通过离心铸造蒸汽机车汽缸套的生产实践,认为在合适的铁水成分和严格的操作条件下,采用低转速、低浇温和较低的浇注速度,可以有效地防止大型离心铸铁件的缩松、夹杂等缺陷。文中重点指出,按“5520”经验公式计算的转速,非但不应增大β倍,反而应减小8—12％为宜。 Through the centrifugal casting of steam locomotive cylinder liner production practice, that the appropriate composition of molten iron and strict operating conditions, the use of low speed, low pouring temperature and low pouring speed, can effectively prevent the large centrifugal cast iron parts of the shrinkage, inclusions Other defects. The article highlights that, according to “5520” empirical formula calculated speed, not only should not increase β times, but should be reduced by 8-12% is appropriate.