不同粒度下Fe-Co-Cu预合金粉末烧结金刚石钻头胎体的组织和性能
Investigation of microstructure and properties of Fe-Co-Cu pre-alloyed powder sintered diamond drill bit matrix with varying particle sizes
舒晨 1徐强 2刘一波 2杨志威 3寇生中 4曹睿4
作者信息
- 1. 兰州理工大学材料科学与工程学院,甘肃兰州 730050;钢铁研究总院有限公司,北京,100081
- 2. 钢铁研究总院有限公司,北京,100081;北京安泰钢研超硬材料制品有限责任公司,北京 102200
- 3. 北京安泰钢研超硬材料制品有限责任公司,北京 102200
- 4. 兰州理工大学材料科学与工程学院,甘肃兰州 730050
- 折叠
摘要
实验采用不同粒度的Fe-Co-Cu预合金粉末配方,通过热压烧结工艺制备了烧结胎体.通过对比分析两种不同粒度预合金粉末烧结胎体的致密度、洛氏硬度、三点抗弯强度、显微组织以及与金刚石的界面形貌,探讨了它们之间的差异.此外,通过钻切实验评估了不同粒度预合金粉末制备的钻头的钻切速度、寿命以及金刚石出露情况,以进一步研究其性能差异.结果表明,更细粒度的预合金粉末DB-02烧结后的胎体具有高致密度(96.9％)和强韧性(抗弯强度达到1 355.7 MPa),同时对金刚石具有更强的把持力,在钻切实验中表现出更快的速度和更长的寿命,刀头金刚石出露高度可达154.2 μm.
Abstract
Sintered bodies were prepared using the hot pressing sintering process from Fe-Co-Cu pre-alloyed powders of varying particle sizes.The densification,Rockwell hardness,three-point bending strength,micro-structure of the two sintered bodies of different particle sizes,and interface morphology between sin-tered body and diamond were comparatively analyzed.Furthermore,cutting experiments were conducted to as-sess the cutting speed,tool life,and diamond exposure of drill bits prepared using pre-alloyed powders with varying particle sizes to further investigate their performance disparities.The results indicate that the sin-tered body of DB-02,prepared with pre-alloyed powder of finer particle size,exhibits higher density(96.9％)and improved toughness(with a bending strength of 1 355.7 MPa).The modified tool design also results in enhanced retention force on the diamond,leading to improved cutting efficiency,extended tool lifes,and a maximum diamond exposure height of 154.2 μm during cutting experiments.
关键词
Fe-Co-Cu预合金粉末/致密度/抗弯强度/金刚石钻头/钻切试验Key words
Fe-Co-Cu pre-alloyed powder/density/bending strength/diamond drill bit/cutting test引用本文复制引用
出版年
2024
NETL
NSTL
万方数据