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How to lift steel plates? Have you ever seen this "magnetic suction" 30-ton extra-large steel plate non-destructive lifting device? (Qianhao Express)

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2025.07.18


In the fields of steel processing, shipbuilding, and logistics warehousing, steel plate lifting operations have always been a major pain point in the production process. Traditional lifting methods rely on steel wire ropes, slings, or vacuum suction cups, which are not only inefficient but also have drawbacks such as scratching the surface of steel plates, high operational risks, and reliance on manual experience. Especially when handling ultra-thin steel plates or heavy components, traditional tools are easily deformed due to uneven force, and may even cause safety accidents. Although electromagnetic lifting devices once improved efficiency, their high power consumption and the risk of demagnetization due to power failure still cause headaches for enterprises.

Magnetic Revolution: Electro-permanent Magnet Technology Solves Industry Challenges

To solve the challenges of traditional lifting, Qianhao Magnetic Electric has launched a new generation of magnetic lifting solutions, covering three product systems: permanent magnet cranes, lifting electromagnets, and electro-permanent magnet lifting devices. Among them, Electro-permanent magnets, as a fusion and upgrade of permanent magnet and electromagnetic technology , have become a disruptive innovation in the field of industrial lifting. Its principle lies in: controlling the magnetic circuit of the permanent magnet through an electromagnetic coil to achieve one-button switching between "magnetization" and "demagnetization." Strong magnetic force can be maintained without continuous power supply in daily use, and electricity is only used briefly when switching states, saving energy and completely eliminating the hidden danger of demagnetization due to power failure. Compared with traditional electromagnets, electro-permanent magnets have a pulling force increased by more than 30%, and there is no risk of temperature rise or deformation, perfectly adapting to the dual needs of safety and efficiency in smart factories.

From Laboratory to Production Line: Qianhao Magnetic Electric's Hard-Core Cases

Steel Plate Logistics Park: "Precision Magic Hand" for Thin Plate Handling


In a large steel plate logistics center, Qianhao electro-permanent magnet lifting devices achieved an industry breakthrough by lifting 32 1.5mm ultra-thin steel plates at once. Through stepless magnetic force adjustment technology, operators can precisely control the adsorption force, avoiding scratches during single-piece lifting, and also enabling batch adsorption and individual release, increasing efficiency by 200%. The intelligent sensors equipped on the device monitor the magnetic force status in real time, ensuring zero missed suction and zero vertical suction.

Hengli Shipyard: "Safety Guardian" for 30-Ton Giant Steel Plates


For the lifting needs of thick ship plates, Qianhao customized a 30-ton electro-permanent magnet beam lifting device. By optimizing the magnetic circuit design and beam gravity distribution, the pulling force index is increased to an industry-leading 45kN/cm². Even in the humid, salt-spray corrosion environment of the dock, the equipment maintains zero-fault operation, greatly reducing the risk of high-altitude operations.

Sany Heavy Industry Lighthouse Factory: "Complete Elimination" of Cutting Waste

In the nationwide first full-coverage application of electro-permanent magnet lifting devices, Qianhao designed an intelligent adsorption system for Sany Heavy Industry's Ningxiang base, which can collect more than 300 types of irregularly shaped parts and scraps generated after cutting at one time. Through 3D visual positioning and magnetic force zone control, it completely solves the pain points of traditional suction cups being prone to missed suction and requiring manual sorting, helping the "lighthouse factory" achieve unmanned material feeding.

Full-Scenario Coverage: Qianhao Magnetic Electric's Four Core Weapons

Whether you are in the automotive manufacturing, rail transit, or energy equipment industries, Qianhao Magnetic Electric's four product matrices can provide customized solutions:

Electro-permanent magnet lifting devices: Adaptable to thin plates, thick plates, and irregularly shaped parts in all scenarios, adjustable magnetic force, safe and worry-free;

Electro-permanent magnet suction cups: Special for machine tool processing, fast clamping, accuracy up to 0.01mm;

Electro-permanent magnet fixtures: Flexible transformation of robot end-of-arm tooling, compatible with multiple specifications of workpieces;

Quick mold change system: Injection molding machine mold change time reduced by 80%, promoting flexible production.

From 30-ton giant components to 1.5mm precision thin plates, from shipyards to smart factories, Qianhao Magnetic Electric has redefined industrial lifting safety standards with "magnetic suction black technology." While traditional tools are still struggling with "bundling and tying," electro-permanent magnet technology has enabled steel plate lifting to enter the intelligent era of "one-button adsorption"—this is the hard-core innovation of Chinese manufacturing.