The Method of Powder Cutting of Cast Iron (Report II)

概要

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As was stated in Report I, in the application of iron powder method to the cutting of cast iron, the cutting efficiency is greatly influenced by the grain size, carbon content and quantity of sprayed iron powder.<BR>This is attributed to the facts that different grain sizes and carbon contents of the iron powder make differences in ignition temperature and combustion velocity and that the efficiency therefore depends upon the appropriate spraying of the powder into the part of the flame at the highest temperature.<BR>The present paper reports of an investigation carried out to obtain the most desirable iron powder as flux by heating iron powders of different sizes and carbon contents in electric furnace and by checking the temperateres of ignition due to oxygen flow and combustion velocity.<BR>Further study was made to know the most desirable mixing rate of potassium chloride and aluminum powders with iron powder through investigation of the influence of mixing upon the cutting efficiency.
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