Abstract
It took nearly 3 months from September 1954 to build and set-up the furnace and then about a year to accomplish its test operations and remodeling. The actual carburizing of work parts was commenced in January 1956 and on the whole satisfactory results were obtained. A brand of refined domestic propane gas was used, which did generally well enough but we found a generator of high performance was needed. An imported generator was used and continuously operated for nearly 11 months, giving good results without causing troubles. The deviation of carbon content in the pieces worked with this furnace was found very low as compared with that of pieces treated by the pack carburizing method in general use in Japan so far. Consequently we can predict a low deviation in the micro-structure, the effective case, the hardness and the deformation of the parts processed in this furnace.
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More From: Journal of the Japan Institute of Metals and Materials
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