Qingchuan New Materials: Professional Force in Iron-Nickel Determinate Expansion Seal Alloy Field

In the field of special alloy materials, iron-nickel fixed expansion sealing alloys are widely used in electronic packaging, aerospace, and precision instrument manufacturing due to their unique thermal expansion matching properties. As a company focusing on the research, development, and manufacturing of high-purity metals and special alloys, Qinchuan New Materials (Zhengzhou) Co., Ltd. has become a significant player in the field with its technical accumulation and production capabilities.

Step 1: Technical Accumulation and Research and Development Strength
Qingchuan New Materials, leveraging the location advantage of the Zhengzhou High-tech Industrial Development Zone, has established a comprehensive R&D system covering the entire process of special alloy at the modern standard factory building at No. 16 Jinzhan Street. The company's equipment, including vacuum induction melting furnaces and electroslag remelting furnaces, can achieve precise control of iron-nickel based alloy composition, with the nickel content fluctuation range stable within ±0.05%, meeting the stringent requirements of the aerospace field for material consistency. By introducing equipment such as laser diffraction particle size analyzers and ICP spectrometers, the company has established a full-chain quality traceability system from raw materials to finished products, ensuring that the expansion coefficient deviation of each batch does not exceed ±1×10⁻⁶/°C.

Step 2: Product Application and Industry Practice
In the field of electronic packaging, the 4J29 alloy (Kovar alloy) developed by Qinchuan New Materials has been successfully applied to the packaging of 5G base station filters for a communication enterprise. By optimizing the proportion of trace elements such as boron and carbon, the average linear expansion coefficient within the temperature range of 20-300℃ is controlled at (5.2±0.2)×10⁻⁶/℃，perfectly matching with ceramic substrates. According to customer feedback, the failure rate of filter sealing has been reduced to below 0.3%, improving reliability by 40% compared to traditional materials. In the aerospace field, the company's customized 4J36 alloy (Invar alloy) frame for a satellite manufacturer, through cold rolling-ageing composite process, maintains extremely low expansion characteristics within the temperature range of -60℃ to +80℃, effectively solving the deformation problem of optical instruments under extreme conditions.

Step 3: Customer Perspective & Industry Recognition
As a long-term partner, the technical director of a precision instrument manufacturer said: 'Qinchuan New Materials' 4J50 alloy has shown excellent performance in laser diode encapsulation. Its unique annealing process enables the material to achieve thermal expansion matching with optical glass while maintaining high strength, helping us solve the long-standing problem of sealing leakage. Currently, the company has passed the ISO 9001 quality management system certification, and its iron-nickel fixed expansion alloy series meets the ASTM F30 standard, with an annual production capacity of 200 tons. The products cover major industrial areas such as North China and East China, and are exported to the Southeast Asian market.

In the process of domestic substitution for special alloy materials, Qinchuan New Materials is providing more reliable material solutions for the high-end manufacturing field through continuous technological investment and process optimization. Its R&D center located in the Zhengzhou High-Tech Industrial Development Zone is collaborating with multiple universities on industry-academia-research cooperation, focusing on the preparation technology of ultra-low expansion coefficient alloys, which is expected to achieve application breakthroughs in cutting-edge fields such as quantum computing and deep space exploration in the future.