Projects
1.4409 Material Ultra-Low Ferrite （≤5%） Production Process
1.4409 Breakthrough in the production process of ultra-low ferrite (≤5%) materials lies in providing critical assurance for precisely matching material properties with application scenarios: From a performance perspective, excessively high ferrite content directly compromises the stability of the austenitic matrix, leading to imbalanced mechanical properties— — such as reduced tensile strength, yield strength, and ductility, while simultaneously increasing the risk of intergranular corrosion. This process, by strictly controlling ferrite content, ensures the material maintains excellent corrosion resistance and structural stability under low-temperature, high-pressure, and corrosive conditions (e.g., acidic solutions in chemical processing, seawater environments), preventing failures like cracking and leakage caused by microstructural inhomogeneity. 1.4409 material is extensively used in nuclear power equipment, high-end chemical vessels, marine engineering components, and other fields demanding extreme material reliability. Failures in these applications due to excessive ferrite content could result in substantial economic losses or even safety incidents. This process establishes a foundation for the long-term safe operation of critical equipment through stable ferrite control. The mature application of this process overcomes the technical bottleneck of “high performance being difficult to achieve alongside stability.” It enhances the product consistency and market competitiveness of 1.4409 material, supporting the development of high-end stainless steel materials in strategic fields like precision manufacturing and new energy, while driving technological upgrades across related industrial chains.
Nuclear Fuel Rod Manipulator
- The nuclear fuel rod manipulator is the core automated equipment for fuel loading, unloading, and maintenance in nuclear reactors. It is primarily used in scenarios such as refueling outages, fuel assembly inspections, and fault handling at nuclear power plants: During refueling operations, it precisely manipulates fuel assemblies weighing tens of kilograms within the highly radioactive reactor pressure vessel. Following pre-programmed three-dimensional trajectories, it extracts spent fuel rods and inserts new ones—eliminating the need for personnel to enter high-radiation zones and effectively mitigating radiation exposure risks. The robotic arm’s multi-functional end-effector design (including gripping, rotation, and fine-tuning capabilities) enables fault diagnosis and repair within sealed radiation environments. This eliminates extended downtime caused by manual intervention, ensuring stable reactor operation. Its high precision and reliability form the critical foundation for achieving automated, safe, and efficient nuclear fuel handling operations.
- The mechanical arms for nuclear fuel rods impose exceptionally stringent requirements on steel materials: Exceptional radiation resistance, Outstanding corrosion resistance, A stable balance of high strength and toughness, High-precision machinability and dimensional stability, Low radioactivity characteristics. These five dimensions ensure suitability for demanding operating conditions involving high radiation, high temperature, high pressure, and long-term service.
Non-magnetic stainless steel
Non-magnetic stainless steel features low magnetic permeability, preventing magnetic field interference or magnetization while retaining the corrosion resistance and mechanical properties of stainless steel. It is widely used in scenarios sensitive to magnetic fields or requiring magnetization prevention. Its excellent non-magnetic properties ensure it remains unmagnetized in strong magnetic environments and does not disrupt the magnetic field conditions of surrounding precision instruments, addressing the magnetization susceptibility common in standard stainless steel. Balancing corrosion resistance and strength, it is predominantly an austenitic stainless steel. It withstands corrosion from water, weak acids, and weak alkalis while maintaining adequate tensile strength and ductility to meet processing and usage requirements. Its excellent machinability allows conventional processing such as stamping, welding, and cutting. Certain grades, after special treatment, can also meet the high-precision machining demands of precision components. Its surface is easily polished or passivated. Used for manufacturing enclosures for wireless charging coils in mobile phones, magnetic core shielding covers for headphones, and precision sensor housings to prevent magnetic field interference that could degrade device accuracy. Also employed in producing MRI (Magnetic Resonance Imaging) equipment stages and surgical instruments to prevent tool adhesion to MRI’s strong magnetic fields while avoiding magnetic interference that could compromise imaging quality. Used in load-bearing components of weighing equipment and probe holders for magnetic particle inspection devices, ensuring measurement or inspection accuracy by eliminating interference from the materials’ inherent magnetism. Manufactured into gyroscope housings, transmission components for aviation instruments, and guide rails for semiconductor lithography machines, maintaining component stability in complex environments and preventing magnetic fields from affecting precision motion control.
Nickel-based heat storage components
The core advantages of nickel-based heat storage components lie in their high-temperature resistance, superior heat storage efficiency, and long-term operational stability. They can repeatedly absorb and release heat in harsh high-temperature environments, making them ideal for industrial applications requiring efficient heat recovery and utilization. Exceptional High-Temperature Resistance: Nickel-based alloys inherently withstand temperatures ranging from 800 to 1200°C, far exceeding ordinary stainless steel (maximum tolerance ≤600°C). They resist softening, deformation, or oxidation peeling at elevated temperatures, making them ideal for high-temperature heat storage applications. High-Efficiency Heat Storage and Thermal Conductivity: Nickel-based materials possess high specific heat capacity, enabling rapid absorption and storage of substantial thermal energy. while their thermal conductivity surpasses that of heat storage materials like ceramics, ensuring high heat transfer efficiency and shortening heat storage/release cycles. Strong corrosion and oxidation resistance: Nickel forms a dense oxide film on the material surface, resisting corrosion from sulfur compounds, nitrogen oxides, and other corrosive media in high-temperature flue gases. This reduces performance degradation caused by corrosion and extends service life. Excellent structural stability: Nickel-based alloys exhibit low thermal expansion coefficients and high strength at elevated temperatures. Under repeated heating-cooling cycles, they resist thermal stress-induced cracking or structural damage, ensuring long-term stable heat storage efficiency. Widely applied in industrial furnace heat recovery, waste heat power generation systems, and energy storage within the new energy sector.
