Abstract: This research explores the energy-saving technologies and solutions for hot-rolling descaling systems. It describes the current energy-consumption status and operating conditions of the system. Through an in-depth analysis of the operating conditions of the hot-rolling descaling system, it is divided into four stages: energy storage and pressure increase, minimum-flow protection, speed-reduction for energy-saving, and production resumption. The applications of variable-frequency speed-regulation technology, hydraulic coupling speed-regulation technology, optimized accumulator configuration, and intelligent control systems are briefly discussed. Based on the working-condition characteristics of the descaling system and combined with the significant advantages of multi-technology collaborative applications in energy-saving, a comprehensive energy-saving solution is proposed.

Key words: hot rolling, high-pressure descaling, energy-saving, variable-frequency speed-regulation