Heating furnace and vacuum furnace
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What are the structures of heating furnaces and vacuum furnaces, and what are their working principles? It would be better if there are pictures
It’s hard to explain this clearly in just a short time; it’s best to read the book yourself!
A vacuum furnace is a type of heating furnace named according to its different industrial applications； Its feature is an enlarged diameter of the furnace tube in the outlet section; otherwise, there are no differences.
We use vertical cylindrical furnaces, in which gas or fuel oil is burned; heat is transferred to the material through radiation within the furnace tubes as well as through convection.