50 インド製鉄所で使用されるトン天井クレーン

プロジェクトの背景

India’s steel industry features continuous high-load operation, 高温, 重い粉塵, flue gas corrosion and frequent cyclic lifting. Steel mill lifting equipment requires stable load-bearing capacity, excellent environmental adaptability and high safety to meet long-shift industrial production requirements.

This project targets a large integrated steel plant in eastern India, covering iron smelting, steel casting, coil rolling and finished product delivery. Previously, outdated on-site overhead cranes had insufficient load capacity and poor stability. Prone to frequent breakdowns under high-frequency heavy-load and harsh workshop conditions, they caused repeated production halts, low productivity and excessive maintenance costs.

To eliminate lifting bottlenecks, boost handling efficiency and reduce unplanned downtime, the plant upgraded its core lifting equipment. Based on local working conditions and production load demands, a customized 50-ton double girder overhead crane was installed for full-process production lifting. インストール後, commissioning and long-term field operation, the crane perfectly adapts to the plant’s harsh environment and delivers stable, high-efficiency lifting performance.

Technical Parameters of On-Site 50 トン天井クレーン

This 50-ton double girder overhead crane is tailored for A6 heavy-duty working conditions, complying with Indian industrial power standards and on-site workshop layout. Its core technical parameters are listed below:

Product Advantages Verified in On-Site Operation

Strong Adaptability to Steel Plant Harsh Conditions

Customized for steel mills’ high-temperature, dusty and corrosive environments, this crane adopts high-strength low-alloy steel for the main beam, featuring outstanding heat and oxidation resistance. It maintains stable structural performance without deformation during long-term continuous operation near smelting furnaces. Equipped with dustproof and heat-dissipating electrical components and IP54 protection grade, it avoids circuit and component damage from harsh conditions, supporting 24-hour stable operation for steel production.

Smooth Variable Frequency Operation & High Positioning Accuracy

Adopting full variable frequency speed regulation, the crane eliminates sudden starts, stops and load swing common in traditional cranes, ensuring smooth operation and high positioning accuracy. It greatly improves safety when lifting heavy steel ingots and molten steel ladles. The dual control mode of wireless remote control and cab operation enables flexible adjustment according to on-site conditions, reducing operational errors and improving overall working efficiency.

Complete Safety Configuration for Heavy-Duty Production

Matching steel production’s high-risk working characteristics, the crane is equipped with comprehensive safety devices including overload, height and travel limit protection, power-off braking and emergency stop functions. It automatically locks operations under abnormal conditions to prevent load falling and equipment collisions. The built-in fault self-inspection system enables maintenance personnel to quickly locate faults, eliminating potential safety hazards in daily production.

堅牢な構造 & Low On-Site Maintenance

Key load-bearing components adopt integral welding and forging technology, with high rigidity and strong fatigue resistance to adapt to A6 frequent heavy-duty cyclic work. Vulnerable parts use high-temperature and wear-resistant materials suitable for steel mill scenarios. The modular design simplifies daily inspection and parts replacement, effectively reducing on-site failure rates, maintenance workload and operational costs, and ensuring continuous production line operation.

Practical On-Site Applications in Steel Plant

原材料の取り扱い

The crane undertakes stacking and transshipment of scrap steel, 鉄鉱石, coke and other bulk raw materials in stockyards and processing areas. Its 50-ton rated load enables one-time lifting of heavy material bundles, avoiding repeated low-efficiency handling. Stable variable-frequency operation prevents material spillage, standardizes on-site stacking and ensures consistent material supply for smelting.

High-Temperature Workshop Semi-Finished Product Transfer

In high-temperature smelting and casting workshops, the crane handles molten steel ladles and steel ingot transfers. Its excellent heat resistance and operational stability adapt to intense furnace heat radiation, while precise positioning guarantees accurate pouring and docking. これにより、継続的な, stable smelting and casting processes and avoids product quality fluctuations from unstable lifting.

Production Equipment Maintenance & Heavy Parts Lifting

Steel plant core equipment such as smelting furnaces and rolling mills requires regular overhaul and parts replacement. This 50-ton crane is widely used for lifting and installing heavy production equipment. Flexible dual-control operation adapts to narrow, high-altitude maintenance scenarios, and reliable safety configurations guarantee heavy-duty operation safety, shortening overhaul cycles and reducing production downtime.

Finished Steel Warehousing & Shipment

In finished product warehouses, the crane is responsible for stacking, handling and truck loading of steel coils, plates and profile steels. Its stable and efficient operating speed greatly improves warehousing and delivery efficiency. Effective load swing suppression prevents finished steel surface damage and deformation, protecting product quality and supporting efficient warehouse logistics.

On-Site Operation Effect & 結論

After long-term field operation, the customized 50-ton overhead crane stably adapts to the plant’s high-intensity harsh working conditions with zero major safety incidents. Compared with old equipment, it increases overall handling efficiency by over 30% and reduces failure rate by 40%. It effectively cuts unplanned downtime and maintenance costs, solves long-term production lifting bottlenecks, and provides reliable heavy-duty lifting support for the steel plant’s efficient and stable operation.