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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Optimering av kornstorlek hos elektroplåt för elbilstillämpningar

Landström, Clara, Göransson, Sofia, Segervall, Gabriella, Wildt, Karl, Beyermann, Simon January 2020 (has links)
As a part of the independent project in Material Engineering a bachelor thesis was done for thecompany Cogent Surahammars Bruk AB. The purpose of this project is to study productionand lab annealed samples of electric steel to find how magnetic and mechanical properties correlatesto grain size. To achieve this three samples with different compositions were annealedat temperatures within the range of 800 - 950 C. The grains were then analysed with lightmicroscopy, mechanical properties were studied with tensile testing, and lastly magnetic propertiesusing a “single sheet tester”. It was found that titanium has an impact on both mechanicaland magnetic properties. With the uncertainties of the project in mind the most probable causebeing hinderance of grain growth. The yield strength and tensile strength for all samples andtemperatures are within the requirements of the company. The three samples meet the criteriaof permeability and power losses differently. One composition seems to meet the requirements,and the other two exhibit inferior results.

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