摘要
通过硬度、金相、扫描电镜、能谱分析、拉伸等测试手段,对自制YD型硬质合金堆焊焊条和进口焊条的表面质量、显微组织和力学性能进行对比分析研究。试验结果表明:进口焊条的表面质量更好,呈狼牙棒状,但两种焊条的力学性能和组分差别不大。基体金属与硬质合金结合界面处存在一个过渡区域,两侧组织均发现元素的相互扩散,从而改善堆焊焊条的包覆效果和结合强度。
The surface quality, microstructures and mechanical properties of self-made and imported build-up welding electrode of YD type cemented carbide were compared and analyzed by means of hardness, metallography, scanning electron microscope, energy spectrum analysis and tensile test. The results show that the surface quality of imported build-up welding rod is better and presents a mace shape, but the mechanical properties and composition of two types of build-up welding electrode have little difference. There is a transition zone at the interface between matrix metal and cemented carbide, and element inter-diffusion phenomenon in two sides of microstructure is found, which improves the coating effect and bonding strength of build-up welding electrode.
作者
蹇海根
王业东
杨孝梅
雷新蕾
张唯
熊锦超
周恒
JIAN Haigen;WANG Yedong;YANG Xiaomei;LEI Xinlei;ZHANG Wei;XIONG Jinchao;ZHOU Heng(School of Metallurgical and Materials Engineering,Hunan University of Technology,Zhuzhou 412007,China;Hunan Esoe Intelligent Manufacturing Co.,Ltd.,Zhuzhou 412000,China)
出处
《热加工工艺》
北大核心
2020年第7期146-148,共3页
Hot Working Technology
基金
湖南省自然科学基金项目(2018JJ4060)
国家级大学生创新创业训练计划平台项目(201811535021)。
关键词
YD型硬质合金
堆焊焊条
表面质量
显微组织
YD cemented carbide
build-up welding electrode
surface quality
microstructure
