The muffle furnace is a necessary and commonly used electric heating equipment in the laboratories and heat treatment workshops of general enterprises, colleges and universities. Now most of the box-type high temperature muffle furnaces in the laboratory are refractory brick muffle furnaces from a few years ago or even more than ten years ago. Because the refractory bricks are used as the insulation layer, the insulation effect is not good, and the sheet metal shell is only wrapped with a layer of iron, and the shell is very hot, sometimes reaching more than 100 ℃. There is a certain danger.

The traditional old-fashioned refractory brick muffle furnace adopts a single-layer shell, and the iron sheet directly wraps the refractory brick. This is the most conventional practice in the past. The advantages are simple structure, easy manufacture, low cost and short production cycle. However, the disadvantage is also obvious, that is, the temperature of the casing is very high during long-term use, and you cannot touch the sheet metal of the casing with your hands, which is very easy to burn.

With the development of science and technology, ceramic fiber insulation board came into being, its main component is alumina. The heat preservation effect is particularly good. In order to make the box-type high temperature resistance muffle furnace more beautiful, safer and more reliable, after several years of improvement, the original single-layer shell has been improved into a double-layer shell, and forced convection is added between the shells. Fan, to ensure that the shell is not hot, more secure.

Our all-in-one intelligent box-type high-temperature muffle furnace adopts double-layer inner shell sheet metal, the furnace sees fire ceramic fiber board + ceramic fiber lining board + 1260 ceramic fiber cotton (slow down thermal expansion and cold contraction) + inner tank sheet metal + air Thermal insulation + sheet metal casing. And the shell is electrostatically sprayed, not easy to rust, and beautiful. There is also a Delixi fan between the inner tank and the outer shell for forced air cooling, which ensures that the outer shell is not hot and safer .