論説
鋳型砂の研究－特に砂粒子分の粒度分布に就て
1950 年 22 巻 1 号 p. 10-14
詳細
1950 年 22 巻 1 号 p. 10-14
Studing on sand particles of casting sand led us to the conclusions as following :
1) In the case of equal size of sand grain, the strength of a sand mold rises in inverse proportion to square of the mean diameter of sand grain.
2) The permeability of sand mold increases proportional to the mean diameter of sand grain.
3) The roughness of casting surface influenced proportionaly by the space size between each sand grain which measured by applying the surface tention test using mercury to this. (N. T.)
