目前国内离心铸造气缸套废品率高,工艺收得率低,造成材料能源的巨大浪费,为了提高离心铸造气缸套质量,国内外开展了多方面的研究工作。我们经过两年研究,通过试验设计、筛选优化,研制成功了气缸套离心铸造用GJB系列高效精炼变质剂。该剂集精炼、变质与合金化功能于一体,利用离心力场条件对铁水进行型内精炼、瞬时孕育与微量合金化,大大提高了精炼变质效果,可显著减少铸造缺陷,改善金相组织,提高机械强度与耐磨性能,并可提高铸件工 At present, the centrifuge casting cylinder liner rejection rate is high, the process of low yield, resulting in a huge waste of material energy, in order to improve the quality of centrifugal casting cylinder liner, carried out a wide range of domestic and foreign research work. After two years of research, we successfully developed the GJB series of high-performance refining modifiers for centrifugal casting of cylinder liners through experimental design, screening and optimization. The agent sets the functions of refining, metamorphism and alloying into one, and utilizes centrifugal force field conditions to perform in-mold refining, instant inoculation and microalloying, greatly improving the refining and metamorphism effects, significantly reducing the casting defects, improving the microstructure and improving Mechanical strength and wear resistance, and can improve the casting workers