铜/钢双金属泵体转子界面结合技术研究  

Research on Interface Bonding Technology of Lead Bronze/Steel Bimetal Piston Hydraulic Pump Rotor

作　　者：刘少杰[1] 张国伟[1] 王明杰[1] 

机构地区：[1]中北大学材料科学与工程学院,山西太原030051

出　　处：《热加工工艺》2015年第7期73-77,共5页Hot Working Technology

摘　　要：对比诸多制造双金属工件方式及性能的优劣,本文采用重力铸造方式得到铅青铜与碳钢的结合面,其剪切强度达134 MPa、原子扩散层厚度达100μm,且无偏析、氧化;并总结得到了完整稳定的实验浇铸工艺流程。通过对结合层的组织、成分及其力学性能等的检测分析证明,优良的结合面是由接触面异种金属原子互扩散作用形成过渡层而得到的,并进一步检测表明,该原理形成的结合为性能良好的冶金结合,能达到较高的工程使用标准。Compared the advantages and disadvantages of the manufacture of double metal workpiece and performance, the interface of lead bronze and steel is obtained by gravity casting. The shear strength of the interface can reach 134 MPa. The atomic diffusion layer thickness is above 100μm, and then the process of casting integrity stability experiment is summarized. Through the detection of binding layer microstructure, composition and mechanical performance analysis proof, the excellent binding surface is composed by the contact surface of dissimilar metal atomic interdiffusion effects of transition layer. The further tests show that, the formation of the bonding formed under the above principle is metallurgical bonding with good performance, which can reach higher engineering standard.

关 键 词：双金属 铅青铜 重力铸造 冶金结合面 原子扩散 

分 类 号：TG291[金属学及工艺—铸造] TG244