Recently, two complete sets of quenching cranes with capacities of 400 tons and 150 tons, independently developed and manufactured by Wei Hua, were officially delivered to customers and simultaneously put into use in the heat treatment production line.
Among them, the 400-ton-class equipment is currently the largest quenching-specific crane in China by lifting capacity. The two sets of equipment will jointly undertake the entire process of quenching and lifting heavy-duty workpieces, marking a crucial step for Weihua in advancing specialized metallurgical lifting equipment toward comprehensive solutions for ultra-large tonnage applications.
Weihua 400-ton quenching crane
Weihua 150-ton quenching crane
Complete thermal protection design withstands the sustained high temperatures of the quenching station
To address the prolonged thermal radiation erosion in the furnace area, Wei Hua adopted a systematic approach by uniformly equipping dual-unit machines with high-temperature-resistant specialty cables, embedding a constant-temperature electrical compartment in the main girder, and installing a double-layer insulated cab. This design effectively blocks heat conduction to the core electrical control unit.
Under working conditions, the heat generated by synchronous operation during travel accumulates. The multi-layer thermal insulation design effectively prevents typical high-temperature faults such as cable aging and signal instability, ensuring uninterrupted continuous operation of the equipment.
Dual-hook coordination + new-generation PLC, balancing fast and slow rhythms with lifting precision
The quenching process is highly sensitive to the timing of immersion, requiring dynamic matching of operating speed for both large and small loads under a dual-hook configuration. The unit is equipped with the latest-generation PLC centralized control system, and the main hoisting mechanism employs stator voltage regulation and speed control technology. This enables precise coordination of the acceleration and deceleration curves for the main and auxiliary hooks, effortlessly handling complex working conditions involving frequent starts and stops, variable loads, and high-speed lifting and lowering. It achieves rapid lifting under heavy loads and stable movement under light loads, effectively avoiding uneven quenching structures and collision damage caused by workpiece oscillation.
From breaking the single-machine tonnage limit to the collaborative deployment of dual-hook complete sets, this quenching lifting equipment system fully demonstrates Weihua's long-term technical expertise in the field of metallurgical special lifting.
Targeting the high-end heat treatment and heavy metallurgy sectors, Weihua will continue refining specialized lifting solutions to meet the core equipment demands of industrial transformation and upgrading through independent innovation.
