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简介在1957年与1934年10月至1965年2月采用φ55毫米水口上注重轨钢的试验结果表明:均较同时期采用45毫米水口上注重轨钢时的钢锭表面质量有显著的改善;并在1965年2月份开始将φ毫米高铝水口在生产上全部推广使用。但使用φ55毫米水口之后,钢锭模使用寿命是否会缩短?钢锭模消耗是否会增加?还是一个悬而未决的问题。有鉴于此,遂于1965年2～4月份进行采用φ55毫米高铝水口上注重轨钢对钢锭模寿命影响的试验工作。通过两桶40个新钢锭模的连续观察研究结果证明:在目前出钢温度基本上控制在1560～1575℃,浇注前“对正”做得较好的情况下,采用φ55毫米水口上注重轨钢对钢锭模的使用寿命没有缩短,对钢锭模消耗也没有增加。这批试验钢锭模平均消耗为36.97公斤/吨,比1964年2、3月份用φ45毫米水口上注重轨钢时,钢锭模平均消耗降低3.13公斤/吨。
INTRODUCTION The test results of steel rails on Ø55 mm nozzles in 1957 and from October 1934 to February 1965 showed that there was a significant improvement over the surface quality of steel ingots when using 45 mm nozzles on rail rails during the same period. In February 1965 began φ φ mm aluminum outlet in the production of all the promotion and use. However, the use of φ55 mm nozzle, the life of the steel ingot mold will be shortened? Whether the consumption of ingot mold will increase? Is still a pending issue. In view of this, then in February 1965 2 ~ April carried out using φ55 mm high aluminum nozzle on the rail life of steel ingot mold test work. Through the continuous observation of 40 new ingot molds in two barrels, the results of the continuous observation prove that: at the current tapping temperature is basically controlled at 1560 ~ 1575 ℃, before pouring, “Alignment” is done better, using φ55 mm nozzle Focus on rail steel ingot die life is not shortened, the ingot die consumption has not increased. The average consumption of these test ingot molds was 36.97 kg / tonne, which was 3.13 kg / tonne lower than the average consumption of ingot molds in February and March 1964 when using the φ45 mm nozzle for rail steel.