压力铸造件精度高、生产率高,在较长一段时间里应用于铸造生产。但是,由于铁合金的熔点高,高温的铁水(钢水)又吸收有较多的气体,铸件往往含有较多的气孔,金属压型的寿命低,因此,至今铁合金的压力铸造仍为一难题。近十几年来,日本、苏联等国都对此作了长时间的研究,采用金属钼作为基础材料制成金属压型,对可锻铸铁、球墨铸铁、18—8不锈钢压铸获得成功。日本芳贺行雄等人就 Pressure casting high precision, high productivity, in a long period of time used in casting production. However, due to the high melting point of ferroalloy, high temperature hot metal (molten steel) absorbs more gas, the castings often contain more pores, and the life of metal profile is low. Therefore, the pressure casting of ferroalloy is still a problem. Over the past decade, Japan, the Soviet Union and other countries have made long-term research on this, the use of metal molybdenum as a base material made of metal pressure on the malleable iron, ductile iron, 18-8 stainless steel die-casting success. Japan Hokkaido and others on the line