(Yueyang, August 13, 2025) Amidst the global wave of transformation in manufacturing toward intelligence and flexibility, Hunan Qianhao Magnetic Electric Co., Ltd. has leveraged its independently developed electro-permanent magnet technology to create a fully integrated, intelligent, and flexible material-handling production line for industry leaders such as Sany Heavy Industry and Taiheavy Group—landmark factories that are setting new benchmarks. This innovation is driving a transformative leap in traditional heavy-industry production models.

Disruptive technology reshapes the entire workflow of the material preparation line.

As a core component of intelligent manufacturing, the laser material handling line directly influences overall production capacity with its efficiency and stability. Specifically tailored for laser cutting applications, Qianhao Magnetic Electric has innovatively developed an integrated automation solution featuring a "smart conveyor system + laser cutting machine + intelligent sorting system." This solution leverages electro-permanent magnet technology to enable unmanned operations across all stages—loading, conveying, and sorting—while relying on an advanced intelligent control system to seamlessly manage the entire lifecycle, from production planning to final product delivery.

In Sany Heavy Industry's smart factory, the Qianhao **fully-coverage electro-permanent lifting device** demonstrates exceptional efficiency in "whole-plate handling." Featuring a clustered arrangement of electro-permanent magnets, this lifting device enables seamless loading of entire steel plates before laser cutting and unloading them afterward—tasks that traditionally take an hour can now be completed in just 2 minutes. As a result, the utilization rate of the laser cutting machine is boosted by 40%. Moreover, the device ensures uniform magnetic coverage across the steel plate surface, effectively preventing localized stress concentrations and completely eliminating the risk of plate scratches caused by hook-based handling. Additionally, its intelligent separation technology allows for precise single-sheet adsorption of thin steel plates ranging from 2 to 30 mm thick, providing "zero-damage" assurance for high-end plate processing applications.

Precision Collaboration in Intelligent Conveying and Sorting

In the handling process, Qianhao’s **truss-end gripper with electro-permanent magnets** is deeply integrated with the intelligent conveyor line, serving as the "nerve endings" of automated logistics. Integrated at the end effector of the truss robot, this gripper utilizes instantaneous magnetization and demagnetization control to precisely pick up steel plates of various sizes and achieve millimeter-level positioning. Paired with laser-based positioning and an AI-powered path-planning system, it enables dynamic material scheduling across production lines. At Taiyuan Heavy Machinery’s heavy equipment manufacturing workshop, this system has boosted steel plate handling efficiency by up to three times compared to traditional manual operations—while maintaining positioning accuracy within an impressive ±0.5mm tolerance.

The "last mile" of the sorting process has been revolutionized by the **electric permanent-magnet dot-array robotic gripper with suction cups**. Featuring a modular design, this gripper leverages independently controlled magnetic units to precisely pick up and sort fragmented workpieces after cutting. In Taiyuan Heavy Machinery's intelligent sorting system, this gripper, combined with machine vision recognition technology, can identify, grasp, and precisely place parts of multiple specifications into designated zones within just 10 seconds. As a result, sorting efficiency is improved by 80% compared to traditional manual methods, while also eliminating the issue of vacuum suction cups failing to adhere effectively to porous板材.

A Revolutionary Breakthrough in Welding and Fixing

In the welding process, Qianhao's **electrically permanent magnet fixture**, designed for welding and fixing, has completely revolutionized the traditional mechanical clamping method. By instantly switching between electromagnetic and permanent magnetic modes, this fixture can securely hold or release workpieces in as little as 0.6 seconds. Moreover, once power is cut off, the magnetic force remains permanently intact, eliminating the risk of workpiece displacement caused by mechanical failures—something commonly seen with conventional fixtures. Additionally, its advanced multi-surface independent control technology enables simultaneous fixation of multiple welding points on complex structural components, reducing the cycle time of a certain heavy industry company's welding operations by 30% while boosting weld quality consistency to an impressive 99.8%.

1. The intelligent control system achieves "brain-level" management and control.

Qianhao's independently developed intelligent control system acts as the "super brain" of the production line. Leveraging digital twin technology, it builds a virtual factory that enables real-time monitoring of critical metrics such as laser cutter operating status, material inventory levels, and equipment energy consumption. The system can automatically generate cutting task schedules based on order priorities, dynamically adjust equipment parameters, and deliver millisecond-level command responses through edge computing. In practice at Taiheavy Group, this system has reduced order delivery cycles by 25% and boosted raw material utilization to over 95%, truly achieving seamless integration between planning and actual production—making "planning equals production" a reality.

Technological advantages lead industry transformation

Qianhao Electric's core competitive advantage in permanent magnet technology is reflected across three key dimensions:

**Ultimate Safety**—The non-magnetic property even in power-off conditions ensures zero risk of workpiece drop during unexpected situations, achieving a zero-accident rate in Wugang’s 20-ton steel coil handling scenario.

**Super Energy-Efficient** — It consumes power only during the magnetization and demagnetization processes, achieving 95% energy savings compared to traditional electromagnetic lifting devices, with each unit saving over 100,000 yuan in electricity costs annually.

**Flexible Adaptation** – Supports mixed-line production of materials in multiple specifications. By quickly switching magnetic modules, it can easily meet the diverse needs of different products, helping Sany Heavy Industry achieve efficient delivery of small-batch, multi-variety orders.

Conclusion: Qianhao Magnetic Electric Sets a New Paradigm for Smart Manufacturing. As an "invisible champion" in the field of electro-permanent magnet technology, Qianhao Magnetic Electric delivers a comprehensive "product + system + service" solution, empowering industry leaders like Sany Heavy Industry and Taihe Group with end-to-end support—from hardware to software. Their electro-permanent lifting devices, end effectors, suction cups, and fixtures seamlessly integrate with intelligent control systems, not only breaking through efficiency bottlenecks in traditional material-handling production lines but also offering a groundbreaking Chinese solution for the global heavy industry's transformation and upgrade. Looking ahead, Qianhao Magnetic Electric will continue to deepen its expertise in cutting-edge areas such as high-temperature resistance and ultra-deep magnetic penetration, collaborating closely with more manufacturing partners to jointly write a new chapter in the era of smart factories.

About Qianhao Magnetic Electric

Hunan Qianhao Magnetic Electric Co., Ltd. was established in 2002 and has become a leading enterprise in China specializing in the research, development, and application of permanent magnet technology. Its product portfolio includes a comprehensive range of magnetic equipment such as permanent magnet lifting devices, clamps, and suction cups, widely used in industries like metallurgy, automotive, and shipbuilding. The company holds over 200 patented technologies, and its permanent magnet lifting devices have been listed on Hunan Province's First (Set) Major Technical Equipment Catalogue. The company's strong technical capabilities have earned deep recognition from industry leaders including Wuhan Iron & Steel, Baosteel, Tianjin Pipe Corporation, Sany Heavy Industry, CRRC, and Hengli Shipbuilding.

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