Sliding friction and wear properties of friction linings with friction-promoting grease applied

Abstract

The rheological properties of a commercial friction-promoting grease (FPG) were investigated using a cone and plane rheometer. Two friction tests were conducted at a low sliding rate (1 mm/s) using a wire rope (designed for mining use) and a commercial friction lining material. One involved dry-friction and the other greased conditions. The corresponding coefficient of friction (COF) in each case was determined and used to evaluate the effect of application of the FPG on the lifting performance of a hoist under normal conditions. In addition, experiments involving high-speed sliding friction between the wire rope and the friction material were also performed (with and without the FPG). Different sliding speeds and applied loads were used. The aim was to obtain the tribological behavior of the friction material in conditions that simulate a severe working environment for the hoist. The experimental results were analyzed and combined with the rheological properties of the FPG. The FPG can substantially protect the friction lining from wear and simultaneously provide an adequate COF (about 0.356) between the friction pair under normal working conditions. When the working conditions are severe, an increase in sliding speed causes a decrease in the COF. However, a larger load does not necessarily result in a smaller COF. Increasing the sliding speed or the load both aggravate the wear of the friction lining.

Keywords

Friction-promoting grease friction lining coefficient of friction wear wire rope

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References

Yang

Zhang

. Test study on influence of twist direction of wire rope on friction performance of mine hoist liner. China Min Process Eq 2013; 41(3): 58–60.

Peng YX. Thermo-stress coupling behavior of lining during sliding in friction hoist. PhD Thesis, China University of Mining and Technology, China, 2009.

Xu L. Tribological behavior and modification of friction lining for mine hoist under severe conditions. PhD Thesis, China University of Mining and Technology, China, 2009.

Zhang

. Research on mechanical properties and wear characteristics of frictional liner on winder. China Coal Mine Mach 2012; 33(10): 51–53.

. Research on the performance of the friction coefficient of the lining in a multi-rope winder. China Min Sci Technol 1990; 11(1): 95–99.

. Friction coefficients between the steel rope and polymer lining in frictional hoisting. Wear 1992; 152(1): 21–29.

Xia

. Research on the measuring condition for friction coefficient of lining in a friction hoist. China Coal Sci Technol 1992; 6: 43–48.

Zhang

Chu

. Research and development of GM-3 new type lining material. China Nonferr Mines 2002; 31(2): 35–39.

Peng

Zhu

Chen

. Effect of tension on friction coefficient between lining and wire rope with low speed sliding. J China Univ Min Technol 2007; 17(3): 409–413.

10.

Zhu

Chen

. Influence of wire rope’s lay direction on the tribological properties of friction linings. J China Univ Min Technol 2008; 37(5): 690–693.

11.

Peng

Zhu

Chen

. Dynamic thermophysical properties of friction lining and their effect on transient temperature field. J Cent South Univ 2009; 40(2): 436–440.

12.

Peng

Zhu

Chen

. Theoretical analysis of thermoviscoelastic contact between friction lining and wire rope in mine friction hoists. Int J Min Sci Technol 2009; 19(4): 518–521.

13.

Peng YX, Zhu ZC, Chen GA, et al. Thermoviscoelastic constitutive model of friction lining in mining hoist. In: 2009 international joint conference on computational sciences and optimization, Sanya, China, 24–26 April 2009, pp.283–285. Los Alamitos, CA: IEEE Computer Society Conference Publishing Services.

14.

Peng

Zhu

Tong

. Thermo-stress coupling field of friction lining during high-speed slide of wire rope in a mine friction-drive hoist. Proc IMechE, Part C: J Mechanical Engineering Science 2012; 226(9): 2154–2167.

15.

Zhu

Chen

. Effect of different whiskers on the physical and tribological properties of non-metallic friction materials. Mater Design 2011; 32: 54–61.

16.

Zhu

Chen

. Optimization on tribological properties of aramid fibre and CaSO4 whisker reinforced non-metallic friction material with analytic hierarchy process and preference ranking organization method for enrichment evaluations. Mater Design 2011; 31: 551–555.

17.

Zhu

Chen

. Analysis on tribological properties of potentially new friction material with response surface method. J Wuhan Univ Technol Mater Sci Ed 2011; 26(3): 499–503.

18.

Zhu

Chen

. Effect of load and sliding velocity on tribological behaviors of aramid fiber reinforced PA 1010 composites. Ind Lubr Tribol 2010; 62(1): 46–51.

19.

Shen

Zhang

Duan

. Fretting wear behaviors of steel wires under friction-increasing grease conditions. Tribol Int 2011; 44(11): 1511–1517.

20.

DIN 51810-1: 2007. Testing of lubricants – determining the apparent viscosity of lubricating greases using rotational viscosimeter – Part 1: System of cone/plate.

21.

Chinese MT/T248: 1991. Measurement method for coefficient of efficient of mining hoist’s friction lining.

22.

Williams

. Engineering tribology, New York: Cambridge University Press, 2005, pp. 137, 157–137, 157.