Industrial furnace

Bogie hearth resistance furnace

The RT series trolley type resistance furnace is a national standard energy-saving periodic operation furnace, with a super energy-saving structure and fiber structure, saving 30% electricity. Exclusive production uses composite high aluminum porcelain nail sets, trolley anti-collision sealing bricks, automatic sealing trolley and furnace door, integrated rail connection, no need for foundation installation, can be used on a horizontal ground. Mainly used for quenching, annealing, aging, and heat treatment of various mechanical parts such as high chromium, high manganese steel castings, ductile iron, rolling rolls, steel balls, 45 steel, stainless steel, etc.
The shell of this series of electric furnaces is welded with steel plates and steel sections, and the bottom of the furnace body is connected to the trolley light rail as a whole. Users do not need basic installation, only need to place it on a flat cement ground to use.
The furnace lining adopts a full fiber structure, which saves about 60% energy compared to brick furnaces. It uses high-quality long fiber felt as raw material and is made into specifications of 300 × 300 × 300 using specialized equipment. A certain amount of compression is left during the processing to ensure that each ceramic fiber block expands in different directions after the module is built, so that the modules are squeezed into a seamless whole, achieving good heat storage effect. Moreover, this product is easy and fast to construct, and can be directly fixed to the stainless steel anchor round nails of the furnace shell steel plate. Compared with other products, the advantages are low thermal conductivity, low heat capacity, excellent corrosion resistance, excellent thermal stability, thermal shock resistance, insulation, and the anchor is set on the cold surface of the furnace body, which improves the high temperature resistance strength of the fiber.
The heating element is made of high-temperature resistance alloy wire wound into strips and spirals, which are hung on the furnace side, furnace door, rear wall, and wire support brick of the placement trolley, and fixed with high aluminum porcelain nails for safety and simplicity.
The trolley is equipped with a pressure resistant and high-temperature resistant cast steel furnace bottom plate for carrying workpieces. In order to prevent the oxide scale generated after heating the workpiece from falling around the heating element through the gaps between the furnace bottom plates and causing damage to the heating element, an insertion type contact is used at the contact between the furnace bottom plate and the furnace body. To ensure normal use, it is necessary to frequently blow the oxide scale under the furnace bottom plate of the trolley, usually once a week. When blowing, lift the furnace bottom plate and use compressed air to blow the oxide scale in the resistance wire groove clean. Be careful to prevent the oxide pickup from causing a short circuit inside the furnace wire.
The furnace door device consists of a furnace door, a furnace door lifting mechanism, and a furnace door clamping device. The furnace door shell is made of welded steel and sheet metal to form a sturdy frame structure, with refractory fiber pressed modules stacked inside. It is required to have good insulation performance and light weight. The lifting device of the furnace door adopts an electric device, mainly composed of a furnace door frame, a furnace door lifting crossbeam, a reducer, a sprocket, a transmission shaft, and bearings. The lifting of the furnace door is driven by the forward and backward transmission of the reducer. The furnace door lifting reducer is also equipped with a brake device, which can effectively prevent displacement of the furnace door during the lifting process. The furnace door clamping device adopts an advanced spring type clamping structure in China. When the furnace needs to be lifted, the self weight of the furnace door is automatically released by a lever, and it moves horizontally out of a certain distance before rising. When the furnace door is lowered into place and needs to be clamped on the pulley on the trolley, the spring force is used to move the furnace door horizontally into a compressed and sealed state through the lever. This structure of the clamping device ensures that there is no friction between the fiber plane on the furnace door and the cotton at the furnace mouth, and has the characteristics of good safety performance and long service life.
The trolley frame is formed by welding steel sections, and its rigidity ensures that it will not deform under full load. The interior is built with refractory bricks, and the collision prone and load-bearing parts are built with heavy bricks to enhance the strength of the furnace lining structure. The trolley adopts a self-propelled structure, driven by a reducer sprocket to move on the track. The sealing of the trolley adopts an automatic labyrinth structure and soft contact double sealing. The trolley enters the furnace through the action of a cam and roller slope, and automatically rises for sealing. When the trolley is driven out, the sealing groove automatically falls down, and the sealing sand in the sealing groove does not need to be added frequently after being filled up. The trolley is driven out and the furnace door is raised and lowered by electric control, equipped with electromagnetic brakes to prevent inertia from hitting the furnace body. It is also interlocked control, that is, when the furnace door is slightly opened, the heating element is automatically cut off and the power supply of the trolley walking mechanism is restored. After the furnace door is closed in place, the power supply of the trolley walking mechanism is automatically cut off, and the power supply of the heating element is restored at the same time.
In order to shorten the cooling process time, the furnace top can be equipped with an exhaust device to accelerate cooling. The device is turned off when heated, and turned on and off when cooled to a certain temperature by the operator on one side of the furnace through manual or automatic control.
If you are unable to determine the furnace size, you can refer to our company's standardized products on the homepage of the website. Or contact me directly. Note: Our company can design, modify and produce according to customer requirements. Please feel free to call us for consultation and negotiation. We are available during holidays and weekends.

The large trolley type resistance furnace is a national standard energy-saving periodic operation furnace, with a super energy-saving structure and fiber structure, saving 30% electricity. Exclusive production uses composite high aluminum porcelain nail sets, trolley anti-collision sealing bricks, automatic sealing trolley and furnace door, integrated rail connection, no need for foundation installation, can be used on a horizontal ground. Mainly used for quenching, annealing, aging, and heat treatment of various mechanical parts such as high chromium, high manganese steel castings, ductile iron, rolling rolls, steel balls, 45 steel, stainless steel, etc.
The shell of this series of electric furnaces is welded with steel plates and steel sections, and the bottom of the furnace body is connected to the trolley light rail as a whole. Users do not need basic installation, only need to place it on a flat cement ground to use.
The furnace lining adopts a full fiber structure, which saves about 60% energy compared to brick furnaces. It uses high-quality long fiber felt as raw material and is made into specifications of 300 × 300 × 300 using specialized equipment. A certain amount of compression is left during the processing to ensure that each ceramic fiber block expands in different directions after the module is built, so that the modules are squeezed into a seamless whole, achieving good heat storage effect. Moreover, this product is easy and fast to construct, and can be directly fixed to the stainless steel anchor round nails of the furnace shell steel plate. Compared with other products, the advantages are low thermal conductivity, low heat capacity, excellent corrosion resistance, excellent thermal stability, thermal shock resistance, insulation, and the anchor is set on the cold surface of the furnace body, which improves the high temperature resistance strength of the fiber.
The heating element is made of high-temperature resistance alloy wire wound into strips and spirals, which are hung on the furnace side, furnace door, rear wall, and wire support brick of the placement trolley, and fixed with high aluminum porcelain nails for safety and simplicity.
The trolley is equipped with a pressure resistant and high-temperature resistant cast steel furnace bottom plate for carrying workpieces. In order to prevent the oxide scale generated after heating the workpiece from falling around the heating element through the gaps between the furnace bottom plates and causing damage to the heating element, an insertion type contact is used at the contact between the furnace bottom plate and the furnace body. To ensure normal use, it is necessary to frequently blow the oxide scale under the furnace bottom plate of the trolley, usually once a week. When blowing, lift the furnace bottom plate and use compressed air to blow the oxide scale in the resistance wire groove clean. Be careful to prevent the oxide pickup from causing a short circuit inside the furnace wire.
The furnace door device consists of a furnace door, a furnace door lifting mechanism, and a furnace door clamping device. The furnace door shell is made of welded steel and sheet metal to form a sturdy frame structure, with refractory fiber pressed modules stacked inside. It is required to have good insulation performance and light weight. The lifting device of the furnace door adopts an electric device, mainly composed of a furnace door frame, a furnace door lifting crossbeam, a reducer, a sprocket, a transmission shaft, and bearings. The lifting of the furnace door is driven by the forward and backward transmission of the reducer. The furnace door lifting reducer is also equipped with a brake device, which can effectively prevent displacement of the furnace door during the lifting process. The furnace door clamping device adopts an advanced spring type clamping structure in China. When the furnace needs to be lifted, the self weight of the furnace door is automatically released by a lever, and it moves horizontally out of a certain distance before rising. When the furnace door is lowered into place and needs to be clamped on the pulley on the trolley, the spring force is used to move the furnace door horizontally into a compressed and sealed state through the lever. This structure of the clamping device ensures that there is no friction between the fiber plane on the furnace door and the cotton at the furnace mouth, and has the characteristics of good safety performance and long service life.
The trolley frame is formed by welding steel sections, and its rigidity ensures that it will not deform under full load. The interior is built with refractory bricks, and the collision prone and load-bearing parts are built with heavy bricks to enhance the strength of the furnace lining structure. The trolley adopts a self-propelled structure, driven by a reducer sprocket to move on the track. The sealing of the trolley adopts an automatic labyrinth structure and soft contact double sealing. The trolley enters the furnace through the action of a cam and roller slope, and automatically rises for sealing. When the trolley is driven out, the sealing groove automatically falls down, and the sealing sand in the sealing groove does not need to be added frequently after being filled up. The trolley is driven out and the furnace door is raised and lowered by electric control, equipped with electromagnetic brakes to prevent inertia from hitting the furnace body. It is also interlocked control, that is, when the furnace door is slightly opened, the heating element is automatically cut off and the power supply of the trolley walking mechanism is restored. After the furnace door is closed in place, the power supply of the trolley walking mechanism is automatically cut off, and the power supply of the heating element is restored at the same time.
In order to shorten the cooling process time, the furnace top can be equipped with an exhaust device to accelerate cooling. The device is turned off when heated, and turned on and off when cooled to a certain temperature by the operator on one side of the furnace through manual or automatic control.
If you are unable to determine the furnace size, you can refer to our company's standardized products on the homepage of the website.