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Anonymous users2024-02-06The heating speed does not affect because the induction cooker applies the principle of electromagnetic induction to heat the food. The surface of the induction cooker is a heat-resistant ceramic plate, and the alternating current generates a magnetic field through the coil under the ceramic plate, and when the magnetic field lines in the magnetic field pass through the bottom of the iron pot and stainless steel pot, eddy currents are generated, so that the bottom of the pot is quickly heated to achieve the purpose of heating food. It is not a traditional heat transfer heating, so it has nothing to do with the thickness of the pot.
But because there is an electromagnetic field that creates eddy currents, a pot that is too thin will make a squeaky noise, while a thicker pot will not.
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Anonymous users2024-02-05Electromagnetic heating irons can be roughly divided into two types:
The first type: pipeline electromagnetic heater transformation is to heat the pipe, the thickness of the iron is usually more than 3-5mm, the thicker the thickness of the iron, the slower the heat transfer must be, of course, it can not be too thin, such as the pipe wall used to heat water is too thin and easy to penetrate the pipe, so it can be as thick as possible with this 3-5mm, not lower than this range value is better.
The second type: the transformation of the plate electromagnetic heater is that the heating is flat, the thickness of the iron is not the thickness of the first kind, if the thickness of the iron can be 3-5mm only when heated at the bottom of the container, but if it is only an iron plate, we have to think about the principle that the iron plate will be deformed when heated, so the thickness should be determined according to the scale, at least more than 1cm, and the larger the scale, the greater the thickness demand.
The electromagnetic heater can heat the iron, and under what circumstances the thermal efficiency of the electromagnetic heating iron is the highest, which is also learned from Shenzhen Biyuanda Technology Company.
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Anonymous users2024-02-04Neodymium magnets, which are often referred to as NdFeB strong magnets (rare earth magnets), today the question is what is the temperature at which the neodymium magnet loses its magnetism? And what is the temperature at which magnetism disappears completely?
The temperature difference between magnets of different materials to retain magnetism is very large, and standard n-series neodymium magnets can withstand a temperature of 80 and will begin to decrease at 80. If the magnet returns to room temperature soon, its full magnetism will be restored. However, if the temperature is kept above 80 degrees for a long time, the magnetism may be permanently lost.
The ultimate working temperature of NdFeB products of N series grades is 80 180, and the temperature of permanent loss of magnetism is 310, and this 310 is the Curie temperature of N35 NdFeB magnets.
In normal temperatures, there are several cases in which the magnetic force may also disappear;
1. Subjected to violent collisions.
2. Put it in a strong magnetic field.
Demagnetization is a gradual process, while Curie temperature refers to the complete loss of magnetism when that temperature is reached.
The above is an introduction to the temperature of neodymium magnets losing magnetism, when the magnet reaches or is close to the maximum operating temperature, demagnetization will occur.
PS: The shape of a neodymium magnet will also directly affect how much heat it can withstand, generally speaking, thin magnets are more likely to heat than thick and large magnets.
Magnets lose their magnetism at high temperatures.
It's just that the temperature resistance of different materials is different, and the Curie temperature is also different.
Ferrite temperature resistance of about 80 degrees, Curie temperature 320-465 (generally magnets are permanently lost when they exceed Curie temperature).
NdFeB temperature resistance 81-100-120-150-180-200 degrees Curie temperature 320
The Curie temperature of ferrite is 465, that of NdFeB is 310, that of Alnico is 800, and that of samarium cobalt is 700-800
Iron-chromium-cobalt Curie temperature 680
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