Utvärdering av nötningsmekanismer för verktyg till jordbearbetning : För ett hållbart jordbruk i framtiden

Sammanfattning: In the agricultural industry, cultivator tines are used for stubble cultivation and seedbed preparation. They are exposed to rapidly developing abrasive wear, which becomes a major economic problem. The occurring wear in the tines is heavily dependent on the characteristics of the soil which it passes through. In this master thesis the goal is to produce a method which, in a laboratory environment, can reproduce the circumstances which real cultivator tines are exposed to in the field. The method will enable analysis and evaluation of the initial wear mechanisms causing the wear. In order to simulate the tillage, a pendulum setup was constructed. With this, a series of repeated impact tests were performed into a soil sample. Throughout the tests, the “cultivator tine” samples were made of aluminium. This material choice would enable an accelerated wear rate, following its low hardness. All tests were performed in the same soil, with moisture content being the only varying parameter;~0% and 18% respectively. The samples which had passed through soil with higher moisture showed reduced wear compared to those which had passed through dry soil. The pendulum setup contributed to the tests being executed in a controlled and reliable manner. Hence, it is determined to be suitable for further use in any future project work related to the subject.