Detail publikace

Magnetic Properties and Structure of Non-Oriented Electrical Steel Sheets after Different Shape Processing

Originální název

Magnetic Properties and Structure of Non-Oriented Electrical Steel Sheets after Different Shape Processing

Anglický název

Magnetic Properties and Structure of Non-Oriented Electrical Steel Sheets after Different Shape Processing

Jazyk

en

Originální abstrakt

Non-oriented electrical steel sheets are the most often used materials in electrical rotary machines. Raw sheets must be formatted by various methods, e.g., punching, laser, spark or water stream cutting. Basic parameters of magnetic, electrical, and mechanical properties of the sheets are usually obtained from the producer, but namely magnetic properties are changed in dependence on additional machining processes. The aim of this study is to describe changes in magnetic properties after punching, laser or spark cutting of the original sheets M470-50A. The basic information of structure was obtained by optical microscopy (OM) and scanning electron microscopy (SEM). For the magnetic measurements toroidal samples were prepared by the mentioned technologies. The magnetic parameters were yielded from the measuring of magnetic hysteresis loops in dependence on saturation fields and frequencies. Simultaneously structures of cut edges were analyzed by OM and SEM. The results are discussed from the point of view of applied cutting methods with the aim to obtain the best magnetic parameters and consequently a higher efficiency of the final product. After laser cutting, important decrease in remanence and increase in total losses were observed in comparison with the punched samples.

Anglický abstrakt

Non-oriented electrical steel sheets are the most often used materials in electrical rotary machines. Raw sheets must be formatted by various methods, e.g., punching, laser, spark or water stream cutting. Basic parameters of magnetic, electrical, and mechanical properties of the sheets are usually obtained from the producer, but namely magnetic properties are changed in dependence on additional machining processes. The aim of this study is to describe changes in magnetic properties after punching, laser or spark cutting of the original sheets M470-50A. The basic information of structure was obtained by optical microscopy (OM) and scanning electron microscopy (SEM). For the magnetic measurements toroidal samples were prepared by the mentioned technologies. The magnetic parameters were yielded from the measuring of magnetic hysteresis loops in dependence on saturation fields and frequencies. Simultaneously structures of cut edges were analyzed by OM and SEM. The results are discussed from the point of view of applied cutting methods with the aim to obtain the best magnetic parameters and consequently a higher efficiency of the final product. After laser cutting, important decrease in remanence and increase in total losses were observed in comparison with the punched samples.

BibTex


@article{BUT129440,
  author="Tomáš {Bulín} and Čestmír {Ondrůšek} and Miroslav {Hapla} and Oldřich {Schneeweiss} and Eva {Švábenská}",
  title="Magnetic Properties and Structure of Non-Oriented Electrical Steel Sheets after Different Shape Processing",
  annote="Non-oriented electrical steel sheets are the most often used materials in electrical rotary machines. Raw sheets must be formatted by various methods, e.g., punching, laser, spark or water stream cutting. Basic parameters of magnetic, electrical, and mechanical properties of the sheets are usually obtained from the producer, but namely magnetic properties are changed in dependence on additional machining processes. The aim of this study is to describe changes in magnetic properties after punching, laser or spark cutting of the original sheets M470-50A. The basic information of structure was obtained by optical microscopy (OM) and scanning electron microscopy (SEM). For the magnetic measurements toroidal samples were prepared by the mentioned technologies. The magnetic parameters were yielded from the measuring of magnetic hysteresis loops in dependence on saturation fields and frequencies. Simultaneously structures of cut edges were analyzed by OM and SEM. The results are discussed from the point of view of applied cutting methods with the aim to obtain the best magnetic parameters and consequently a higher efficiency of the final product. After laser cutting, important decrease in remanence and increase in total losses were observed in comparison with the punched samples.",
  address="Acta Physica Polonica A",
  chapter="129440",
  doi="10.12693/APhysPolA.131.819",
  howpublished="online",
  institution="Acta Physica Polonica A",
  number="4",
  volume="131",
  year="2017",
  month="april",
  pages="819--821",
  publisher="Acta Physica Polonica A",
  type="journal article"
}