摘要
以铁基粉末冶金材料Fe-5Cr-2Cu-1Si-1Mo-0．5P—XC作为凸轮材料，采用烧结焊技术实现粉末冶金凸轮与16Mn钢管的连接。研究石墨添加量（质量分数1．5％-2．5％）对粉末冶金凸轮材料烧结致密化、硬度及凸轮与钢管之间扭矩的影响。结果表明：随石墨含量的增加，烧结坯尺寸收缩率、密度、硬度急剧增加，石墨含量大于1．9％后各性能参数值增加趋势减缓，最大值分别为5％、7．496g／cm^3和53．77HRC；随石墨含量的增加，扭矩先急剧增大后略有下降，石墨含量为1．9％时扭矩达到最大值980N·m.
Basedon using iron-based powder metallurgy Fe-5Cr-2Cu -1Si-IMo-0.5P-XC alloy as the cam materials, powder metallurgy cam and 16Mn steel pipe was joined through sintering welding technology. The effect of graphite content （mass fraction, 1.5%-2.5%） on sintering densification, hardness and torque of iron-based powder metallurgy materials was discussed. The results show that the shrinkage, density and hardness of iron-based materials increase sharply at first and then slow down with increasing graphite content, the maximum values of 5%, 7.495 g/cm^3, HRC 53.77 are obtained respectively at the graphite content of 1.9%. In addition, the torque increases rapidly at first and then decrease with increasing graphite content, the maximum torque of 980 N·m has also obtained when the graphite content is 1.9 %.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2012年第6期786-791,共6页
Materials Science and Engineering of Powder Metallurgy
基金
国家国际科技合作专项项目(2011DFA51840)
"高档数控机床与基础制造装备"科技重大专项项目(2012ZX04009011)
北京市科技计划项目(D09010304360000)
关键词
粉末冶金
凸轮
轴
烧结焊
扭矩
powder metallurgy
cam
shaft
sintering welding
torque
