Moving Cover Type Annealing Furnace For Metal Normalizing Quenching Tempering

※ Product use:

Moving cover type annealing furnace can be used for normalizing, quenching, tempering and other heat treatment of metal materials and parts. Automatic entry and exit of the bottom car under controlled conditions. The workpiece is mounted on the trolley, and enters the heating furnace body under the action of the transmission mechanism, and closes the furnace door; The heating temperature is under the control of the electrical appliance, heated to the required temperature of the workpiece, and then according to the completion of the process flow of the workpiece, the workpiece is driven by the drive mechanism to open the heating furnace, so as to complete the processing of the workpiece.

※ Structure Composition

• furnace platform: usually welded by section steel and steel plate, as the base platform for bearing the material to be annealed and the inner cover and outer cover, it is required to have sufficient strength and stability to withstand the weight of the furnace cover and material. Some furnaces are also equipped with rails to facilitate the movement of the hood.
• inner cover: generally made of heat-resistant steel, its function is to isolate the material to be annealed from the external environment, forming a relatively independent annealing space. The lower part of the inner cover is usually equipped with a circulating fan to strengthen the control atmosphere and promote the coil convection heating, so that the temperature in the furnace is more uniform.
• cover: mainly plays the role of protection and heat insulation, to prevent heat loss to the surrounding environment, but also to protect the operator from high temperature damage. The outer cover is generally made of steel plate, and the interior is lined with thermal insulation materials, such as ceramic fiber and rock wool.
• Heating device: there are two common ways of gas heating and electric heating. Gas heating transfers the heat generated by gas combustion to the inner cover and materials through the burner; Electric heating is the use of resistance wire or other electric heating elements to generate heat, with the advantages of fast heating speed and accurate temperature control.
• Temperature control system: composed of temperature sensor, controller and actuator. The temperature sensor monitors the temperature in the furnace in real time, and feedbacks the temperature signal to the controller, which controls the power or gas flow of the heating device according to the set temperature value, so that the temperature in the furnace is kept within the set range, ensuring the accuracy and stability of the annealing process.
• Cooling system: After annealing, the material needs to be cooled. The cooling system is usually air-cooled or water-cooled, and the cold air or cold water is passed into the furnace to take away the heat of the material and the furnace cover to achieve rapid cooling.

※ Working principle

The working principle of the moving hood annealing furnace is based on the annealing process of the metal material. First, the metal material to be treated is placed on the stove, covered with an inner cover, and then covered with an outer cover. Then, the heating device is started, so that the temperature in the furnace gradually rises according to the predetermined heating rate, when the annealing temperature is reached, it is maintained for a period of time, so that the grain of the metal material is fully grown, and the internal stress is released. After the insulation is finished, the cooling system is started to cool the metal material at an appropriate speed, so as to obtain the desired organizational structure and performance.

※ Performance Characteristics

• high flexibility: the cover body can be moved, and multiple furnaces can share one or more covers, which improves the utilization rate of the equipment and reduces the equipment investment cost. At the same time, it also facilitates the maintenance and overhaul of the equipment, and when a furnace or cover fails, the cover can be moved to other furnaces to continue production, reducing the downtime.
• good temperature uniformity: through the circulating fan at the lower part of the inner cover, the atmosphere in the furnace forms a forced convection, which can effectively improve the uniformity of the temperature in the furnace and ensure the consistent performance of the annealed metal materials.
• high annealing quality: accurate temperature control system and reasonable annealing process can make metal materials fully treated in the annealing process, effectively improve the structure and properties of materials, such as reducing hardness, improving plasticity and toughness, eliminating residual stress, etc., so as to improve the quality and service life of products.
• Energy saving and environmental protection: good heat insulation performance of the outer cover reduces heat loss and energy consumption; At the same time, the advanced combustion technology and waste gas treatment system make the gas combustion more fully, reduce the exhaust gas emission, and be more friendly to the environment.

※ Design and Manufacture certification:

• The indicators are designed and manufactured according to the national standards of industrial furnaces
• Conduct the performance test of various components and issue a report (support customer on-site pre-acceptance)
• The export of equipment meets the international standards for export.

Technical parameter