用硬度HRC鉴别高珠光体含量球铁凸轮轴中球化率和珠光体含量的试探  

Hardness HRC Identification of the Nodularity and the Pearlite Content in a Ductile Iron Camshaft with High Pearlite Content

作　　者：沈保罗 李莉 岳昌林 周蓉 白维均 张昊 孙大鹏 

机构地区：[1]成都金顶凸轮轴铸造有限公司,四川郫县611732

出　　处：《中国铸造装备与技术》2011年第4期29-32,共4页China Foundry Machinery & Technology

摘　　要：通过统计分析研究了高珠光体含量球铁的基体硬度HRC与球化率(n)/珠光体含量(P)的关系。结果表明,n和P都与基体硬度HRC正相关。P>75%～80%,HRC≤23;P>80%～85%,HRC≤25;P>85%～90%,HRC>25。利用上述关系,可以用HRC对球铁凸轮轴中的球化率和珠光体含量进行鉴别。该方法已经用于生产实践。The relationship between the base hardness HRC of a ductile iron camshaft with high pearlite content and the nodularity（n）/the pearlite content（P） has been studied by using statistical analysis. Results showed that the nodularity（n）/the pearlite content（P） and the base hardness HRC has positive correlation. P〉75-80% ,HRC ≤23; P〉80-85%, HRC ≤25; P〉85-90%, HRC〉25.Using the above relationship,the nodularity and the pearlite content in a ductile iron camshaft can be identified.This method has been used in the production practice.

关 键 词：球墨铸铁 凸轮轴 硬度 球化率 珠光体含量 

分 类 号：TG255[金属学及工艺—铸造]