本文在过去研究工作的基础上,通过系统研究及采用正交法进行多方面指标比较,研制出一种新型高效、无公害磷复合变质剂(简称SR—813),经实验室试验及生产实践证实,无论砂型或金属型铸造,当其他工艺参数不变(加入方法、加入量、温度、冷却速度等)时,采用SR—813处理能获得稳定的变质效果,最突出的优点是耐磨性显著增加。 Based on the past research work, a series of new efficient and pollution-free phosphorus compound modifier (referred to as SR-813) was developed through systematic research and using orthogonal method to compare various indicators. After the laboratory test and production practice Confirmed that, regardless of sand or metal casting, when the other process parameters remain unchanged (adding method, dosage, temperature, cooling rate, etc.), the use of SR-813 treatment can get a stable deterioration effect, the most prominent advantage is the wear resistance A significant increase.