Characteristics of thermal annealing furnace

Application: Tempering, quenching, preheating and other heat treatment of various metal parts and materials

1. The electric furnace is equipped with a hot air circulation device to make the furnace temperature uniform and the workpieces heated uniformly; 2. The electric furnace has a large loading capacity and high productivity, which is suitable for various types of machine parts for tempering, quenching, and preheating; 3. The electric furnace lining uses full Fiber structure, improve the heat insulation performance of the furnace body, save energy and reduce production costs; 4, the electric furnace is convenient to load the material, and the operating conditions are good; 5, the furnace door is double-open front and back, two loading tables work in a wheel flow, save energy and improve efficiency , Easy to operate; 6, the electric furnace is equipped with a chain protection device to prevent malfunctions and accidents due to misoperation; 7, no pollution, good environmental protection benefits.
The shell of this series of electric furnace is welded by steel plate and section steel. The bottom of the furnace body is connected with the trolley light rail as a whole. The user does not need to install the foundation and can only use it on the flat concrete floor.
The furnace lining adopts a full-fiber structure, which saves about 50% energy compared to a brick-type furnace. It uses high-quality long-fiber thorn blankets as raw materials, and uses special equipment to make 300 × 300 × 300 specifications modules, and leaves a certain amount of compression during processing. After the module is completed, each ceramic fiber block expands in different directions, so that the modules are extruded into a whole without gaps, achieving good thermal insulation and thermal insulation effects, and the product is convenient and quick to construct. Compared with other products, the advantages are low thermal conductivity, low heat capacity, excellent corrosion performance, excellent thermal stability and thermal shock resistance, thermal insulation, and the anchor is set on the cold surface of the furnace body, which improves the high temperature strength of the fiber.
The heating element is made of high-temperature resistance alloy wire and wound into strips and spirals. It is hung and placed on the side of the furnace, the door, the back wall and the trolley wire brick, and fixed with high aluminum porcelain nails, which is safe and simple.
The high strength and high temperature resistant cast steel furnace floor is laid on the trolley to carry the workpiece. In order to prevent the oxide scale generated after the workpiece is heated from falling through the gap between the furnace floor and the heating element and causing damage to the heating element, the contact place between the furnace floor and the furnace body is inserted. In order to ensure normal use, the oxide scale under the furnace bottom plate of the trolley needs to be purged frequently. Generally, it is blown once a week. The furnace bottom plate is hoisted during the purging, and the oxide scale debris in the resistance wire groove is cleaned with compressed air. Take care to prevent short-circuiting of the oxide pickup in the furnace wire.
The furnace door device is composed of a furnace door, a furnace door lifting mechanism and a furnace door pressing device. The furnace door shell is made of steel and plate welded into a solid frame structure, and the inside is laminated with refractory fiber pressed modules, which requires good insulation performance and light weight. The hoisting device of the furnace door adopts an electric device, which is mainly composed of a furnace door frame, a furnace door lifting beam, a reducer, a sprocket, a drive shaft and a bearing. The furnace door is lifted by the forward and reverse transmission on the reducer to drive the furnace door to rise and fall. . Furnace door lift reducer is also equipped with a brake device, which can effectively prevent the door from moving during the lifting process. The furnace door pressing device adopts the domestic advanced spring-type lever pressing structure. When the furnace needs to be lifted, the self-weight of the furnace door automatically releases the furnace door through the lever and moves horizontally after a certain distance to rise. When the furnace door is lowered into place, The door of the furnace is moved horizontally into a tightly sealed state by the elastic force of a spring, and the compaction device of this structure makes the furnace door free of friction when it is up and down, and has the characteristics of good safety performance and long use mission.