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1·The service life of the boron surface alloying grey cast iron ingot mold is 43% longer than that of high Mn low si grey cast iron ingot mold.

试验结果表明：铸渗硼灰铸铁钢锭模比同类灰铸铁钢锭模的使用寿命提高43％。

2·The ingot mold made of vanadium titanium vermicular graphitic cast iron has the best comprehensive property.

钒钛蠕墨铸铁是一种新型的工程结构材料，用钒钛蠕铁制造钢锭模具有良好的综合性能。

3·Therefore, it is necessary to study the application of vanadium-titanium vermicular cast iron in ingot mould, glass mold, auto brake drum and brake disc using abundant V-Ti iron in China.

因此，利用我国丰富的钒钛生铁资源，开展钒钛蠕墨铸铁在钢锭模、玻璃模具以及汽车刹车鼓和列车制动盘等方面的应用研究很有必要。