High-Strength Alloy Metallurgical Equipment Gearboxes

The performance characteristics of Metallurgical Equipment Gearboxes are precisely tailored to the demanding conditions of high temperatures, heavy loads, and dusty environments prevalent in the metallurgical industry. Featuring high load-bearing capacity, they utilise high-strength alloy materials and optimised tooth profiles to withstand the impact loads and sustained high torques encountered in rolling mills, blast furnaces, and similar equipment, thereby preventing tooth surface fractures.

Simultaneously, they exhibit outstanding high-temperature resistance. Utilising high-temperature grease and heat dissipation structures, they operate stably within 80-120°C environments, preventing lubricant degradation. Their wear and corrosion resistance is exceptional: gear surfaces undergo carburising and quenching or nitriding treatments to withstand abrasion from metal debris and dust. Certain components also feature anti-corrosion coatings, adapting to humid scenarios like wet coke quenching.

Furthermore, it delivers high operational stability. Precision machining ensures transmission accuracy while minimising vibration and noise, enabling 24-hour continuous equipment operation. Its maintenance-friendly design facilitates rapid replacement of wear parts, thereby reducing downtime.

 

Main technical parameters:
The primary technical parameters of metallurgical equipment gearboxes are designed to meet the demands of heavy loads, high temperatures, and continuous operation. Core parameters include transmission efficiency, typically reaching 95%-98%. High transmission efficiency reduces energy consumption, enabling adaptation to prolonged full-load operation of metallurgical equipment. Secondly, rated torque ranges predominantly from 1000 to 15000 N·m, with permissible shock torque at 1.5 to 2 times the rated value, enabling resistance to impact loads from rolling mills, blast furnaces, and similar equipment. The gear ratio is configured according to equipment requirements, ranging from 1:5 to 1:100, with precision meeting ISO grades 5-7 to ensure stability in rolling forming and material conveyance; Operating temperatures range from -20°C to 120°C ambient conditions, with certain high-temperature variants withstanding over 150°C, making them suitable for steel-making, sintering, and other high-temperature applications; Protection ratings typically range from IP54 to IP65, offering dust and splash resistance for dusty, humid metallurgical workshop environments; Lubrication primarily employs oil bath or forced circulation systems, ensuring long-term lubrication of gears and bearings.

 

Main application areas:
Metallurgical equipment gearboxes serve as the core component across the entire metallurgical production chain, primarily deployed within ironmaking systems. Examples include the hoisting mechanisms for charge cars in blast furnaces and the carriage drive systems for sintering machines, providing stable Power transmission while adapting to dust-laden environments and fluctuating load conditions. Secondly, within steelmaking operations, they are extensively employed in converter tilting mechanisms, electric furnace electrode lifting systems, and continuous casting machine draw-straighteners. These units must withstand high-temperature environments and frequent impact loads to ensure the continuity of molten steel pouring and forming processes. Furthermore, within rolling mills, they serve as core transmission components in hot rolling mills, cold rolling mills, and levellers. They transmit high torque while maintaining transmission precision, directly influencing the uniformity of thickness and surface quality in steel rolling. Additionally, they are employed in metallurgical auxiliary equipment, such as jaw crushers for raw material fragmentation and belt Conveyors for material transportation. These applications demand heavy-duty, continuous operation, thereby supporting the efficient functioning of the entire metallurgical production process.

 

Important Tips:
When operating metallurgical equipment gearboxes, the following key points require particular attention: Daily maintenance must involve selecting suitable high-temperature, wear-resistant lubricants appropriate for operating conditions. Regular checks of oil levels and quality are essential to prevent gear wear or bearing failure due to lubrication failure. During operation, real-time monitoring of vibration and temperature data is imperative. Should abnormal fluctuations occur, immediate shutdown for investigation is required to prevent faults such as gear tooth adhesion or breakage caused by impact loads or excessive temperatures. During installation, ensure precise shaft alignment to prevent additional loads from misalignment. When servicing, thoroughly clean internal contaminants, particularly metallurgical workshop dust and metal debris, to prevent accelerated component wear. Never operate beyond rated torque. Maintain a stock of wear parts to minimise downtime, ensuring continuous operation aligned with metallurgical production requirements.