Five types of high temperature furnace
The high temperature furnace is also called the experimental electric furnace, which is a heating device used in the laboratory. High-temperature furnace is just a general term, in fact, there are many subdivisions in the continuous development process. Today, we mainly introduce the most common types of high-temperature furnaces produced by mainstream high-temperature furnace manufacturers.
As the name implies, the box-type high-temperature furnace has the same appearance as a box, which is in the traditional sense, but with more powerful functions and better insulation performance. The furnace chamber is generally square, and the size specifications can be customized. The door is opened in the front, and the opening side is pulled outwards. There is a door plug inside the door for better heat preservation. This is also the most commonly used high-temperature furnace, suitable for most laboratories.
It is suitable for the heating and sintering of small workpieces and small samples, and is used in many laboratories of universities and colleges. The working method is to put the quartz or corundum furnace tube into the furnace for heating, and place the workpiece in the heating zone and constant temperature zone.
Sealing flanges are used at both ends of the tube furnace, which can realize pre-vacuum, and can pass in various protective gases, oxidizing gases and reducing gases.
The atmosphere furnace is a high-temperature furnace that integrates the dual characteristics of a box furnace and a tube furnace. It is suitable for experiments and production with larger samples and atmosphere requirements. The appearance of the atmosphere furnace is similar to that of the high temperature furnace, and the air inlet and outlet are added on this basis. The furnace body is sealed and welded, and there is a high temperature resistant silicone sealing ring on the furnace door, which can play a good sealing role. Therefore, it can be pre-evacuated during use, and can also be passed into various atmospheres. The vacuum effect is slightly worse than that of the tube furnace, but it does not affect the use, generally it can reach 0.05MP.
Pit-type furnaces are actually similar to box-type furnaces and atmosphere furnaces from the appearance, and they are all box-shaped. But from the structural point of view, it is very similar to the crucible high temperature furnace. The hearth of the pit furnace is arranged vertically, and samples and workpieces can be taken and placed in the vertical direction. The furnace door is opened above the furnace, and the door is opened and closed vertically. It is very convenient that automation needs to be improved, such as cooperating with manipulators for automatic experiments. The hearth of a pit furnace is generally round, but there are also many customers who want a square hearth.
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