The heating temperature of the resistance wire depends on what material you use, such as high temperature wire and medium temperature wire. The use temperature of high temperature wire is below 1200 degrees, the use temperature of medium temperature wire is below 950 degrees.
The greater the current in the heating wire, the higher the temperature of the heating wire. The color changes from dark red to bright red as the temperature increases, and then from close to yellow to white, reaching a dazzling blue-white color. Based on this fact, the temperature of the object can be judged from the color of the object's light emission.
The heating wire has a higher temperature (1100°C) and is yellow-red. The heating wire has a higher temperature (1300°C) and is yellow-white. Achieve dazzling blue and white (1500℃> above.
The heating wire reaches the red hot state, which is related to the organization of the heating wire. First remove the hair dryer and cut off a section of the heating wire. Use an 8V 1A transformer, and the resistance of the heating wire or electric blanket should not be less than 8 ohms, otherwise the transformer will burn easily.
With a 12V 0.5A transformer, the resistance value of the heating wire cannot be less than 24 ohms, otherwise the transformer will easily burn out. If the heating wire reaches the red hot state, the redder the better, the 8V 1A transformer should be used, and its power is larger than the 12V 0.5A transformer. In this way, we can better test the advantages and disadvantages of the heating wire.