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 رافعة جسرية, 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.
نظرة عامة على المعدات
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
سيناريوهات التطبيقات الأساسية
Billet Transfer
Task: Handling hot billets (45 tons each, 15 m long)
أداء:
نظام الإمساك المغناطيسي التلقائي (الاستجابة ≤ 3 ثوانٍ)
نظام ذكي لمنع الاصطدام بين الجسر والعربة
Transfer efficiency increased by 60%
تم تقليل التدخل اليدوي بواسطة 80%
Plate Yard Management
Task: Multi-layer plate stacking (12 tons per plate)
أداء:
دقة تحديد المواقع بالليزر ±10 مم
تم تحسين استخدام الساحة بواسطة 40%
مساعدة الصيانة
Task: Lifting mill rolls and bearing housings (up to 20 tons each)
أداء:
التحكم في سرعة التردد المتغير (0.5–10 م/دقيقة)
نظام هيدروليكي مضاد للتأرجح
تم تحسين سلامة الصيانة بواسطة 75%
الابتكارات التقنية الرئيسية
نظام الدفع المزدوج الكهرومغناطيسي والميكانيكي
Redundant electromagnetic power with UPS ensures 15 minutes of magnetic holding during power loss
Optional mechanical grab mode for mixed material handling
المراقبة الذكية والإنذار المبكر
مراقبة متكاملة للإجهاد ودرجة الحرارة ومقاومة الاصطدام
Real-time transmission of key parameters to the central dispatch system
تصميم السلامة الهيكلية المعزز
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
أنا سيندي، ولدي 10 سنوات من الخبرة العملية في صناعة الرافعات واكتسبت ثروة من المعرفة المهنية. لقد اخترت الرافعات المرضية لأكثر من 500 عميل. إذا كانت لديك أي احتياجات أو أسئلة حول الرافعات، فلا تتردد في الاتصال بي، وسأستخدم خبرتي وخبرتي العملية لمساعدتك في حل المشكلة!