硬质合金钢的性能与化学成分及WC晶粒度关系探讨

Study on the Relationship Between Properties,Chemical Composition and WC Grain Size of Hard Alloy Steel

硬质合金材料具有优良的物理力学性能和化学稳定性能,其特性可通过改变成分与粒度来满足更大范围的工具性能需求,可根据加工方式不同调整硬质合金钢材料的主要特性,通过对比分析了钴含量及碳化钨晶粒度的大小对硬质合金钢物理力学性能的影响,介绍了一种含稀土元素的硬质合金钢材料的抗腐蚀性能和应用范围。结果表明,在硬质合金粉末中加入一些稀土元素可提高材料的抗氧化性能,还可控制WC晶粒的不均匀长大,细化晶粒。

Carbide material has excellent physical and mechanical properties,and chemical stability.Its characteristics can be changed by changing the composition and particle size to meet the requirement of a wider range of tool performance requirements.The main characteristics of hard alloy steel materials can be adjusted according to different processing methods.The study analyzes the effects of cobalt content and tungsten carbide grain size on the physical and mechanical properties of hard alloy steel,and corrosion resistance and application range of a kind of hard alloy steel containing rare earth elements.The results show that adding some rare earth elements to cemented carbide powder can improve the oxidation resistance of the material,control the uneven growth of WC grains,and refine the grains.