Quenching Overhead Crane for Heat Treatment Plant: High-Temperature Insulated and Efficient Lifting Solution
The quenching overhead crane is a bridge crane designed specifically for vertical quenching heat treatment processes. It features rapid lowering and emergency brake release capabilities in case of accidents. This specialized lifting equipment is typically installed in heat treatment workshops. The crane commonly adopts a double-girder, single trolley structure.
- Lifting Capacity: 32t – 350t
- Span: 20m – 34m
- Lifting Height: 15m – 36m
Functions and Applications
The quenching overhead crane is a type of metallurgical crane used in the vertical quenching process for metal heat treatment. It is employed to quickly immerse large or long workpieces into quenching fluids. This crane is primarily used for quenching processes where the cooling medium is salt water, water, or mineral oil. In these processes, it is crucial to rapidly immerse the hot workpiece into the quenching bath to ensure uniform metallographic structure on both sides of the workpiece. It also helps prevent the ignition of the oil surface during oil quenching.
For a more intuitive understanding of how a quenching overhead crane is used for heat treatment of large shaft components in a vertical quenching furnace, please click on the video link below.
Performance Features
- The lifting mechanism is equipped with a downstroke limit device. During rapid descent, it should not operate simultaneously with other mechanisms.
- To ensure even heat treatment of long workpieces and prevent ignition of the quenching fluid, the crane features a rapid lowering function.
- The operator's cabin is insulated, and cooling facilities should be installed. The cabin must also have necessary emergency escape measures.
- The lifting mechanism with rapid lowering function is equipped with an overspeed protection device.
- The movable pulley group on the hook is protected by a guard to prevent splashing of quenching oil. Additionally, the hook is equipped with an anti-unhooking device.
- Steel core wire ropes are used for enhanced durability.
Case
20-Ton Quenching Overhead Crane for Heat Treatment Plant with Φ3m × 2m Carburizing Furnace
Key Parameters
- Rated Lifting Capacity: 20 tons (with large trolley wheel pressure not exceeding 180 kN)
- Workshop Span: 24 meters
- Large Trolley Span: 22.5 meters (to be measured on-site by the supplier)
- Working Class: A7
- Lifting Height: 9 meters (with hook top clearance ≥ 7 meters)
Features
- The quenching overhead crane is specifically designed for quenching applications. The main girder, trolley, and other critical components are equipped with high-temperature insulation protection measures.
- The crane’s electrical control equipment is arranged on the bridge, and the electrical components are housed in sealed enclosures for protection.
- The main lifting mechanism utilizes dual brakes, with hydraulic push-rod brakes. It also includes a release function that can be operated at the trolley position in case of emergencies.
- The large trolley drive mechanism adopts dual-drive technology. The trolley drive structure uses centralized drive, and track sweepers are installed in front of the large and small trolley wheels.
- The wire ropes and lifting equipment used are designed to meet the high-temperature resistance requirements for metallurgical cranes.
- An overload indicator is installed in a prominent location, displaying real-time weight. If the crane is overloaded, it will automatically cut off the power.
- Power Supply: The trolley power supply uses a high-temperature resistant flat cable drag system, and the pulley block is equipped with I-beam steel.
- The quenching overhead crane is equipped with an anti-sway function to ensure smooth operation.
- The crane features a collision prevention device that is secure, sturdy, and reliable.
At DGCRANE, our experienced team is dedicated to providing reliable and safe quenching overhead cranes tailored to the specific needs of heat treatment plants. We focus on delivering high-quality products designed for durability and performance in demanding environments, ensuring that our cranes meet industry standards and support your operations effectively.
