The world's largest high-end intelligent marine electric ship plate is now "New Steel Made".

Recently, the groundbreaking ceremony was held for the world's largest and China's first domestically produced 10,000-ton pure electric high-end intelligent ocean vessel—a pure electric open-top container ship, officially marking the start of its construction phase. A source of pride for Xingang Steel is that this intelligent container ship will be entirely constructed using high-end ship plates from Xingang Steel.

It is reported that the steel plates used for the construction of this 10,000-ton electric high-end intelligent ocean-going vessel total tons. Among them, the first batch of tons of ship plate orders was completed and delivered on the day of the month, the second batch of tons of ship plates is currently in production, and the third batch of tons of ship plate orders has been signed, with the products being scheduled for production.

The construction of this 10,000-ton electric high-end intelligent ocean-going vessel marks the entry of China's coastal container ship operations into a zero-emission, fully electric era, which is of milestone significance for promoting high-quality green and zero-carbon development in China's shipping industry. The vessel type features an intelligent integrated platform, intelligent engine room, and autonomous navigation in open waters, with functions including real-time ship-around perspective, all-weather visual perception for navigation, route planning, unmanned driving, autonomous collision avoidance, and mode switching. It integrates green, efficient, and intelligent technologies. The first ship is scheduled to be put into use in the month of the year. (Deng Hao, Cheng Yunxi, Zou Lijing, Luo Xi)

Wugang series of container steel plates realize batch supply

On the specified date, Hebei Iron and Steel Group Wugang Company successfully delivered large-thickness, high-tech-difficulty carbon-manganese-vanadium series container steel plates to a key client. All performance indicators reached a leading level domestically.

The product has achieved batch production and customer supply for the first time in Wugang, which is of great significance for consolidating and expanding the variety series of Wugang Company and leading the high-quality development of the wide and heavy plate industry.

In the research and production process, facing numerous challenges such as large steel plate thickness and high technical requirements, Wuyang Steel attaches great importance to this, strengthening the execution of processes and technological innovation in various links. Addressing the difficulties posed by the contract's high demands on steel plate tensile properties, impact properties, and post-weld simulation performance, the high-end high-efficiency product research team at Wuyang Steel has consistently adhered to a customer-centric approach. They initially implemented a series of gradient tests covering all key processes, analyzed the test data over multiple days, meticulously determined the optimal process plan matching the production site, and ensured strict adherence to the process plan on the production line, ultimately guaranteeing excellent performance in all the product's indicators. (Dong Jie, Lin Na, Li Yangbing)

Daye special steel landing gear uses steel to support aviation dream

Become the only qualified supplier of bars for amphibious aircraft landing gear

The experimental report on the establishment of specifications and design allowable values for steel bars and forgings used in aviation landing gears by Daye Special Steel has received formal approval from the Aircraft Airworthiness Certification Department of the Civil Aviation Administration of China, making it the only qualified supplier of steel bars for landing gears of large firefighting/water rescue amphibious aircraft. On a certain date, at the special seminar on the industrialization and technological development of steel for aviation landing gears held in Huangshi, Hubei Province, Zhou Yibing, Chief Process Engineer of AVIC Aircraft Landing Gear Co., Ltd., announced this news, and the venue was filled with applause.

Academician of the Chinese Academy of Engineering, Liu Jie, and Liu Zhengdong attended the meeting and delivered speeches. Qian Gang, Deputy Secretary of the Party Committee and President of CITIC泰富, Secretary of the Party Committee and Chairman of CITIC泰富特钢, delivered a welcome speech. Zhou Houshun, Director of the Technology Division of the Office of the Military-Civilian Integration Committee of Hubei Province, attended the meeting and spoke. Liu Wenxue, Secretary of the Party Committee and General Manager of Daye Special Steel, presided over the meeting. Representatives from main engine research institutes, main engine factories, landing gear manufacturing plants, aviation forging plants, and related research institutes, along with numerous experts and leaders, were invited to attend.

According to the introduction, for a long time, Daye Special Steel has been committed to meeting major national needs, supporting national heavy-duty equipment and super projects, and actively exploring in the research and production of aerospace products. In recent years, with the trust and support of various aircraft design institutes, main engine manufacturers, landing gear companies, aviation forging plants, and related research institutes, Daye Special Steel has invested nearly 100 million yuan to introduce internationally advanced special smelting, forging, heat treatment, physical and chemical testing, and nondestructive testing equipment to address the supply bottleneck of core key materials for aircraft landing gear. Since then, the company has invested over 100 million yuan in research and development expenses for landing gear steel, fully advancing the product development and certification of related materials. Over the years, Daye Special Steel has successively completed the development and certification of landing gear steel for major batch production and research models designed by main engine manufacturers such as AVIC Landing Gear, and has also completed the verification of material and forging batch stability, quality uniformity, comprehensive performance, as well as the verification of parts and landing gear processing technology and static drop fatigue assessment, according to the requirements of various aircraft design institutes and AVIC Landing Gear. The company has completed the installation review and entered the batch supply stage, significantly alleviating the supply bottleneck of key materials for landing gear.

Hubei Provincial Party Committee and the provincial government place great emphasis on the development of the aviation industry, listing it as a key direction for the province's breakthrough development in five advantageous industries, specifically in the high-end equipment manufacturing sector. The steel used for aircraft landing gear, as a critical material in the aviation field, has a very promising development prospect. In the future, it will promote Daye Special Steel's deep integration into the national aviation industry's innovation and supply chains, creating a shining brand for Hubei's new materials industry. (Zhu Yousong)

Shougang's two products are launched in the world

A number of new technologies were released during the same period

On a certain date, the first annual Shougang New Energy Vehicle Soft Magnetic Material User Technology Seminar was held in Suzhou, Jiangsu Province. Two new products were globally launched, and several new technologies, including self-bonding coatings, were unveiled.

It is a comprehensive upgraded product based on the best-in-class product with a thickness of .mm, achieving new breakthroughs in both strength and iron loss indicators. Additionally, Shougang has adopted its independently developed rapid self-adhesive coating, which further enhances the core stiffness and thermal conductivity of the product when applied to new energy vehicle drive motors, reducing iron loss by over %.

The product is specifically designed for high-performance, high-speed electric motors, offering safety far beyond conventional products. It has successfully addressed the industry challenge of not being able to achieve both low iron loss and ultra-high strength simultaneously, breaking the iron loss limit of watts per kilogram and reaching the best iron loss level among industry-equivalent products. Additionally, Shougang has focused on the high-speed development trend of the new energy vehicle drive motor industry and developed a new high-strength product, which was comprehensively introduced at the event.

During the conference, Shougang Zhisin unveiled a new self-bonding core technology. This technology is a key core technology driving the iterative upgrade of new energy vehicle motors towards higher energy efficiency and lower losses, and will lead the development trend of automotive motors and thin strip motors. Additionally, Shougang Zhisin also introduced a new loss reduction technology and two new core testing technologies. (Tang Fengning, Zeng Jiantao)

Panzhihua Iron and Steel Co., Ltd. accelerates speed and increases efficiency

Recently, the research and application project on the control technology for easily pickled scale, undertaken by Panzhihua Iron and Steel Research Institute under Ansteel Group, has passed the acceptance and achievement evaluation. The technology for regulating the scale structure and the domestically pioneering pre-fabricated oxide layer crack technology, after being applied at Panzhihua Vanadium and Titanium Plate Mill and Chengdu Plate Company of Panzhihua Iron and Steel, have significantly accelerated the pickling process section by over %, leading to a notable increase in production efficiency.

The pickling process, especially the low unit speed in the pickling section, has long been a bottleneck in increasing cold rolling capacity. Previously, due to the influence of the structure and thickness of the oxide layer on the raw material surface, the efficiency of the pickling process for interstitial-free steel and hot-dip galvanized steel reacting with hydrochloric acid was low. The unit had to adopt a production process with low speed, high concentration, and high temperature, which not only affected production efficiency but also led to defects such as local over-pickling and under-pickling in the strip steel, reducing the yield of the strip steel.

Facing the urgency of on-site production, Pangang, based on laboratory research, combined with the characteristics of surface oxide layer transformation of pickling raw materials, conducted key technology research on red scale control, organization structure regulation of oxide layers in easily pickled products, and high-temperature oxidation behavior. It innovatively proposed technical measures for controlling the structure of easily pickled oxide scales, developed the technology for pre-cracking hot-rolled oxide scales in China, and formed a complete set of easily pickled oxide scale control technology.

The application of this project has significantly improved the production efficiency of the acid pickling unit process section at Pangang, markedly enhancing the surface quality of the pickled strip steel. This not only strengthens the production capacity of Pangang's core products but also enhances the market competitiveness of Pangang's cold-rolled products, contributing to the brand building of Pangang's cold-rolled automotive steel and home appliance steel. (Meng Xianglin, Yin Jingjing)

Zhang Xuan Technology's ultra-low temperature, high-toughness stainless steel is rolled off the production line

Recently, the ultra-low temperature high strength and toughness stainless steel material (-), developed and produced by HeSteel Group Zhangxuan Technology, was successfully rolled off the production line. Upon inspection, all key indicators of the product exceeded the requirements of the technical agreement and will be used in the manufacturing of key devices for nuclear fusion. This marks a significant breakthrough for the company in the transformation of special steel and high-end development.

Zhang Xuan Technology has always focused on national strategic needs and cutting-edge key areas, actively addressing the technical challenge of achieving both high strength and high toughness in materials under extremely low temperatures, enabling the materials to be applied in large-scale national cryogenic engineering projects. This has been designated as a key research topic at the Hebei Iron and Steel Group level. In the same year, the company established a cooperative relationship with the Institute of Plasma Physics, Chinese Academy of Sciences, jointly developing and producing ultra-low temperature high-strength and tough stainless steel for nuclear fusion applications.

Zhang Xuan Technology leverages the advantages of its national key laboratory and research teams to address material property requirements, focusing on key processes such as vacuum smelting, electroslag remelting, and forging, and achieving substantive breakthroughs in technical challenges such as nitrogen control and forging defects. In the product development process, Zhang Xuan Technology employed the "nitrogen refilling" precise nitrogen control technology, repeatedly adjusting the addition amounts and sequences of various alloying elements in the material, reducing nitrogen escape in a vacuum environment, enhancing the solubility of nitrogen in steel, and gradually solidifying the nitrogen absorption rate under existing vacuum smelting conditions, successfully resolving the precise nitrogen control problem in materials. In coordination with a new electroslag remelting slag system, the company innovated the electroslag full-process auxiliary deoxidation process, simultaneously utilizing the fast forging machine's full-program intelligent control deformation process to ensure constant output of pressure and force throughout the forging process, making the material's microstructure more uniform and its low-temperature comprehensive performance more stable, overcoming the defect of material cracking, and laying a solid foundation for subsequent material batch production and industrial application. (Wang Yang, Liu Lin)

TISCO helps localize my country's photovoltaic polysilicon core equipment

Global launch of alloy wide and thick plates with a single weight ton or more

This newspaper reported (Reporter Luo Zhonghe) On the day, a reporter from China Metallurgical News learned from China Baowu Taiyuan Iron and Steel (Group) Co., Ltd. that in early month, Qinghai Asia Silicon Industry Semiconductor Co., Ltd. (hereinafter referred to as Asia Silicon Industry) sent a letter of thanks to Taiyuan Iron and Steel, expressing gratitude for the outstanding contribution made by Taiyuan Iron and Steel to the timely and successful commissioning of the first domestically produced photovoltaic polysilicon core equipment, the cold hydrogenation reactor.

It is reported that in the month of the year, China's first set of photovoltaic polysilicon core equipment, the cold hydrogenation reactor, was successfully and safely put into operation on time at Asia Silicon Industry, using entirely domestically produced materials. This achievement marks a transformation from reliance on imports to domestic self-supply, making it a milestone event in the construction of China's clean and renewable energy industry, and holds strategic significance for promoting the development of the new energy industry. As of now, the equipment has been operating smoothly.

Today, the photovoltaic industry has become a pillar of China's new energy sector. China's photovoltaic industry has maintained global leadership for many years in terms of technological capabilities, power generation, and installed capacity, with a broad market outlook. The demand for key materials in photovoltaic conversion, such as polysilicon, has also surged rapidly. As market competition intensifies, the core equipment for polysilicon production, the cold hydrogenation reactor, is evolving towards larger size and higher parameters. This development necessitates the rapid large-scale supply and upgrading of key materials, such as iron-nickel-based alloys, with requirements for greater thickness and single weight.

For a long time, the polycrystalline silicon core equipment reactor has relied on imported iron-nickel-based alloy wide and thick plate materials, which have been constrained by small specifications, high costs, and long delivery cycles, becoming a bottleneck in the development of the polycrystalline silicon industry, urgently requiring localization. The customer not only demanded stringent performance requirements such as high temperature resistance, high pressure resistance, strong corrosion resistance, and extremely high surface quality for this product, but also unprecedented requirements for thickness and plate weight, presenting extraordinary technical challenges. Domestic steel mills had never before supplied such products.

In the first half of the year, Taiyuan Iron and Steel (TISCO) took on the mission of achieving localization and large-scale supply breakthroughs in key materials for the photovoltaic industry. Through arduous technical efforts and boldly adopting an efficient short-process technology route, TISCO resolved a series of technical challenges in the production of wide and thick plates made from iron-nickel-based alloys, achieving significant innovation in the production process. The company independently developed high-performance, high-quality wide and thick plates, which were mass-supplied in the same year. Subsequently, in response to the material upgrade needs of the polysilicon project, TISCO achieved a global first with alloy wide and thick plates weighing over 100 tons, filling a market gap. In the month of the year, this R&D project won the first prize of the Metallurgical Science and Technology Award from the China Iron and Steel Industry Association and the China Metal Society; in the same month, it was also nominated for the annual innovation award of the World Steel Association's (the 1st) "Prize."

Cultivate True Skills and Strengthen the "Firewall"

On a certain date, Tangsteel Company of HeSteel Group's security department firefighters were conducting a fire emergency drill (as shown in the picture). This year, the 9th of November marks the 31st "National Fire Safety Day," with the theme "Fire Safety for All, Safety First." To further strengthen the main responsibility for fire safety and enhance emergency rescue and response capabilities, Tangsteel has closely integrated its operations to organize multi-level and multi-scenario fire emergency drills. These drills focus on molten metal, hazardous chemical storage and use, as well as crowded areas, to strengthen fire hazard inspection and governance, laying a solid foundation for ensuring long-term safe production. (Text by Lian Wei, Photo by Zhao Hui)

Metallurgical Media: Scan to Follow

编辑 | 李昕芮
审核 | 张垚
策划 | 陈晓莉