SOME STUDIES ON WEAR CHARACTERISTICS OF ROTAVATOR BLADES
KrishiKosh
View Archive InfoField | Value | |
Title |
SOME STUDIES ON WEAR CHARACTERISTICS OF ROTAVATOR BLADES
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Creator |
Ramulu, Chelpuri
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Contributor |
Dave, A.K.
Srinivas, I. Victor, V.M. Bajpai, R.K. Saxena, R.R. |
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Subject |
ROTAVATOR BLADES
Farm Machinery, Power Engineering |
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Description |
Tillage is the most important unit and more energy consumption operation in agriculture. The most widely accepted method of tilling land is ploughing with plough and cultivators. These invert the upper soil layer, without proper mixing of soil, hence these needs additional operations of rotavator and harrow to improve soil tilth on the ploughed land. The tractor mounted rotavator holds promise for overcoming these problems. Rotavator saves 30-35 % of time and 20-25 % in the cost of operation as compared to tillage by cultivator. It gave higher quality of work (25-30 %) than as cultivator. Rotavator under dynamic loading, blades are subjected to fatigue and abrasive wear. Abrasive wear has been emerged as a serious problem in rotavator blades. It increases the down time and maintenance xi cost. The objective of this study was to increase the wear resistance and reduce the down time by strengthening the rotavator blades by surface modification. In this study coating of 3 material (Tungsten carbide, Stellite-21 and Chromium Carbide) have been done on different makes of L- type rotavator blades using electro spark coating, with 3 modes for each material. Out of this study, the coating material Tungsten carbide was found better in reference to wear loss compared to rest of the coated materials. The wear loss was minimum in T2 (Tungsten carbide 4th mode) treatment of blade 2 compared to other treatments on the basis of weight and volume. The hardness of the treatment C2 (Chromium carbide 4th mode) (58.33 HRA) of blade 2 was higher compared to the rest of the treatments in both blade 1 and blade 2. The study concluded that Tungsten carbide may be a material coating material for reducing wear loss in rotavator blade. However better hardness was achieved under chromium carbide coating. |
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Date |
2016-12-16T11:11:14Z
2016-12-16T11:11:14Z 2016 |
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Type |
Thesis
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Identifier |
90 p.
http://krishikosh.egranth.ac.in/handle/1/90500 |
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Language |
en
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Format |
application/pdf
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Publisher |
Indira Gandhi Krishi Vishwavidyalaya, Raipur
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