the electrostatic electrode and condition unit together, which can be mounted tightly beside the rolling bearings; in this way, the cable connecting the electrode with the condition unit is removed and the distance between the electrode and rollers is shortened. Experiments using this integrated sensor board were conducted to obtain the electrostatic signals of working bearings. Time features were analyzed in detail to show the differences of four working bearings across the whole process. Experimental results show that the proposed integrated electrostatic sensor has a good performance in the electrostatic monitoring of rolling bearings.

show abstract

Section: Contact Potential Differencementioning

confidence: 99%

A specially-designed electrostatic sensor for the condition monitoring of rolling bearings

Li¹,

Hu²,

Tang³

2020

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…M50 steel material has excellent thermal stability and anti-fatigue properties, and it is one of the main raw materials for manufacturing aviation spindle bearings [ 1 , 2 , 3 ]. Currently, the operation of aircraft bearings is developing more and more in the direction of heavy load and high speed; therefore, improving the tribological performance of M50 is particularly important, which is one of the research hotspots in the world [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Friction and Wear Characteristics of Microporous Interface Filled with Mixed Lubricants of M50 Steel at Different Loads

Liu¹,

Lü²,

Dong³

et al. 2020

Materials

View full text Add to dashboard Cite

Improving the tribological performance of M50 steel under the conditions of wide load range is of great significance. In this study, the interfacial structure of surface micropores filled with Sn–Ag–Cu or Sn–Ag–Cu/whisker carbon nanotubes (whiskerCNT) of M50 material was prepared by laser additive manufacturing and high-temperature infiltration. From 2 to 22 N, the lubrication characteristics of Sn–Ag–Cu and whiskerCNT in surface micropores of M50 was investigated. Results indicate that Sn–Ag–Cu can precipitate to the worn surface and form a lubricating layer, which has a good lubricating effect. Moreover, the flow behavior of Sn–Ag–Cu on a worn surface can play the role of crack healing. At higher load, the strength of the lubricating film is enhanced by whiskerCNT, which renders the lubricating film not vulnerable to premature rupture.

show abstract

“…Solid lubricants have excellent lubricating properties, which provide an opportunity for the development of solid lubricants and the research of metal matrix self-lubricating composites. Wang et al (2012) investigated the tribological performance of M50 steel under extreme conditions for ascertaining the ultimate capacity and failure regularity of M50. To improve the tribological properties of M50, Liu et al (2017) prepared M50graphene self-lubricating composites, studied its frictionreducing and anti-wear behaviors from 150°C to 550°C and found a complete lubricating film on the worn surface.…”

Section: Introductionmentioning

confidence: 99%

Failure mechanisms of lubricating film on M50-Ag composites

Deng

Shi

et al. 2019

ILT

View full text Add to dashboard Cite

Purpose This paper aims to explore the damage mechanism of a lubricating film on the worn surface of solid self-lubricating composites under different loads. Design/methodology/approach By comparing the actual stress with the strength, it is possible to determine the approximate wear state of the lubricating film. To prove the validity of the mathematical model that can predict the initiation of micro cracks or even the failure of the lubricating film, M50-5 Wt.% Ag self-lubricating composites (MA) was prepared. Tribological tests of the composites against Si3N4 ceramic balls were conducted at room temperature from 2 to 8 N. The electron probe microanalysis images of the lubricating film verify the wear state of the lubricating film. Findings The study found that the back edge of the contact area is the most vulnerable to destruction. The tensile stress and the equivalent shear stress have a positive correlation with load and friction coefficient. When the load is 4 N, an intact lubricating film covers the worn surface because the tensile stress and the equivalent shear stress are below the tensile strength and the shear strength, respectively; under other working conditions, the lubricating film is destroyed. Originality/value This paper has certain theoretical guidance for the study of tribological properties of solid self-lubricating composites. Moreover, this mathematical model is appropriate to be applied for the other composites.

show abstract

Tribological Performance of M50 Steel Tribo-Parts

Cited by 23 publications

References 22 publications

A specially-designed electrostatic sensor for the condition monitoring of rolling bearings

A specially-designed electrostatic sensor for the condition monitoring of rolling bearings

Friction and Wear Characteristics of Microporous Interface Filled with Mixed Lubricants of M50 Steel at Different Loads

Failure mechanisms of lubricating film on M50-Ag composites

Contact Info

Product

Resources

About