Japanese Patent Hei 3-146615 is that when the iron core releases heat, a heat absorbing body is placed in a furnace, and the ultra-microcrystal iron core is brought into contact with the iron core to prevent the iron core from over-heating. The use of this method because the heat absorption body to occupy a certain space, and with the increase in the number of iron cores and increase, on the one hand, affect the iron core of the furnace, on the other hand, will slow down the heating and cooling
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2024-12-12
