我厂主要生产ZG 3Cr18Mn12Si 2N高合金耐热铸钢以及部分ZG25至ZG45碳素钢铸件,铸件最小5公斤,最大件2500公斤。在铸造工艺上碳素铸钢冒口直径在300毫米以下,一般采用园柱或园腰暗冒口,冒口直径超过300毫米以及高合金耐热钢都采用明冒口,按热节大小和轮廓尺寸设置冒口,为了获得无缩孔的铸件,往往要增大冒口的断面和高度,这样成品率低(一般在50％左右,小件只有40％), I plant mainly produces ZG 3Cr18Mn12Si 2N high-alloy heat-resistant cast steel and some ZG25 to ZG45 carbon steel castings, castings minimum 5 kg, the largest piece of 2500 kg. In the casting process carbon steel riser diameter of 300 mm below the general garden or garden dark riser, riser diameter of more than 300 mm and high alloy heat-resistant steel are used riser, according to the size of the heat section and Outline size set riser, in order to obtain non-shrinkage casting, tend to increase riser section and height, so that the yield is low (usually about 50%, only 40% of small pieces)