Angang becomes the only supplier of 15MnNi nuclear power steel

On November 27th, China Nuclear Corporation Fuqing Nuclear Power Unit 5, the world's first pile of China's first independently designed and built third-generation nuclear power unit "Hualong 1", was successfully connected to the grid for the first time. Angang supplied nearly 1500 tons for the project, of which 75 tons of nuclear first-class key equipment material 15MnNi was used in reactor pressure vessel support components.

Reactor pressure vessel is the core equipment of nuclear power unit, which is a safe Barrier to ensure the non-leakage of radioactive material. The supporting steel for reactor pressure vessel is mainly used to support the whole reactor sphere and to prevent the sphere from capsizing.

Since the birth of the "Hualong No.1" project, the production, marketing and research team of nuclear power steel composed of the medium and heavy Plate Division of Angang and the Iron and Steel Research Institute of Angang Group has paid close attention to the progress of the project. actively keep in touch with downstream design institutes and nuclear power equipment manufacturing enterprises. Through the comprehensive comparison of the owners, Angang has become the first medium and heavy plate enterprise to supply the project, and it is also the only supplier of 15MnNi nuclear power steel for the project. Combined with the technical characteristics of the unit, the production, marketing and research team of Angang Nuclear Power Plant redesigned the product composition, adjusted the production process, and strictly controlled the steel plate yield strength, tensile strength, impact performance, surface hardness and other indexes. give full play to the technical advantages of on-site equipment and personnel to complete the task of ensuring supply with high quality in accordance with the project construction cycle.

According to on-site experts, the successful grid connection of the first pile of "Hualong 1" in the world marks that China has broken the monopoly of foreign nuclear power technology and officially entered the ranks of advanced countries in nuclear power technology. it is of great significance for China to realize the leap from a nuclear power power to a nuclear power power. at the same time, it has further enhanced the confidence of countries along the "Belt and Road Initiative" route in "Hualong 1".