用于超耐热合金过滤器和催化变换器衬底的现有工艺,已进一步发展应用到灰铁与球铁的过滤。在灰铁和球铁铸件内的夹渣对其使用性能、加工性能与外观都有不利影响。由于在铁水熔炼、合金处理与传送等过程中要产生熔渣,所以必须花费较大的努力来防止其进入型腔。为了保证熔渣不进 Existing processes for superalloy filter and catalytic converter substrates have been further developed for the filtration of gray iron and ductile iron. The slag inclusions in gray iron and ductile iron castings adversely affect their handling properties, processability and appearance. Due to slag generation during hot metal smelting, alloy handling and transfer, greater effort must be taken to prevent it from entering the cavity. In order to ensure that slag does not enter