论文部分内容阅读
通过试验证明、用铁屑、石墨、桐油配制的芯砂,用在油砂芯局部地方作外冷铁,对消除球墨铸铁、普通铸铁件局部热节处的缩孔、
Through experiments, it has been proved that the core sand prepared with iron filings, graphite and tung oil is used as the external cold iron in the local area of the oil sand core to eliminate the shrinkage cavities at the local hot joints of ductile iron and ordinary cast iron,