Steel shell furnace body (with cyclone dust cover)

Added furnace body video display on top of the steel shell furnace body (with cyclone dust hood).

   
　　The closed steel shell furnace body includes: enclosed furnace frame, sensor, magnetic yoke, furnace cover, dust removal system, tilting furnace oil cylinder, furnace cover rotating oil cylinder, high-pressure carbon-free rubber hose, furnace mouth and bottom casting fixed material, anti-fall device, a full set of stainless steel water inlet distributor, return water collector and clamps, etc., including stainless steel water distributors for inlet and outlet water.

　　b1. The following are the main components of the steel shell furnace:
　　a) Enclosed steel frame structure, easy for daily maintenance and inspection; steel plates welded into the basic structure of the furnace frame, with a simple and sturdy overall structure, maximum furnace tilt angle of 95 degrees.
　　b) The furnace platform surface is coated with knot-resistant refractory material, providing better protection for the furnace body, and the furnace platform will not deform.
　　c) Welded steel structure equipped with appropriate supports and clamps to fix the induction furnace coil and magnetic yoke; the upper components of the induction furnace are detachable, making coil replacement more convenient.
　　d) Pillars — heavy-duty steel components on both sides, serving as the strongest support for the furnace body, providing the axis for hydraulic tilting, with the axis shifted outward and upward. This ensures minimal movement trajectory of the tapping port, reduces tapping energy loss, and facilitates automatic and direct molten iron receiving devices.
　　e) The induction coil is assembled from solid, durable, high-conductivity oxygen-free copper tubes. The water-cooled coil and effective coil are integrally wound from copper tubes without segmentation. Adjacent copper tubes of the two turns of the induction coil are strictly insulated using advanced segmentation technology, with insulating sheets inserted between adjacent coils. After being sprayed with insulating varnish, the coil forms a complete structure, pressed by upper and lower steel structures within the furnace body, resulting in a sturdy overall structure without deformation issues. The number of coil turns is appropriate to achieve maximum electrical efficiency. The copper tubes of the induction coil are made of oxygen-free copper produced by Zhongluo Copper with 99.9% purity and conductivity above 100. The coil is supplied with cooling water through multiple water channels, evenly distributed. The coil exterior is tightly wrapped with insulating material. Arc-shaped insulating pads between turns ensure uniform coil spacing and facilitate moisture discharge.
　　f) The induction coil insulating varnish uses imported porcelain enamel paint, applied and baked five times, achieving an insulation rating of Class H.
　　g) The magnetic yoke is evenly stressed by parallel bolts and provides maximum pressing force to the coil, ensuring a longer service life of the furnace lining. The magnetic yoke is made of 0.3mm thick high-quality cold-rolled oriented silicon steel sheets produced by WISCO. After processing, the silicon steel sheets have a cutting burr tolerance of less than ±0.1mm. After assembly, bending and parallelism ensure arc-shaped contact between the coil and magnetic yoke, achieving precise coupling. Multiple sets of magnetic yoke fastening devices are firm and reliable, easy to assemble, adjust, and maintain, and are evenly distributed along the circumference (error ≤ 0.5). The padding between the magnetic yoke and coil uses multilayer high-quality insulating materials, including multilayer mica sheets and multilayer ceramic fiber boards.
　　i) Formed insulation boards and short-circuit rings are installed on the furnace top and bottom.
　　j) The composite leak-proof probe is safe and reliable. When molten iron invades or is about to penetrate the refractory material and coil, it automatically cuts off the power and alarms. The composite leak-proof probe is an important part of the entire leak furnace protection system. It also ensures molten iron grounding, ensuring operator safety.
　　k) The furnace body is equipped with emergency lifting holes.
　　l) The furnace bottom structure meets the requirements for removing the furnace lining using a lining pushing mechanism. It is easy to install and operate.

　　b2. Cyclone dust hood
　　The smoke hood with furnace cover features a sturdy steel structure design. The furnace cover, built with refractory materials, is fixed on the furnace frame and can be opened front and back. During the electric furnace melting process, the entire smoke hood remains closed, with the furnace cover covering the melting pot crucible to reduce heat loss during charging, melting, and slagging processes. Meanwhile, the smoke hood uses a certain suction volume to remove dust and exhaust gases, improving exhaust emission effects.
　　The welded steel smoke hood shell is connected to the exhaust gas discharge pipeline system via a flange located on the furnace rotation axis. When the entire insulated furnace cover is opened, charging operations are performed. The insulated furnace cover can rotate in reverse, facilitating furnace lining removal without dismantling the smoke hood; it also facilitates maintenance of the induction furnace tapping port. The smoke hood with furnace cover should operate under the suction volume provided by Mengke Company (for a single furnace body). Please configure and select dust removal equipment and pipelines according to the suction volume requirements.

　　b3. Furnace lining quick ejection device
　　The furnace lining quick ejection mechanism uses a hydraulic cylinder for ejection, with hydraulic power sourced from the electric furnace hydraulic station. It mainly includes:
　　a. Pre-designed steel structure quick connection guide rails at the bottom of the furnace body.
　　b. A set of frame trial-installed ejection mechanism, including ejection cylinder, hydraulic oil pipes, control valve, and oil pipe control valve. This mechanism is easy to assemble and disassemble. Once the furnace cools below 400°C, the furnace body is tilted 90°, the cylinder is lifted by a crane and directly placed on the pre-designed guide rails at the furnace bottom via flange connection, then the hydraulic pump station is started to eject the furnace lining. One set of ejection mechanism can be used with several furnace bodies.

　　b4. Anti-fall protection device
　　The furnace body is equipped with an anti-fall protection device. During furnace tilting, the anti-fall protective cover automatically rises, forming a protective barrier to prevent personnel from falling, ensuring the safety of operators on the furnace platform. The protection device is integrated with the furnace body as a unified whole, with a delicate mechanism that combines firmness, aesthetics, and safety reliability.