北海道産鑄物砂の研究並に小型銑鑄物の鑄肌改良に關する二,三の實驗(II)
1948 年 34 巻 12 号 p. 19-20
詳細
1948 年 34 巻 12 号 p. 19-20
Some experiments for improvement of skin-smooth of castings were carried out. The conditions for improvement, found by the author are as follows:
(1) Sand used; mixed sand (green sand 50%, silica-powder 30%, and sea-sand 20%) to be used for the skin sand
(2) Humidity; 6-9%
(3) Binder; "Ozin" 2·0-1·5% if possible.
(4) Drying; Surfaee to be dried by simple drier.
(5) Fineness; Skin sand should be under 0·3m/m.
