球状黒鉛鋳鉄の鋳込みから凝固完了までの体積変化 [in Japanese] Volume Change from Pouring to Solidification of Spheroidal Graphite Iron Casting [in Japanese]
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The measurement of volume change, including liquid contraction and subsequent dilation over the eutectic temperature range, was carried out on experimental castings of spheroidal graphite iron for various chemical compositions and pouring temperatures. The experimental casting was composed of a casting body heated small diameter cylindrical riser that magnifies the effects of contraction and dilation of the casting body, and sprue. The volume change of casting body was measured as the displacement of float on the upper surface of the riser. Experimental results were analyzed statistically, to determine the effects of the pouring temperature and C, Si content on the volume change of the casting. It was found that the pouring temperature and C content had significant effects while Si content had none. These results indicate that the chemical composition of spheroidal graphite iron is effective not only to produce high mechanical properties, but to prevent casting shrinkage.
- THE JOURNAL OF THE JAPAN FOUNDRYMEN'S SOCIETY
THE JOURNAL OF THE JAPAN FOUNDRYMEN'S SOCIETY 68(10), 843-851, 1996-10-25
Japan Foundry Engineering Society