When the furnace pressure is negative, for example -10Pa, a suction wind speed of 2.9m/s can be generated. At this time, a large amount of cold air will be sucked in from the furnace mouth and other loose places, resulting in increased heat loss of the blast furnace flue gas. ; When the pressure inside the furnace is a positive value, the high-temperature flue gas will escape outside the furnace, which also leads to heat loss caused by the escaped flue gas.Vacuum Brazing of Aviation Diffuser Components In order to reduce the above-mentioned heat loss, it is necessary to pay attention to adjusting the flue gate at any time during operation to maintain the normal pressure in the furnace. The normal pressure value in the furnace is: for heating furnace and heat treatment furnace, the bottom of the furnace is generally controlled to be zero pressure; for drying furnace, the zero pressure value is controlled at the center of the furnace height. Deformation and Improvement of Vacuum Sintered Cemented Carbide In the structure of the furnace body and the smoke exhaust system, it should be ensured that the chimney has sufficient suction. The adjustment of the flue gate should be flexible and the various openings on the furnace body should be minimized. The distribution of internal pressure achieves the effect of strengthening furnace gas circulation and uniform furnace temperature.Application of Vacuum Heat Treatment in Fastener Manufacturing During the operation, the furnace is not well maintained, and if it is damaged, it is not repaired in time, and most of the operators are not technically trained or do not operate according to the operating procedures. As a result, the furnace mouth, furnace door, trolley frame and various sealing facilities are quickly burned out. Combined with the disrepair of the flue, the exhaust system was not functioning properly, causing the furnace to spit fire everywhere. Above-mentioned phenomenon has increased energy consumption, has deteriorated environment again.Optimal Vacuum Heat Treatment For Bevel Gears