Dependence of Magnetization Near Saturation on Alloying Content in Ferromagnetic Steel

2017 IEEE International Magnetics Conference (INTERMAG)

2017

The temperature dependence of saturation magnetisation of commercial 0.1 to 3 wt. % silicon steels is first measured using an air-cored solenoid and then modelled using a linear formula in accordance with the spin-wave theory, over the range of 20-100°C and in 100 KA/m applied field. The samples measured were heated by applying a heavy ac current along their length, and the measurement of temperature was made using thermocouples. The paper discusses the effect of temperature variation on magnetisation in high field regime approaching saturation in several grades of electrical steel.

Section: Experimental Set-up and Measurementsmentioning

confidence: 99%

Modelling of temperature dependence of saturation magnetisa-tion of silicon-iron steels

2017 IEEE International Magnetics Conference (INTERMAG)

2017

“…A good deal of detail on the magnetising system used for measurements on Epstein size samples was previously reported [16]. Fig.…”

Section: Experimental Setup and Measurementsmentioning

confidence: 99%

“…In the study, to saturate the part of an Epstein specimen inside the exciting coil, a minimum applied magnetic field of 50kA/m is required everywhere in the plate [16]. This requirement is met with by winding N e = 3060 turns of coil on a 200 mm long former.…”

Section: Experimental Setup and Measurementsmentioning

confidence: 99%

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Development of an on-line system for precision dimensional measurements in electrical steels using approach to ferromagnetic saturation

2015 IEEE International Conference on Industrial Technology (ICIT)

2015

Self Cite

Abstract-A system based on a measurement technique magnetisation near saturation is presented that allows high precision measurement of dimensional parameters of iron alloys. Extensive measurements in electrical steel laminations show high accuracy in measurement of cross section area of the strips. The technique uses approach to saturation magnetisation which has previously been shown to be dependent on alloying content of the materials. This system is proposed for on-line measurement of cross sectional area and thickness of electrical steels, and other types of ferromagnetic strip metals.

“…The calculated applied magnetic field was produced by a comparably longer rectangular coil, and the results were then compared with those of measured values on actual samples using the computerised experimental set-up, previously described in [23,24]. Figure 1 shows the basic structure of an open magnetic circuit tester used for the measurements.…”

Section: Introductionmentioning

confidence: 99%

Determination of the demagnetisation of electrical steel strips

2017 IEEE 26th International Symposium on Industrial Electronics (ISIE)

2017

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Using basic principles and fundamental equations for calculating the average demagnetising field at the mid-plane of a completely saturated magnetic strip, demagnetising effect was estimated and confirmed by measurements made on various samples. Using the formula, the saturation magnetisation of a group of steel strips, measured using an open magnetic circuit tester, was corrected. The accuracy in determining saturation magnetisation using this method was investigated.