Introduction

Iron-nickel fixed-expansion sealing alloys, as a special type of metal material, play an irreplaceable role in aerospace, electronic packaging, optical instruments, and other fields due to their unique thermal expansion coefficients and good matching with non-metallic materials such as glass and ceramics. Qingchuan New Materials (Zhengzhou) Co., Ltd., as a professional enterprise in this field, is committed to providing customers with customized high-performance iron-nickel fixed-expansion sealing alloy solutions through its profound technical accumulation and advanced production equipment.

Overview of Corporate Technical Strength

Qingchuan New Materials (Zhengzhou) Co., Ltd. is located in the High-Tech Industrial Development Zone of Zhengzhou City, with modern standard factories and first-class production facilities. The company focuses on the research and manufacturing of high purity metals, special alloys, and related products, especially in the field of iron-nickel fixed expansion sealing alloys, where it has accumulated rich technical experience. The company is equipped with advanced special alloy and high purity material production lines and precision processing equipment, as well as comprehensive analytical and testing capabilities, ensuring that every batch of products meets the industry's high standards.

Technology Layout and R&D Innovation

Qingchuan New Materials focuses on precise material composition control and process optimization in the research and development of iron-nickel fixed expansion sealing alloys. By adjusting the nickel content, the company can produce alloy products with high thermal expansion coefficients matching glass, ceramics, and other materials within a specific temperature range, such as the typical grades 4J42, 4J50, etc. These alloys not only have excellent thermal expansion matching properties but also possess good oxidation resistance, corrosion resistance, and processing performance, meeting stringent requirements for sealing materials in various fields.

During the research and development process, Qinchuan New Materials employs advanced melting technologies such as vacuum induction melting (VIM) + electroslag remelting (ESR) / vacuum arc remelting (VAR) combined process, effectively controlling the content of gases and inclusions, ensuring the purity and uniformity of the master alloy. At the same time, the company also focuses on the optimization of heat treatment processes, controlling the size and distribution of γ' phase through precise heat treatment systems, improving the alloy's endurance strength and creep resistance.

Application Experience and Practice Cases

Qinchuan New Materials' iron-nickel fixed expansion sealing alloy finds wide application in various fields with rich experience accumulated. In the aerospace field, the company's alloy products are used to manufacture key components such as turbine work blades, guides, and cast-in-place turbines, effectively solving the issues of sealing and durability of components under high-temperature environments. In the field of electronic packaging, the alloys of Qinchuan New Materials are widely used in the encapsulation of high-end power devices and RF devices due to their precise thermal expansion matching with glass substrates, ensuring the long-term stable operation of devices under high-temperature and high-humidity conditions.

Taking the manufacturing of an aviation engine turbine blade as an example, Qingchuan New Materials provides customized K418 nickel-based precipitation strengthened casting high temperature alloy material. This material exhibits excellent tensile strength and creep resistance at temperatures ranging from 750 to 1000°C, successfully replacing imported materials, reducing costs, and shortening delivery cycles. At the same time, precise heat treatment process control ensures that the blades maintain excellent plasticity and fatigue properties even after long-term aging.

Conclusion

Qinchuan New Materials (Zhengzhou) Co., Ltd. has achieved remarkable success in the field of iron-nickel fixed expansion sealing alloys, thanks to its profound technical accumulation, advanced production equipment, and strict quality control system. The company not only provides high-performance alloy materials to customers but also offers a full-process solution from mold design, shell making, casting to post-processing, helping customers solve technical difficulties in research and development trials. In the future, Qingchuan New Materials will continue to uphold the corporate spirit of innovation, pragmatism, and efficiency, providing high-quality sealing materials and technical support to more fields.