电渣重熔新技术的研究现状及发展趋势

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Abstract In 1940, Hopkins of the United States obtained the US patent for "Carol Electroforming Ingot", and the electroslag remelting technology was first proposed but not promoted. In 1952, two scientists, Medoval and Patton, in the Soviet Union, trial-produced the first stainless steel electroslag ingot in the laboratory. In 1958, a 0.5 t P909 electroslag furnace was built in the Dnepartite Steel Plant in Zaporozhye, a city in southeas-tern Ukraine. From 1959 to 1960, the world's first electroslag remelting workshop had been built, opening the era of industrialization of electroslag remelting technology. Britain was the first Western country to engage in the research of electroslag remelting technology, and then metallurgical industries from various countries began to develop a variety of new electroslag furnaces. Austria's INTECO company developed the rapid electroslag technology ESRR, which realizes rapid and continuous operation, but the main problem of this rapid electroslag remelting is that the life of the electro-mold is too short, which affects its market promotion. In order to meet the needs of a variety of different sections and slender steel ingots, INTECO has designed an electroslag remelting furnace with drawable bottom water tank, electrode exchange, parallel two-wire busbar with sliding contact and the concept of soft connection without high current. The German VSG company built the world's first pressurized slag furnace with a working pressure of 4.2 MPa, which can produce high-nitrogen steel ingots with a diameter of 1000 mm and a weight of 14.5 tons, which is mainly used for large-scale production of generator guard ring steel. In the 21st century, the newly-built electroslag furnaces in developed countries gene-rally adopt the protective atmosphere method. Germany has also researched, designed and manufactured two 20 t vacuum electroslag furnaces, which have been industrially applied in Germany and Japan respectively.
China's Electroslag Metallurgy Technology started relatively early. In 1958, Chinese metallurgical workers began the research of electroslag remelting technology. In 1960, the double arm electroslag remelting furnace was successfully built in Chongqing special steel plant. The second national Electroslag Metallurgy conference was held in Chongqing in 1964, which marked that China's Electroslag Metallurgy Technology entered the stage of large-scale research, development, popularization and application. In the past 60 years, Chinese metallurgical workers have found and invented many unique theories and technologies in the field of Electroslag Metallurgy. Since the 21st century, China has developed a series of new electroslag remelting technologies, mainly including protective atmosphere electroslag furnace, vacuum electroslag furnace, pressurized electroslag remelting equipment and high nitrogen steel preparation technology, electroslag continuous casting technology, electroslag remelting super flat ingot technology, electroslag remelting hollow ingot technology, conductive mold technology and electroslag liquid pouring technology, so that China's electroslag remelting technology has always maintained the international advanced ranks.
A brief review of the development history of electroslag remelting industrial production is given, focusing on the introduction and evaluation of new electroslag metallurgical technologies in recent years, including electroslag remelting technology, protective atmosphere electroslag remelting technology, conductive crystallizer technology, and piezoelectric slag remelting, vacuum electroslag remelting technology, extra-thick slab electroslag remelting technology, hollow steel ingot electroslag remelting technology, large steel ingot electroslag remelting technology, and green environmental protection type electroslag remelting new slag system development . In the new stage of development, electroslag metallurgy technology is developing in the direction of high efficiency, energy saving, environmental protection and higher quality.

Key words： electroslag metallurgy technology protective atmosphere control conductive crystallizer development

Published: 05 June 2022 Online: 2022-06-08

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TF142

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	PENG Longsheng
	LIU Chunquan
	ZHOU Hao
	LIN Yinghua

Cite this article:

PENG Longsheng,LIU Chunquan,ZHOU Hao, et al. Research Status and Development Trend of New Technology of Electroslag Remelting[J]. Materials Reports, 2022, 36(Z1): 21100138-9.

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http://www.mater-rep.com/EN/ OR http://www.mater-rep.com/EN/Y2022/V36/IZ1/21100138

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