2005 Cilt 19 Sayı 1

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In this study, the wear at two different operating speeds and the energy equivalent of the quantity of material lost due to wear of the blades of a domestic made rotary cultivator operating on a clay soil were determined, and thus the importance of wear was emphasized. The wear in a blade operating at low (2.3 km/h) operating speed in terms of losses weight and surface area were found as 8.8 ± 0.513 g/ha and 1.5 ± 0.083 cm2 /ha, respectively, on average; whereas these values were determined as 1.8 ± 0.177 g/ha and 0.43 ± 0.025 cm2 /ha, respectively, at high (5.5 km/h) operating speed. It was also determined that the rotary blades will complete its tillage-life in the case of cultivation with the mentioned blades under the clay soil condition, after cultivating an area of nearly 300-400 da at low speed and approximately 1400-1500 da at high speed. According to the total rotary cultivator in Turkey, it was found that the annual wear of the blades in the machine was 5730 t, the energy lost was 497x106 MJ and the cereal equivalent of the energy lost was 33100 t, at the operating speed of 2.3 km/h. However, it was determined that the wear of blades, energy loss and the cereal equivalent of the energy loss were reduced nearly five times at the operating speed of 5.5 km/h. 1