Abstract
This report contains the outline of the items decided at the third, fourth and fifth general meetings and the first and second special committees and those which are now on the way of investigation.The main items decided at the Ingot Mould Investigation Committee are as follows:(1) Unified classification of the causes of disusing ingot mould. (2) Hysteresis table of ingot mould. (3) Heat treatment of ingot mould. (4) The method of using ingot mould. (5) The method of sampling from ingot mould for microscopic test. (6) Research on the results of using ingot mould at each steel manufacturing factory. (7) The relation between pig iron as the raw material and the life of ingot mould.The items decided at the Roll Investigation Committee are as follows:(1) Selection of Shore Hardness tester. (2) The influence of combined carbon on the hardness of chilled roll. (3) Operation of reverberatory furnace for melting chilled roll. (4) Special properties of grain roll and the results of using it. (5) Research on the results of using roll at each steel manufacturing factory.
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