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对国内三十多家工厂应用冷铁情况作了调查,对冷铁的复用问题以及冷铁对冒口补缩作用的增益效果进行了实验研究。指出:冷铁的复用次数应予限定,冷铁对冒口补缩的增益效果有一临界限度。
An investigation was made on the application of chilled iron in more than 30 domestic factories. Experimental studies were conducted on the reuse of chilled iron and the gain effect of chilled iron on riser feeding. It is pointed out that the number of times for the reuse of chilled iron should be limited. There is a critical limit to the gain effect of chilled iron on riser feeding.