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The influence of ambient temperature on the magnetic properties of non-oriented silicon steel

  • Time of issue:2018-09-28 18:59

(Summary description)The influence of different environmental temperatures on the electromagnetic properties of non-oriented silicon steel was studied. The focus is on the changes in the loss, magnetic induction, and permeability of 0.35mm non-oriented silicon steel with an ambient temperature in the range of 30-120°C and a silicon content in the range of 2.0%-3.0%.

The influence of ambient temperature on the magnetic properties of non-oriented silicon steel

(Summary description)The influence of different environmental temperatures on the electromagnetic properties of non-oriented silicon steel was studied. The focus is on the changes in the loss, magnetic induction, and permeability of 0.35mm non-oriented silicon steel with an ambient temperature in the range of 30-120°C and a silicon content in the range of 2.0%-3.0%.

  • Categories:Industry News
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  • Origin:Electrical steel pilot
  • Time of issue:2018-09-28 18:59
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  The influence of different environmental temperatures on the electromagnetic properties of non-oriented silicon steel was studied. The focus is on the changes in the loss, magnetic induction, and permeability of 0.35 mm non-oriented silicon steel with an ambient temperature in the range of 30 to 120 ℃ and a silicon content in the range of 2.0% to 3.0%. The results show that when the temperature increases from 30 ℃ to 120 ℃, the iron loss P1.5/50 decrease rate is about 4.03%, the magnetic induction B50 decrease rate is about 6.83%, and the maximum permeability μm decreases about 9.36%.

  Non-oriented silicon steel with low iron loss and high magnetic induction performance can effectively improve motor performance and reduce motor loss. In recent years, with the global emphasis on energy conservation and environmental protection, and the promotion of frequency conversion technology in motor miniaturization, high efficiency, and emerging industries, non-oriented silicon steel has developed rapidly. Silicon steel manufacturers use strict production control methods from smelting, rolling, and heat treatment to obtain silicon steel materials with excellent electromagnetic properties, and use professional magnetic measuring equipment to conduct magnetic induction and iron loss tests to provide motor manufacturers as Basis of motor design. However, a large number of research results show that whether it is the electromagnetic field distribution in the magnetic material or the loss distribution, the accuracy and validity of the results ultimately depend on the electromagnetic performance of the material in its actual working state. At present, the electromagnetic performance data provided by silicon steel manufacturers, such as the iron loss and magnetization performance curves of non-oriented silicon steel sheets, are usually measured under the conditions specified by laboratory standards, which cannot truly reflect the true state of the motor operation, in order to be more accurate To study the influence of silicon steel materials on motor performance, it is necessary to study the magnetic properties of silicon steel materials at different temperatures. At different temperatures in the range of 30 to 120 ℃, the study on the change law of the magnetic properties of non-oriented silicon steel is carried out.

 
  Get the following conclusions:
  

  (1) At 30~120℃, the loss of 0.35mm non-oriented silicon steel with a silicon content of 2.0%~3.0% decreases with the increase of temperature. Under the test frequency of 50Hz, the iron loss P1.5/50 decreases by about 4.03% ;

  (2) At 30~120℃, the magnetic induction of 0.35mm non-oriented silicon steel with silicon content of 2.0%~3.0% decreases with the increase of temperature. B50 decreased by about 6.83%;

  (3) At 30~120℃, the permeability of 0.35mm non-oriented silicon steel with silicon content of 2.0%~3.0% decreases with the increase of temperature, mainly in the magnetic field range of 100A/m, the maximum permeability is μm Down by about 9.36%;

  (4) Under high frequency of 0.35mm non-oriented silicon steel with silicon content of 2.0%~3.0% at 30~120℃, the iron loss will increase significantly, the influence of temperature on the iron loss is relatively obvious, and the magnetic permeability will decrease significantly. , The influence of temperature is relatively insignificant.

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