Technological Innovation | Wolong Empowers Quality and Efficiency Upgrades for Metallurgical Strip Processing Lines
Technological Innovation | Wolong Empowers Quality and Efficiency Upgrades for Metallurgical Strip Processing Lines
Strip refers to wide flat-rolled metal sheets with a thickness of up to 3mm, produced and delivered in coil form, serving as a fundamental material for continuous and high-speed production in the metallurgical industry. Throughout the entire process of uncoiling, high-speed operation, and precise recoiling, these strips are highly susceptible to quality issues such as tensile fracture, running deviation, and surface wrinkling. The constant tension control system stands as the core equipment ensuring stable production line operation, effectively serving as the "nervous system" of metallurgical strip processing lines.
As the primary energy-consuming equipment on strip production lines, the motor in the constant tension control system accounts for 94% of the equipment's lifecycle costs in energy consumption, making it a critical breakthrough point for energy-saving retrofits and efficiency upgrades in metallurgical plants. Currently, traditional industry solutions commonly employ a combination architecture of "three-phase asynchronous motor + gearbox + imported frequency converter," which presents numerous pain points, creating an urgent need for cost reduction and efficiency improvement.
Addressing Industry Pain Points with Precision-Matched Customer Retrofit Needs
While serving professional metallurgical equipment integration suppliers, Wolong gained deep insight into the equipment technological innovation and pain points of their steel mill cold-rolling strip production lines. The traditional constant tension drive system on these lines has long been plagued by a series of production challenges, including low transmission efficiency, high energy consumption, frequent gearbox wear, high operational noise, susceptibility to lubricant leakage, and large equipment footprint—all severely constraining quality improvement, cost reduction, and green upgrades. To thoroughly resolve these industry pain points, the customer ultimately selected Wolong's customized low-speed permanent magnet direct-drive motors and drive control systems to technologically overhaul the original traditional drive system, enabling new productive forces to enhance system energy efficiency and output value, while meeting new equipment requirements for increased production, energy savings, and environmental protection.
Customized Exclusive Solution Adapted to Complex Metallurgical Operating Conditions
Wolong's customized drive control solution comprises high-precision high-power low-speed permanent magnet motors, cooling systems, and multi-drive common DC microgrid drive control electrical systems. With IP55 protection rating, it adapts to harsh on-site conditions, supports S1 continuous duty cycle, and precisely matches the core process requirements of bidirectional rotation, low-speed high-torque, and stable constant-tension operation on the production line.
This retrofit adheres to the principles of "high efficiency and quality improvement, cost reduction and efficiency enhancement, and minimal modification," maximizing retention of existing core process equipment while focusing technical upgrades solely on the drive unit control systems, thereby simplifying equipment commissioning cycles. During project implementation, brand-new pay-off/recoil and tension roller permanent magnet drive systems replaced the original multi-drive asynchronous motors, gearboxes, imported frequency converter control cabinets, and other traditional components, fundamentally reducing power losses and maintenance costs associated with traditional mechanical transmission while effectively increasing daily production capacity.
Leading Specifications Empower Dual Breakthroughs in Quality and Efficiency
Leveraging Wolong's high-end drive control technology, the upgraded production line's core performance indicators have achieved comprehensive advancement, with all parameters reaching industry-leading levels:
· Excellent Control Precision: Equipped with PG vector control technology, speed control precision reaches ±0.25%, enabling precise tension management in strip production and eliminating deviation and wrinkling issues;
· Significantly Enhanced Operational Energy Efficiency: Motor power covers the full range from 30kW to 500kW, with total drive system comprehensive efficiency ≥95%, overall energy savings up to 25%, and daily production output increased by over 20%;
· Extremely Simplified Equipment Maintenance: By eliminating wear-prone mechanical components such as gearboxes, annual equipment maintenance frequency is reduced to less than once, completely eliminating pollution caused by lubricant leakage;
· Stable and Low-Noise Operation: Equipment operational noise ≤85dB(A), compliant with green production standards; variable frequency electrical cabinets equipped with multiple safety protection mechanisms, with mean time between failures exceeding 50,000 hours.
Upon completion of the upgrade, the production line's operational stability, processing precision, and production speed have all been comprehensively enhanced, effectively improving both production capacity and finished product qualification rates—truly achieving integrated upgrades in quality, efficiency, and cost reduction.
Full-Cycle Attentive Services Ensuring Long-Term Project Operation
At the service level, Wolong has established a standardized, full-process service system to fully guarantee project implementation and subsequent long-term stable operation. Within 7 days of contract effectiveness, customers receive complete technical documentation and equipment qualification certification; during equipment installation and commissioning, free specialized technical guidance is provided throughout to ensure smooth production launch. Meanwhile, a rapid after-sales response mechanism has been established, offering 24-hour quick response and 48-hour on-site engineer dispatch for equipment manufacturing quality issues, comprehensively eliminating customer maintenance concerns.
Green Carbon Reduction Implementation Driving Metallurgical Industry Upgrades
This project replaces traditional low-efficiency drive systems with high-efficiency permanent magnet direct-drive solutions, not only fundamentally reducing electrical energy losses but also completely resolving environmental issues associated with traditional equipment such as gearbox oil contamination and excessive operational noise, while optimizing workshop production environments—delivering remarkably significant green carbon reduction outcomes. Calculations show that the retrofitted production line can save up to 1.7 million kWh of electricity annually, effectively reducing overall enterprise energy consumption and optimizing per-ton steel energy consumption indicators, helping the metallurgical industry build efficient, low-carbon, and green modern production lines, and injecting strong momentum into the intelligent and green transformation and upgrading of traditional metallurgical industries.
