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一九八二年九月二十二日至二十四日河北省冶金工业局邀请国内有关科研、设计、高等院校及企事业单位的代表,在秦皇岛市对秦皇岛耐火材料厂研制的小方坯连铸用锆质定径水口砖进行了技术鉴定。认为该厂研制成功的小方坯锆质定径水口砖,生产工艺可行,性能良好,各项性能达到或接近西德同类进口砖水平,可以满足小方坯连铸工艺的要
From September 22nd to September 24th, 1982, Hebei Metallurgical Industry Bureau invited domestic representatives from relevant departments of scientific research, design, institutions of higher learning and enterprises and public institutions to conduct research on the small party developed by Qinhuangdao Refractories Factory Billet continuous casting with zirconium nozzle diameter of the technical appraisal. It is considered that the small billet Zirconium nozzle with a diameter of about 50 mm, which is successfully developed by the plant, is feasible and has good performance. All the properties meet or close to the level of similar imported bricks in West Germany and can meet the needs of continuous casting of billet