What is the concept of a multi-purpose furnace

The radiant tube is a tube extending in a straight line from the center in all directions. Refers to the non-central pipeline (or main pipe), which is used to transport the substance of the main pipe to the designated or non-designated address.

The problem of grasping the temperature of the radiant tube can be achieved by configuring a temperature measurement and temperature control system. For example: industrial oven temperature control, hot runner temperature control and so on.

Secondly, it is necessary to choose suitable and effective electric heating elements, such as radiant tubes, electric heating plates, electric heating coils, etc., as well as stainless steel radiant tubes, ceramic radiant tubes, quartz radiant tubes, and carbon fiber radiant tubes. Finally, a temperature control system should be installed according to the requirements of temperature control, including the temperature controller, ammeter, AC contactor, thermocouple and temperature control box required for radiant tube temperature control.

The multi-purpose furnace radiant tube is an electric heating element enclosed in a protective sleeve to be energized for heating. The sleeve indirectly radiates heat to the furnace lining and the workpiece to be processed. It is widely used in various heating furnaces in the heat treatment industry. The electrothermal alloy material used in the radiant tube of the multi-purpose furnace should have a high resistivity and a high electrothermal conversion rate. Because the radiant tube of the multi-purpose furnace is placed in the sleeve, the heat transfer process is different from that of general open-type electric heating elements, and its thermal shielding is large. During the heating process, the temperature of the element must be controlled to prevent the element from overheating. When the multi-purpose furnace radiant tube is closed and heated, the surface temperature of the electric heating element is higher than the furnace temperature by about 100 ° C-150 ° C. Therefore, when selecting materials, analyze the furnace temperature, the temperature and atmosphere in the furnace, and select the correct heating material:

(1) A sleeve-type radiant tube is made, the inner tube is a combustion tube, and the outer tube is a radiant tube. Intake and exhaust are performed at the same end of the radiant tube, and the other end is sealed. Burning tube. After the fuel is burned in the combustion tube, the flame flows back from the end of the combustion tube into the interlayer between the combustion tube and the radiation tube, returns to the fuel injection end, and is then discharged. This is to extend the combustion distance, complete the combustion, and allow the flame to conduct sufficient heat exchange with the inner and outer tubes.

(2) Install a heat exchanger between the jacket interlayers at the front of the radiant tube, and use the combustion products to preheat the air, which can be preheated to 600C.

(3) A part of the combustion products are sucked in through the nozzle, participate in the recirculation, make fuller use of heat, and make the temperature uniform along the length of the radiation tube.

(4) The radiant tube is horizontally supported between the two furnace walls, which is more convenient to install and replace, and saves materials.