Elektromagnetischer Portalkran für verbesserte Knüppelhandhabungseffizienz

Client Background: Jiangsu Nanjing Iron & Steel (Nangang)

Jiangsu Nanjing Iron & Steel Co., Ltd. (Nangang) is a major steel producer in East China, known for its advanced rolling mills, high-quality plate and section steel production, and strong commitment to intelligent and green manufacturing. As part of its smart plant upgrade strategy, Nangang sought to optimize billet and plate handling efficiency in its rolling workshop. To support this initiative, the company adopted DAFANG’s intelligent Electromagnetic Portalkran, enabling a significant leap in automation, safety, and operational performance.

Electromagnetic Gantry Crane Applied in Rolling Workshop Material Handling

By deploying DAFANG’s electromagnetic gantry crane, Jiangsu Nangang achieved intelligent upgrading of the material handling process in its rolling workshop. With electromagnetic adsorption technology, laser positioning, and an intelligent monitoring platform as its core features, the equipment greatly enhanced efficiency and operational safety, delivering an “efficient, safe, and green” logistics solution for the metallurgical industry. This project demonstrates the development of gantry cranes toward higher specialization and smarter operation, helping the client achieve cost reduction and productivity improvement.

Geräteübersicht

To improve billet handling efficiency in the rolling workshop, Nangang introduced the Electromagnetic Gantry Crane featuring:

• Double-girder design
• Rated lifting capacity: 50 tons
• Span: 32 m
• Lifting height: 24 m
• Electromagnetic lifting disc: Ø 3 m, magnetic force 35 tons
• Operation modes: ground remote control + cabin control
• Full compliance with GB/T 3811 crane design standard
• Certified to ISO 12482
• Specially engineered for high-temperature and heavy-dust metallurgical environments

Kernanwendungsszenarien

Billet Transfer

• Task: Handling hot billets (45 tons each, 15 m long)
• Leistung:
• Automatisches magnetisches Greifsystem (Reaktionszeit ≤ 3 s)
• Intelligentes Antikollisionssystem für Brücke und Fahrbahn
• Transfer efficiency increased by 60%
• Manuelle Eingriffe wurden durch 80% reduziert.

Plate Yard Management

• Task: Multi-layer plate stacking (12 tons per plate)
• Leistung:
• Laserpositionierungsgenauigkeit ±10 mm
• Die Auslastung des Geländes wurde um 40% verbessert.

Wartungsunterstützung

• Task: Lifting mill rolls and bearing housings (up to 20 tons each)
• Leistung:
• Drehzahlregelung mit variabler Frequenz (0,5–10 m/min)
• Hydraulisches Antischlingersystem
• Die Wartungssicherheit wurde durch 75% verbessert.

Wichtige technische Innovationen

Elektromagnetisch-mechanisches Doppelantriebssystem

• Redundant electromagnetic power with UPS ensures 15 minutes of magnetic holding during power loss
• Optional mechanical grab mode for mixed material handling

Intelligente Überwachung und Frühwarnung

• Integriertes Stress-, Temperatur- und Antikollisionsmonitoring
• Real-time transmission of key parameters to the central dispatch system

Verbesserte strukturelle Sicherheit

• Main girders welded from Q345D high-strength steel, with local reinforcement using Q460E
• Equipped with wind-proof anchoring system (resistance up to Level 12 winds)

User Feedback & Practical Benefits

Efficiency Improvement

• Billet turnover in the rolling workshop increased from 1,800 t/day → 2,500 t/day, accelerating production rhythm by 35%.

Cost Optimization

• Electromagnetic lifting consumes 40% less energy compared with mechanical grabs → Annual electricity savings approx. 800,000 RMB

Safety Performance

• Zero safety incidents in five years of operation
• Certified to ISO 45001 occupational health & safety standard

Cindy

WhatsApp: +86-19137386654

Email: cindywang@hndfcrane.com

Ich bin Cindy, habe 10 Jahre Berufserfahrung in der Kranbranche und eine Fülle an Fachwissen angesammelt. Ich habe für über 500 Kunden die zufriedenstellendsten Kräne ausgewählt. Wenn Sie irgendwelche Bedürfnisse oder Fragen zu Kränen haben, können Sie sich gerne an mich wenden. Ich werde mein Fachwissen und meine praktische Erfahrung nutzen, um Ihnen bei der Lösung des Problems zu helfen!