The reporter learned from JYXC Special Steel Group on the 21st that the company's mooring chain steel expert Yin Jiang led a scientific research team. After 3 years of unremitting efforts, it has overcome many problems from basic materials to process technology to product applications, and took the lead in developing The world's highest-level R6 mooring chain steel can meet the requirements of China's new medium and deep water offshore drilling platforms for safe and green operations, and provide important guarantees for "the heavyweight of the country".
"In recent years, JYXC special steel relies on scientific and technological innovation to focus on key problems in the industry's" neck neck "and key varieties." Said Yu Yapeng, chairman of JYXC special steel group.
The reporter learned that R6 marine mooring chain belongs to the extreme performance mooring chain. At present, there is only the R6 grade mooring chain standard first announced by DNVGL Classification Society in July 2018. This standard not only requires high strength and toughness after continuous integral heat treatment of the R6 grade chain, but also needs to provide resistance to hydrogen embrittlement under applied potential (cathode protection) conditions. In other words, not only must have excellent seawater corrosion and stress corrosion resistance, but also need to break through the restricted area of hydrogen evolution embrittlement in seawater agreed at home and abroad. Therefore, the development of R6 level extreme marine chain steel has become the common goal of domestic steel mills and even end users, and it is also a key link to promote the further development of national marine energy.
Mr. Qian, President of JYXC Special Steel Group, introduced that the successful development of R6 mooring chain steel is a leapfrog development in the field of marine mooring chain steel in China. This is achieved through strong and powerful international cooperation A major innovation. On April 19th, it successfully passed the certification of DNVGL Classification Society, and Xingcheng Special Steel became the first company in the world to obtain the R6 mooring chain steel certification and the first company with mass production capacity.