Role of Hardness on Abrasive Wear Modes in a Three Body Wear
Hemaraju1, Ranganatha S2, Shashidhara K N3

1Prof Hemaraju, Department of Mechanical Engineering, Bangalore Institute of Technology, Bangalore, (Karnataka). India.
2Dr. Ranganatha S, Professor, Department of Mechanical Engineering, University Visvesvaraya College of Engineering, Bengaluru, (Karnataka). India.
3Dr. Shashidhara K.N., Professor and Head, Department of Mechanical Engineering, Cambridge Institute of Technology, Bangalore, (Karnataka). India.

Manuscript received on 20 January 2016 | Revised Manuscript received on 30 January 2016 | Manuscript published on 30 January 2016 | PP: 40-47 | Volume-4 Issue-6, January 2016 | Retrieval Number: F1525014616©BEIESP
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Abstract: In thermal power plants, fluid slurry conveying and other industrial applications where material is conveyed, the hard materials will be in-contact with parts of conveyors. The surfaces of piping and pumps surfaces come in contact with hard particles. The mill components like grinding ring, grinding balls and other components of the mill are exposed to different hard particles. In all the above the common feature is ‘two bodies’ which are in contact while transferring load and displacement from one object to other object. Apart from many are also exist, relative motions between the two objects. This type of loading and dynamic conditions gives rise to elastic, inelastic and surface damage of both the objects. This causes damage of machinery equipment which affects the efficiency of a machine and in extreme conditions leading to breakdown of machines. In the present investigations experiments have been conducted to understand basic wear mechanisms that will be prevailing when hardness of the material varies. For simulating the field conditions rubber wheel abrader test is used for conducting experiments. Mild steel (130.9 BHN heat resistant steel (155.6 BHN) High carbon high chromium steel (158.2 BHN) and cast iron (159.3 BHN) were used as target materials. Commercially available sand was used as abrader. Experiments were conducted with two normal loads 53.2 N and 102.4 N. The speed was maintained at 200 rpm. The time of test has 6 minutes, the flow rate was 100 grams/min. The wear loss was estimated and found that wear loss for mild steel and heat resistant steel are comparable which are 0.41 and 0.29 at a load of 53.2 N and 0.82 and 0.57 at a load of 102.4 N. The wear loss was estimated and found that wear loss for high carbon high chromium steel and cast iron of 0.08 and 0.04 at a load of 52.3 N and 0.16 and 0.06 at a load of 102.4 N which is again comparable.
Keywords: 130.9 BHN heat resistant steel (155.6 BHN) High carbon high chromium steel (158.2 BHN) and cast iron (159.3 BHN), 102.4 N,

Scope of the Article: Algorithm Engineering