課題
周波数インバータは、冶金システムにおける効率的な省エネと精密制御の中核設備です。モータ速度を精密に調整することで、生産工程全体に適用されます：原材料工程では搬送・破砕設備を制御して安定供出と省エネを実現。製鋼工程では転炉・酸素ランス・連続鋳造機を駆動し、工程精度と安全性を確保。圧延工程では圧延機・巻取機の高ダイナミック応答と同期要件に対応し鋼材品質を向上。また補助系統の改造では、高炉ファンなどの「高消費エネルギー設備」の消費を20〜50%低減できます。// 機種選定にあたっては、冶金の重負荷・過酷環境に適合した強い過負荷容量と高い保護等級の製品を選び、電源系・ブレーキ・通信要件を併せて検討する必要があります。高い制御精度と設備長寿命化の優位性により、インバータは冶金システムの競争力強化の鍵となっています。
ソリューション
With "Precise Speed Control, Energy Conservation & Efficiency Enhancement, and Stable Production" as its core objectives, this solution adopts frequency inverters as the core control equipment for metallurgical systems. It achieves precise motor speed adjustment through vector control, covering the entire production process:
Raw Material Phase: Drives conveying and crushing equipment to dynamically adapt to raw material proportions, saving 15%-30% more energy compared to traditional throttling methods.
Steelmaking Phase: For converters, oxygen lances, and continuous casting machines, it achieves a tilting accuracy of ±0.5° and a lifting speed of 0.1 m/s with high torque and fast response, ensuring molten steel efficiency and slab quality.
Steel Rolling Phase: Uses frequency inverters with 150% overload capacity to meet the frequent start-stop demands of heavy-load equipment. The multi-motor synchronization accuracy reaches ±0.1%, and the strip thickness deviation is ≤0.02 mm.
Auxiliary System Renovation: Transforms kilowatt-level fans and pumps, and combines PID control to achieve 20%-50% energy savings.
Adapted to the metallurgical environment (45℃ high temperature, dusty, and corrosive conditions), the solution selects frequency inverters with IP54 protection rating and high-temperature heat dissipation functions. It is equipped with filters (total harmonic distortion ≤5%) and braking units, and supports industrial communication docking with DCS/PLC systems.
Ultimately, the solution helps enterprises reduce energy consumption, increase product qualification rates by 2%-3%, extend equipment service life by 3-5 years, and promote the intelligent and green transformation of the metallurgical industry.