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The pit annealing furnace is a batch heat treatment furnace that works by maintaining a consistent and controllable temperature distribution in the furnace chamber during the annealing process to achieve the desired effect. The furnace is used for large-scale processing of metal parts, such as coils, bars, strips or metal plates. In a pit annealing furnace, the material to be treated is placed in the furnace chamber and heated there for a long time. The main function of this furnace is to allow the metal to undergo a controlled heating and cooling cycle. This process changes the physical properties of the metal, mainly improving its softness, ductility and hardness to meet the requirements of downstream processes such as machining, rolling or further forming. A major feature of the pit annealing furnace is the pit design, that is, the furnace is located in a vertical structure in the center of the furnace chamber. The annealing material is loaded into the furnace chamber from above. The furnace chamber is heated using gas or resistance heaters. The heat distribution system in the furnace chamber ensures uniform heating to avoid hot spots or uneven annealing, which can to poor annealing results. Pit annealing furnaces can be used to process a wide range of metal products, from thin metal strips to thick billets or large coils. This flexibility makes it suitable for industries that process different types of metal materials and different heat treatment requirements. Its modular design allows users to easily expand or modify the furnace setup according to their needs.
