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一冶煉方面 1.改进綱錠質量 (1) 在鋼錠中安放冷铁解决大鋼錠的內部疏松。目前正在試驗使用各种冷铁。作过的三种形式如圖1所示,其中a、δ为用鑽有小孔之鋼板焊成,B为用鋼絲網制成,冶鉄总重为鋼錠的2.5％。这三种方式以B为最好,伹現在还在继續研究中。 (2) 真空注錠:目前苏联采用下面几种方法,最大澆到120吨鋼錠,准备今年处理200吨～230吨鋼錠。①鋼錠模放于真空处理室中处理,圖2是澆120吨鋼錠用的真空处理室。真空度为7～12公厘水銀柱。处理120吨鋼錠用了9台真空泵,其中二台PBH-30型
A smelting aspects 1. To improve plain quality (1) placed in the ingot to solve the internal loose large ingots. Currently testing a variety of cold iron. The three forms made as shown in Figure 1, where a, δ for the drilling of small holes welded steel plate, B is made of steel wire mesh, the total weight of steel slab is 2.5%. The three ways to B is best, 伹 now continue to study. (2) vacuum injection: At present, the Soviet Union adopted the following methods, the maximum pouring to 120 tons of ingots, ready to handle 200 tons to 230 tons of ingot. ① ingot mold placed in the vacuum processing chamber, Figure 2 is pouring 120 tons of ingot vacuum processing chamber. Vacuum degree of 7 to 12 mm mercury column. Nine vacuum pumps were used to process 120 tons of ingot, of which two were PBH-30 type