Meishan develops large diameter composite steel pipe
Steel 3 Chen Minghao, Shen Yumei. A new method for the determination of oxide inclusions in steel by differential heat extraction. Proceedings of the Beijing Metallurgy Annual Meeting Edited by the Beijing Institute of Metals. 1998. 4 Wang Ying. Glow-mass spectroscopic study of the galvanized steel plate coating state (Master's thesis). Beijing: Iron and Steel Research Institute, 1998. 5 Gao Hong. Analytical chemistry frontiers. Beijing: Science Press, 1991. 6 Qi Tingbang, Zhao Huiyuan, Qin Weidong. Hydrogen measuring instrument in molten metal, Chinese patent, CN1036095C. Meishan develops large-diameter composite steel pipe Baosteel Group Shanghai Meishan Mining Co., Ltd. can only produce ceramic composite steel pipe with diameter of 245mm in the past, while the large-diameter ceramic composite steel pipe with diameter of 300mm on the market has a good sales momentum. In order to improve economic efficiency and meet market demand, the company has carried out technical research on large-diameter ceramic composite steel pipes with a diameter of 377mm. At present, it has achieved success. The first batch of large-diameter ceramic steel pipes will be used in mine concentrators. The company currently has the ability to produce 377mm ceramic composite steel tubes in small batches. The H-beam hot-rolled H-beam used in the development of vehicles by Matong Ma Steel has the advantages of high efficiency, energy saving, pressure resistance and environmental protection. It is a new type of building material promoted by the Ministry of Construction and the Metallurgical Bureau. Ma Steel's hot-rolled H-beam for SM400B vehicles developed by China Railway Materials Corporation has been successfully rolled. After testing, not only its steel chemical composition and mechanical properties have reached the contract requirements, but also reached the international iron standard from the normal temperature to the -60 * C series of test temperature conditions under the impact of the work standard in the development process, Ma Steel overcomes the years of molten steel And finished billets. foreign. Tundish molten steel flow optimization control system With the improvement of steel product quality requirements, the requirements for steel production process are getting higher and higher, and the flow control of secondary metallurgy and tundish is also increasingly strict. European Foseco Steel has developed the Turbostop system to control the flow of molten steel. The system is a device for introducing molten steel into a tundish. Its introduction allows the molten steel flow to be parallel to the intermediate wall and the flow rate is stable. The volumetric phosphorus and sulfur content of the tundish and the technical difficulty of controlling the endpoint temperature and carbon content. Zhangjie's new high-performance high-temperature anti-corrosion alloy (OR1300), the high-temperature materials processing group of the Iron and Steel Research Institute, has recently developed a new generation of anti-corrosion alloy that can be used in various mediums such as high temperature oxidation and oxidative corrosion. The material (OR1300) can be used for a long time at a high temperature of 1200~1310C. The maximum short-time use temperature is 1 360*C. The oxidation resistance and overall performance of the alloy are superior to the current high-temperature anti-corrosion alloys at home and abroad, such as The main performance indicators such as Alloy2143!7473YC52 reported at home and abroad are at the international leading level: 20C 100%, 80%; the service life of the site is obviously higher than that of similar high-temperature alloys; the new alloy is mainly used in metallurgy, machinery, petrochemical, mining and other industries. Various thermocouple protection tubes, high temperature gas pipelines, furnace structures, furnace tubes, thermal sensors, high temperature nozzles, high temperature oxidation resistant molds and other high temperature equipment. This magazine can be used optimally, and at the same time, because the flow rate of the tundish is low, more inclusions are floated on the surface of the molten pool and separated, so that even if the ladle is replaced or the steel is changed, the cleaning can be stably produced. Other advantages of the Turbostop system include a higher yield of molten steel and a reduced abrasion of the tundish lining. Lan Ruo from "MP1* current account editor Zhao Chengping Pixel filter, referring to the arrangement of RGB channels in color filters, arranges multiple micron level spectral channels into a spectral period according to a certain pattern. The pixel filter can be customized according to the detector pixel size to achieve one-to-one alignment of the spectral channels and detector pixels. Pixel Filter,Reverse Mosaic Filter,Pixel Blue Light Filter,Digital Pixel Effect Changchun Champion Optics Co.,Ltd , https://www.champion-optics.com