浸渍合金对PDC钻头胎体性能的影响
Effect of maceration alloys on the performances of PDC drill bit matrix
张素慧1
作者信息
- 1. 煤炭科学研究总院,北京 100013;中煤科工西安研究院(集团)有限公司,西安 710077
- 折叠
摘要
PDC钻头胎体的浸润比对其力学性能和微观形貌的影响较大,为了探究浸渍合金对胎体性能的影响规律,采用Cu-Ni-Mn-Zn和Cu-Ni-Mn-Sn 2种浸渍合金制作不同高度的工作层和非工作层试块,得出不同浸渍合金下钻头胎体工作层和非工作层的浸润比及力学性能差异,同时利用扫描电镜对试块的微观形貌和元素含量进行分析.结果表明:试块的浸润比为定值;胎体钻头工作层的浸润比小于非工作层的,微观形貌上表现为工作层中浸渍合金的岛状组织大而分散,非工作层的岛状组织小而致密;对于同种类型的试块,通常浸润比越大密度越大;采用Cu-Ni-Mn-Sn得到的试块硬度均大于Cu-Ni-Mn-Zn试块的,但其抗弯强度和冲击韧性远低于Cu-Ni-Mn-Zn试块的.
Abstract
The wetting ratio of PDC drill bit matrix has a great influence on its mechanical properties and microstruc-ture.To explore the influences of maceration alloys on the performance of PDC drill bit matrix,two kinds of macera-tion alloys,Cu-Ni-Mn-Zn and Cu-Ni-Mn-Sn,were used to make the working layer and the non-working layer test blocks with different heights.The differences in wetting ratio and mechanical properties between the working layer and the non-working layer of the matrix bit under different maceration alloys were obtained.At the same time,scanning electron microscopy was used to analyze the microstructure and the element content of the blocks.The results show that the wetting ratio of the test block is a constant value.The wetting ratio of the working layer of the bit matrix is smaller than that of the non-working layer.The microstructures show that the island structure of the maceration alloy in the working layer is large and dispersed,while the island structure in the non-working layer is small and dense.For the same type of test block,the higher the wetting ratio,the higher the density.The hardness of the test block obtained by Cu-Ni-Mn-Sn is higher than that of Cu-Ni-Mn-Zn,but its bending strength and impact toughness are much lower than that of Cu-Ni-Mn-Zn.
关键词
PDC钻头胎体/浸渍合金/浸润比/力学性能/微观形貌Key words
PDC drill bit matrix/maceration alloys/wetting ratio/mechanical properties/microstructure引用本文复制引用
基金项目
天地科技股份有限公司科技创新创业资金专项(2020-TD-MS011)
中煤科工西安研究院(集团)有限公司科技创新基金(2021XAYJCQ02)
出版年
2024
国家科技期刊平台
NSTL
万方数据