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According to the appearance, they are roughly divided into the following four categories: box furnaces, vertical furnaces, cylindrical furnaces, and large square furnaces. This classification method is based on the appearance of the radiation chamber and has nothing to do with the convection chamber. The so-called box furnace, as its name implies, has a radiation chamber that is a "box-shaped" hexahedron. vacuum-brazing-repair-method-for-cracks Compared with it, the width of the radiation chamber of the vertical furnace is narrower, and the ratio between the distance between the two side walls and the height of the furnace is about 1:2. The names of cylindrical furnace and large square furnace are also derived from the same reason. This is an early type of tube furnace.Vacuum brazing of ceramic and metal materials The burner burns horizontally, and the flue gas flows from top to bottom through the convection chamber across the partition wall between the radiant chamber and the convection chamber. The main disadvantage of this furnace type is the tube laying rate (the radiant chamber row has The ratio of the furnace wall of the tank to the total furnace wall area of the radiation chamber is low, and the furnace is large; the furnace tube needs to be hung with alloy, which is expensive; and an independent chimney is required. It is almost no longer used these days.Atmospheric Pressure and Vacuum Sintering of High Purity Dense MgO Ceramics The furnace space and furnace walls are utilized. Their advantage is that as long as the number of central partition walls is increased, the furnace can be enlarged in a "building block combination" while keeping the heating intensity of the furnace volume unchanged, so they are particularly suitable for large furnaces. When the heat load is large, although They also suffer from some of the inherent disadvantages of box furnaces, which are offset by the advantages mentioned above.Applied Crack Repair Technology of Vacuum Brazing
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