「シュメルツバサルト」の定盤用材料としての適応性(1)

概要

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The pervasion of surface plate stones, which began to be used towards the Second World War, has been remarkable, and now the production of stone surface plates is said to be equal to that of cast iron surface plates heretofore in use. The reason is that stone surface plates are more profitable than iron surface plates partly because the former is strong against heat and is hard to transform for natural products, and partly because the former is chemically strong and hard with rockforming minerals in it. On the other hand, surface plate stones have many faults. Schmelz Basalt which we have studied is a material made frcm melted Basalt. Therefore it seems to have a gocd point of iron and to be easy to cast and form, so we tried investigating whether this is the material adaptable for surface plates. As the fundamental experiment for this purpose, this time we have examined the specific gravity, the coefficient expansion, the anticorrosive nature, the hardness and the influence of scratch trace on planes, and compared them with those of cast iron and other stone materials. As the result, we have gained a rather satisfactory effect for usins as the material of surface plate.
宇部工業高等専門学校の論文
1974-03-20