新型稀土锶复合细化剂对环保硅无铅黄铜组织性能的影响

Effects of new rare earth Sr composite grain refiner on microstructure and properties of environmentaly friendly lead-free brass of silicon

主要研究了新型稀土锶复合细化剂对环保硅无铅黄铜组织性能的影响,主要是新型稀土锶复合细化剂对熔体流动性,以及细化剂加入量对铸锭质量和晶粒大小的影响.研究结果表明,新型稀土锶复合细化剂的加入能提高熔体的流动性,并且加入量为0.03%~0.04%时,晶粒度可以减少50%以上,铸锭的抛光杂质点也少于1个达到0级标准.

The effects of new rare earth Sr composite grain refiner on the microstructure and properties of enviromentally-friendly lead-free brass of silicon are mainly studied.The new rare earth Sr composite grain refiner influences grain refiner,reduce dendrite and melt flowability when changed usage.The result shows that adding new type Sr composite grain refiner of 0.03%0.04%can make grain refinement reduced by more than 50%,impurity number of polished ingot lowed 1,numbers of dendrite reduced,great melt flowability.