特殊鑄鋼の研究(III)

Abstract

The author studied on the cast structures of some special cast steels which were made to add Ca-Si, Ni or Mn in Cr-Mo cast steel, and Cr, W, V, Ti or Al in Cr-Mn-Si cast steel as follows.Special cast steel, two types of caet structures are disintegrated, that is, the network structures and the dendritic ones. The network structures are formed with Si, Ni or W. But even in each caee if these elements are not adequately used for the network formation, the dendritic ones appear.There exist two cases in dendritic structures, one refined by the addition of Si, Cr V or W, the other not refined by Ni or Mn.