On March 12, 2019, Jin Haiming, Deputy Secretary-General of the China Nonferrous Metal Processing Industry Association (hereinafter referred to as the Processing Association) and his group went to Shaanxi Sirui Advanced Materials Co., Ltd. (hereinafter referred to as Shaanxi Sirui) for investigation. Chairman Wang Wenbin, General Manager Wu Xuhong, Deputy General Manager Liang Jianbin, and Deputy General Manager Zhang Hang warmly received the Association and the delegation. The processing association and the senior leaders of Shaanxi Sirui first visited the production site of the factory, and then had an exchange and discussion.

     Shaanxi Sirui Advanced Materials Co., Ltd. was established in 1995. The parent company is located in Xi 'an High-tech Industrial Development Zone, covering an area of nearly 50,000 square meters, with a construction area of about 40,000 square meters. It has two wholly owned subsidiaries. Subsidiary of Xi 'an Advanced Copper Alloy Technology Co., LTD. The main production of various kinds of copper alloy materials, has a vacuum smelting, vacuum melting, hot extrusion, drawing, forging, precision casting, special copper alloy vacuum heat treatment, precision machining, such as production lines, have all kinds of research and development, manufacturing and more than 1000 sets testing equipment instrument. Our subsidiary, Shaanxi Sirui Precision Casting and Forging Co., LTD., mainly forges and precision casts various advanced copper alloy materials and parts.

     The company focuses on the research and development and manufacturing of CuCr electric vacuum contact materials (won the single champion product published by the Ministry of Industry and Information Technology), CuW series contact materials and composite contact materials, high conductivity and high strength CuCrZr series alloy materials, CuFe series alloy materials and other special copper alloy materials. The company's goal is to become a metal matrix composite new material market segments of several invisible champion!

     The contact materials of CuCr series and CuW series are mainly produced by powder metallurgy, vacuum melting and infiltration, vacuum casting, vacuum arc melting and other production lines. Shaanxi Sirui is the world's leading supplier of CuCr alloy electric vacuum contact materials used in the field of electric power, providing more than 8 million pieces of various materials and different specifications to global customers every year.

     CuCrZr alloy material is produced by vacuum melting and non-vacuum melting production lines. The main products are cu-Cr-ZR alloy rotors for high power traction motors in rail transit, large-size CuCrZr alloy casting billet with high strength and high conductivity, SF6 circuit breaker CuCr/CuCrZr alloy conductors, etc. Shaanxi Sirui is the world's leading supplier of copper chromium zirconium alloy rotor materials for high power traction motors in rail transit. In terms of research and development and industrialization of high-strength and high-conductivity CuCrZr alloy materials, Shaanxi Si Rui is the main force of professional research and development and manufacturing of a new generation of high-conductivity and high-strength cu-based alloy materials. The company successfully industrialized the non-vacuum melting continuous casting large-size casting technology of CuCrZr alloy in 2015. CuCrZr material (C18150) currently has a production capacity of 8,000-10,000 tons/year and is building a manufacturing capacity of 20,000 tons/year to meet the growing market demand of the new generation of consumer electronics.

     In the development of high purity chromium powder, Shaanxi Si Rui has been developing and manufacturing CuCr contacts and CuCrZr materials for more than 20 years. In order to ensure a high quality chromium metal raw materials, the use of meet CuCr contact high quality requirements for high purity gas low chromium powder, with high strength and high conductivity CuCrZr alloy production of high purity chromium billet high quality request, The metal Cr and Cr powder have been studied deeply, and the special process of low gas content and low acid insoluble ceramic phase vacuum grade high purity Cr powder has been developed and industrialized. Special production lines for precision selection, atmosphere protection, low temperature crushing, air flow mill and vacuum thermal carbon reduction of chromium powder have been built. This kind of high purity chromium powder is widely used in electrical contact materials, PVD sputtering target materials, superalloy smelting and other industries, to serve the global high-end superalloy, special steel, 3D printing and other research and develop manufacturing needs.

     In addition, Shaanxi Sirui also has a high temperature alloy turbine disc precision processing production line, developed the medical CT equipment X-ray tube copper alloy materials and vacuum welding technology.

     The products of the company mainly serve the world's top 500 companies such as Siemens Power, ABB, Schneider, Toshiba, Eaton, GE Transportation, France Alstom, CRRC, State Grid, Siemens Medical and so on.

     After listening to the product introduction and on-site visits by Chairman Wang Wenbin and General Manager Wu Xuhong, Jin Haiming pointed out that Shaanxi Sirui has become the world's number one in copper-chromium contact materials, and the technology of non-vacuum fusion-casting copper-chromium-zirconium materials has reached the domestic leading level. The production technology of high-purity chromium powder has reached the world's leading position, and the development of other new copper alloy products is constantly catching up with the world's forefront. Many products are invisible champion products in the copper processing segment. After on-site investigation and listening to the introduction, it has fully demonstrated that Shaanxi Sirui has been focusing on the innovation ability, product quality improvement and brand cultivation of subdivided product fields for many years, and its international reputation and competitiveness have been steadily improved. It is hoped that Shaanxi Sirui will continue to stimulate technological innovation as the driving force for development, turn technical difficulties into stepping stones for enterprise development, and contribute more to China's technological leadership and high-quality development.

(Wu Qiong, Copper Department, China Non-Ferrous Metal Processing Industry Association)