Banca de DEFESA: AILSON CARDOSO JUNIOR

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : AILSON CARDOSO JUNIOR
DATE: 25/04/2024
TIME: 14:00
LOCAL: Auditório CEFET TIMÓTEO
TITLE:

An alternative heat treatment for recovering the magnetic properties of a non-oriented grain Fe-Si steel after cutting

KEY WORDS:

Electrical Steel. Non-Oriented Grain Electrical Steel. GNO. Magnetic Properties. Punching. Cutting tool.

PAGES: 100
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Metalurgia Física
SPECIALTY: Propriedades Físicas dos Metais e Ligas
SUMMARY:

With the increasing global demand for electrical energy, the optimization of electrical equipment and the use of more efficient steels are of paramount importance in seeking better energy utilization and consequent reduction in energy consumption. In this scenario, electrical steels are widely used materials in the industry, especially in the construction of motors and transformers, which are primarily responsible for the operation of electrical equipment, due to their good magnetic properties. Electrical steels can be divided into three groups: grain-oriented silicon steel (GO), non-grain-oriented silicon steel (NGO), and common low-carbon steel. In the present study, samples of non-grain-oriented silicon steel (NGO) with 3.3% silicon by weight in the composition were analyzed. However, it is worth noting that NGO electrical steels exhibit energy losses, albeit on a smaller scale, and their magnetic properties depend on the different conditions adopted for their processing. Magnetic losses, in turn, can limit the performance of electrical steels, therefore representing an important parameter for quality control, and if not controlled, they can increase energy demand and promote energy wastage. Thus, considering the influence of mechanical processing on the magnetic and structural properties of NGO electrical steels, this study investigates the effects of heat treatment on magnetic losses and their components - hysteresis loss, excess loss, and parasitic loss. To this end, the development of this project will involve the analysis of the microstructure of NGO electrical steel samples through the characterization of the steels in the as-delivered state by the supplier and after the test specimens have been subjected to heat treatment at 700, 800, and 900 degrees Celsius, using Optical Microscopy, Microhardness Tester, and Brockhaus equipment.

COMMITTEE MEMBERS:
Presidente - LEONEL MUNIZ MEIRELES
Interno - VALMIR DIAS LUIZ
Interno - JORGE LUIS COLETI
Interno - DANIEL LEANDRO ROCCO
Externo à Instituição - IGOR DE SOUZA LANA ANTONIAZZI