灰鑄鐵의 磨減特性에 미치는 微量合金 元素의 影響 = Influence of small amounts of alloy elements on wear characteristics of Cast iron

다국어 초록 (Multilingual Abstract)

Specimens of the gray cast iron which were added small amounts of alloy elements (Ti, V, Sn, p, Nb, B, Mo, Ni, Cu, Cr) were casted into green sand mold and centrifugal easting mold.
Both, the microstructures and wear characteristics of the samples are studied.
The result are as follows.
1) The centrifugal castings are more large amounts of 1-2% carbide and less size of 0.01-0.04 mm graphite than the green sand mold castings at the same composition.
2) Under the present experimental conditions, the relationship between the abrasion speed and the abraded amount are : 0.6 m/sec for maximum abrasive wear of the green sand castings, 1.4 m/sec for maximum abrasive wear of the centrifugal casting.
3) Wear-resistance of the unalloyed centrifugal castings is more excellent than the green sand castings, which alloyed small amounts with Ti, V, Sn, Mo, Cu, Ni and Nb element.
4) The cast Iron with phosphorus and boron elements have excellent wear-resistance than the cast iron with other elements at dry wear condition.