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 From:OFweek New material network

Introduction: The successful research of R6 mooring chain steel is a leap-forward development achieved by China in the field of marine mooring chain steel. This is a major innovation achieved through international cooperation in strong and strong cooperation.

The Orange Science and Technology Daily reported that the scientific research team led by Yin Jiang, a specialist in the company of Xingcheng Special Steel Co., Ltd. of Xingcheng Special Steel Co., Ltd., after three years of unremitting efforts, has overcome many problems from basic process technology to product application. Developed the world's high-grade R6 mooring chain steel, which can meet the needs of safe and green operation of China's new deep-water offshore drilling platform, and provide an important guarantee for the “national heavy weapon”.

“In recent years, ZTE Special Steel has relied on technological innovation to focus on the industry's ‘card neck’ problems and key varieties,” said Yu Yapeng, chairman of CITIC Pacific Special Steel Group.

It is understood that the R6 marine mooring chain steel belongs to the limit performance mooring steel. Currently, only the R6 grade mooring chain standard announced by the DNVGL classification society in July 2018. This standard requires not only high strength and high toughness after continuous heat treatment of the R6 grade, but also the ability to provide hydrogen embrittlement resistance under the applied potential (cathode protection). That is to say, the minutes have excellent resistance to seawater corrosion and application of corrosion and stress corrosion, and it is also necessary to break through the restricted area of ​​hydrogen evolution embrittlement in seawater. Therefore, the development of R6-class extreme marine chain steel has become the common goal of domestic steel mills and even end users, and is also a key link to promote the further development of national marine energy.

Qian Gang, President of CITIC Pacific Special Steel Group, introduced the successful development of R6 mooring chain steel, which is a leap-forward development achieved by China in the field of marine mooring chain steel. This is achieved through strong cooperation and international technical cooperation. A major innovation. On April 19th, the company successfully passed the certification of DNVGL classification society. Xingcheng Special Steel became the first enterprise in the world to obtain the R6 grade mooring chain steel certification certificate, and the first enterprise with mass production capacity.