Which metals are more susceptible to high frequency heating, iron, copper, tungsten, aluminum

In the case of high-frequency heating, it should be that the greater the resistance, the faster the temperature rises.

Therefore, the order of the above four metals should be: copper, aluminum, tungsten, and iron.

When the metal object is placed in the ** circle, the magnetic beam will penetrate the entire heated object, and a large eddy current will be generated in the opposite direction of the heating current inside the heated object. Due to the electrical resistance in the heated object, a lot of Joule heating is generated, which causes the temperature of the object itself to rise rapidly.

Under the same conditions (current, magnetic field, etc.) in high-frequency heating, the magnitude of the resistance determines the magnitude of Joule heating. Of course, there is also a question of how fast or slow the temperature rises than the heat.

Which metals are more susceptible to high frequency heating, iron, copper, tungsten, aluminum

Copper has the best thermal conductivity. The thermal conductivity of a metal is expressed in terms of thermal conductivity (thermal conductivity).

The thermal conductivity coefficient is defined as how much W of energy can be transmitted per unit length and per k, and is measured in W mk. where "w" refers to the unit of thermal power, "m" represents the unit of length in meters, and "k" is the unit of absolute temperature.

The higher the value, the better the thermal conductivity. The thermal conductivity of the following metals:

Copper 401 W mk

Aluminum 237 W mk

Iron 80 W mk

The easiest way to test is to burn one end of it with fire and touch the other end with your hand to see how hot it is.

The thermite method is a method that uses the reducibility of aluminum to obtain high melting point metal elements.

It can be simply thought of as the reaction of aluminum with certain metal oxides (such as Fe2O3, Fe3O4, Cr2O3, V2O5, etc.) under high thermal conditions. The thermite reaction is commonly used to smelt metals with high melting points, and it is an exothermic reaction.

Among them, magnesium strips are the ignition agent and potassium chlorate is the accelerant.

Thermal Reduction of Metals is the process of using a more reactive metal to reduce the compound of another weakly active metal to prepare a bonded Hezhou metal or its alloy. The chemical masking of the reduced metal can be oxides, sulfides, chlorides, fluorides or molten salts of metals, or they can be enrichments or concentrates of these compounds.

Metals that are more susceptible to high-frequency heating, i.e., the thermal conductivity of metals.

From strongest to weakest, they are:

Copper, aluminum, iron, tungsten.

Of the four metals, only iron has the best magnetic conductivity, so the heel of iron is suitable for high-frequency heating.

Tungsten can still maintain stability when heated and does not react with oxygen much, while other metals oxidize immediately when heated in oxygen and cannot be heated many times.

Tungsten light bulbs are the best example of this.