一最近曾读到了大连建新公司钢铁厂李振南同志的「粉末冶金碳化钨硬质合金刀的制造」论文,该文虽然着重在粉末冶金方面的操作纪录,然而也简明地叙述了该厂的生产经过。建新公司在1948年便恢复了粉末冶金的研究,直到现在,巳经得到了有系统的改进;生产上也有了硬质合金刀片、抽丝模、矿用钻头、等出品。而具体数字告诉我们,最 Recently, he read the paper “Manufacturing of Powder Metallurgy Tungsten Carbide Knives” by Comrade Li Zhennan of the Dalian Jianxin Company’s iron and steel plant. Although the paper focuses on the operation record of powder metallurgy, it also concisely describes the production process of the plant. . Jianxin Company resumed its research on powder metallurgy in 1948. Until now, yam has been systematically improved; there are also cemented carbide inserts, wire drawing dies, mining bits, and other products. And the specific number tells us that the most