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中间包等离子加热使钢水过热降低了11.1℃(20),平均铸速提高15%。1994年度由于利用等离子加热,主要是减少了钢水冻结与中止浇铸,增加效益280万美元。中间包的钢水过热对连铸机的生产率和铸坯质量有重要的影响,在钢水温度过低的情况下,铸流出现冻结时必须及早地停止浇铸操作。在铸机停浇的同时,把低温钢水返回冶炼间。在钢水过热特别高的情况下,为了避免漏钢,必须放慢铸速,势必将降低铸机产量。高过热还会使一些钢种产生偏析现象,然而低过热会造成水口堵塞和铸坯表面裂纹。每一钢种有一容许的过热范围,在此范围内铸机的生产率和钢坯质量最佳。
Tundish plasma heating overheated molten steel decreased by 11.1 ℃ (20), the average casting speed increased by 15%. In 1994, due to the use of plasma heating, the main purpose of the project was to reduce the freezing of molten steel and stop the casting, which added an additional 2.8 million U.S. dollars. The overheating of the tundish has an important impact on the productivity of the caster and the quality of the billet. When the temperature of the molten steel is too low, it is necessary to stop the casting operation as soon as there is a freezing of the casting flow. In the casting machine parked at the same time, the low-temperature molten steel back to the smelting room. In the steel overheating is particularly high circumstances, in order to avoid breaking steel, casting speed must be slowed down, is bound to reduce casting machine output. High overheating can also cause segregation of some steels, however, overheating can cause nozzle blockage and surface cracking of the slab. Each steel has an allowable range of overheating, within which casting machine productivity and billet of the best quality.