Raising Hearth Furnace

A raising hearth furnace allows the base or the hearth to be lowered and raised at an elevated temperature using an automatic arrangement to place or remove samples thus saving the user from heat or the hot heating elements, which are fragile, from air and save them from thermal shock failure when they come in contact with air.  

A raising hearth furnace provides the user with a cuboidal or cylindrical hot zone wherein the height of the furnace is greater than the dimensions of its base.  As only the base is movable, the furnace allows heating from all four sides or six sides in case furnace has a hexagonal cross section.