Low angle scouring erosion behaviour of elastomeric materials

Abstract Elastomers are a particularly important class of material, finding increasing utilization in applications such as piping and tubular components; pumps; valves and cyclones; where considerable resistance to low angle scouring erosion is critical. Assessment of elastomers at impingement angles >10° has been readily available using various slurry jet devices, however, there is a clear need for a suitable method for evaluating these materials under conditions of high velocity, low angle ( Based on this requirement, a new specimen holder was developed for the Coriolis slurry erosion tester. This rig has previously been shown to provide a convenient and repeatable method for evaluating the scouring erosion resistance of a variety of hard materials [1]; however, until recently the capability to assess elastomeric materials was hindered by the distortion of specimens when the holding force was applied. The new holder alleviates this problem and ensures improved control of the slurry flow over the specimen surface thus producing consistent and reproducible erosion scars, which can be used for determining the expected wear of elastomers under conditions of low angle erosion. The current work examines the scouring erosion resistance and mechanisms of material removal for selected elastomers and compares data with that of various white irons, steels, cermets and overlays. The influence of erodent type on the resulting wear mechanisms has also been examined. Results have enabled correlations to be made between scouring erosion attack resistance, hardness and material type.

[1]  H. M Hawthorne,et al.  Some Coriolis slurry erosion test developments , 2002 .

[2]  A. J. Hill,et al.  Wear-resistant metallic and elastomeric materials in the mining and mineral processing industries — an overview , 2001 .

[3]  X. Jia,et al.  Two-body free-abrasive wear of polyethylene, nylon1010, expoxy and polyurethane coatings , 2007 .

[4]  H. Clark,et al.  Modelling slurry particle dynamics in the Coriolis erosion tester , 1999 .

[5]  I. Hutchings,et al.  Resistance of cast polyurethane elastomers to solid particle erosion , 1990 .

[6]  C. I. Walker,et al.  Slurry pump side-liner wear: comparison of some laboratory and field results , 2001 .

[7]  G. Addie,et al.  Experimental study on erosive wear of some metallic materials using Coriolis wear testing approach , 2005 .

[8]  I. Finnie.  Erosion of surfaces by solid particles , 1960 .

[9]  R. Llewellyn,et al.  Erosion-corrosion assessment of materials for use in the resources industry , 2009 .

[10]  Krishnan V. Pagalthivarthi,et al.  Determination of wear coefficients for erosive wear prediction through Coriolis wear testing , 2005 .

[11]  H. Clark,et al.  Assessment of the erosion resistance of steels used for slurry handling and transport in mineral processing applications , 2001 .

[12]  Y. Iwai,et al.  Slurry wear properties of pump lining materials , 1997 .

[13]  H. M Hawthorne,et al.  A new Coriolis slurry erosion tester design for improved slurry dynamics , 2003 .

[14]  Yongsong Xie,et al.  On particle interactions with target materials of different mechanical properties in a long specimen Coriolis slurry erosion tester , 2005 .

[15]  R. Llewellyn,et al.  Scouring erosion resistance of metallic materials used in slurry pump service , 2004 .

[16]  H. Clark,et al.  Wear rates and specific energies of some ceramic, cermet and metallic coatings determined in the Coriolis erosion tester , 1999 .