Custom Metal hot forging from China tells you that flame heating uses fuel (coal, coke, heavy oil, diesel, and gas) to burn in a flame-heating furnace to produce high-temperature gas (flame) containing a lot of heat energy. Custom Metal hot forging from China tells you that it transfers heat energy to the surface of the blank through convection and radiation, and then conducts heat from the surface to the center to heat the metal blank.

Custom Metal hot forging from China tells you that when the heating temperature is lower than 600-700°C, the blank is heated mainly by convective heat transfer. The so-called convective heat transfer means that the flame continuously flows around the blank, and the heat energy is transferred to the metal blank by means of the heat exchange between the high-temperature gas and the surface of the blank.

Custom Metal hot forging from China tells you that when the heating temperature exceeds 700-800°C, the heating of the blank is mainly based on radiation heat transfer. The so-called radiation heat transfer is to convert heat energy into radiation energy through high-temperature gas and furnace, and the radiation energy propagated in the form of an electric microwave is absorbed by the metal blank, and then the radiation energy is converted into heat energy to heat the blank. Generally, when ordinary forging furnaces are heated at high temperatures, radiation heat transfer accounts for more than 90%, and convective heat transfer only accounts for 8% to 10%.

Custom Metal hot forging from China tells you that the advantages of the flame heating method are that the source of fuel is convenient, the furnace is simple to build, the heating cost is low, and the adaptability to the blank is wide. However, the working conditions are poor, the heating speed is slow, the efficiency is low, and the heating quality is difficult to control. This heating method is widely used in the heating of various blanks.