金川集团成功制备高性能K438高温合金粉末

Core Insights - Jinchuan Group Co., Ltd. has successfully developed high-performance K438 high-temperature alloy powder by overcoming key technical challenges related to rare earth element loss, segregation, and defect-free casting [2][6] - The K438 alloy is a nickel-based precipitation-strengthened high-temperature alloy, known for its excellent high-temperature strength, thermal corrosion resistance, and oxidation resistance, making it suitable for components in environments above 900°C, such as turbine blades and gas turbine hot-end parts [2][6] - The alloy powder can be utilized in additive manufacturing processes like laser selective melting and electron beam melting, allowing for the integrated production of complex structural parts with higher precision and material utilization compared to traditional casting methods [2][6] Technical Development - Upon receiving a special order from a client, the Nickel-Cobalt Metal Materials Research Institute quickly formed a research team to optimize alloy composition, control gas content, and improve powder particle size distribution, flowability, and bulk density [2][6] - The team employed plasma rotating electrode technology to produce high sphericity, low impurity, and high-density high-temperature alloy powder [2][6] - The product has an average particle size of 43μm to 45μm and a bulk density of 4.9g/cm³, with a smooth powder surface and no satellite or hollow particles, achieving advanced industry performance [2][6] Future Directions - The Nickel-Cobalt Metal Materials Research Institute now possesses both plasma rotating electrode and gas atomization production capabilities, enabling the development and mass production of various nickel-cobalt-based high-temperature alloy powders [3][7] - Jinchuan Group will continue to focus on market demand, adhering to the philosophy of "promoting production through research and driving research through production," accelerating technological innovation in high-performance alloy powders and key materials for additive manufacturing [3][7] - The company aims to contribute to the high-quality development of the non-ferrous metal new materials industry during the 14th Five-Year Plan period [3][7]