摘要
研究了复合纳米Si C粉体对HT250性能的影响,找到了适合铸造生产现场的复合纳米Si C粉体加入工艺,并在柴油发动机气缸盖上进行应用试验。研究表明:(1)在HT250中加入复合纳米Si C粉体对改善材料性能有明显效果,其中耐磨性和耐冷热冲击性提升幅度突出;(2)复合纳米Si C粉体对材料性能的影响与材料本身合金成分、粉体加入量和加入工艺有关;(3)在某6缸柴油机气缸盖上进行的应用试验表明,加入粉体后可以明显改善缸盖底面鼻梁区裂纹情况,使气缸盖顺利通过可靠性试验。
The effect of Nano Si C composite powders on the performance of HT250 was studied. A suitable casting nano Si C composite powder was chosen in a diesel engine cylinder production. The results indicated that：（1）Nano Si C composite powders had a significant effect on improving HT250 properties,in which the abrasion resistance and thermal shock resistance had the great improvements.（2）The effect of nano Si C composite powder on material properties was related to material composition,the amount of powder added and the process method.（3）The application test on a six-cylinder diesel engine cylinder head shown that,the crack on nose area of the cylinder head was significantly improved. That made the cylinder head successfully passed the reliability test.
出处
《现代铸铁》
CAS
2015年第5期45-48,共4页
Modern Cast Iron
