Characterize material and bulk hardening for rotavator blade to resist abrasive wear
2009
Saxena, A.C.
During operation, the blades of rotavator are subjected to fatigue and abrasive wear. As a result theses blades require frequent replacement, which add to equipment running cost as well as down time. The purpose of this study is to undertake metallurgical up-gradation on rotavator blades to enhance its service life. Four grades of spring steels (two Boron based and two Boron free) were selected for the study. The quenching and tempering on all grades and additional austempering on two grades of Boron steels were imparted. All six treatments were compared for abrasive wear with two popular brands of rotavator blades.The wear analysis of six treatments was carried our in three stages, firstly in laboratory scale by using DUCOM make dry sand abrasion test ring(ASTM G 65), secondly in a specially deigned rotary soil bin and finally in the field trial. The study revealed an identical wear ranking order of treatments in all three stages. The 50B50 (Boron steel) quenched and tempered steel ranked top as far as mass wear is concerned. But the higher cost of boron steels in Indian market put this to second place and the SAE-6150 has been found to be the best suitable steel considering benefit cost ratio.
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Эту запись предоставил Indian Council of Agricultural Research