浸渍合金对PDC钻头胎体性能的影响

张素慧

doi:10.13394/j.cnki.jgszz.2022.0192

浸渍合金对PDC钻头胎体性能的影响

doi: 10.13394/j.cnki.jgszz.2022.0192

张素慧^{1, 2,}

1.
煤炭科学研究总院, 北京 100013
2.
中煤科工西安研究院(集团)有限公司, 西安 710077

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）。

详细信息

作者简介:
张素慧，女，1988年生，博士研究生、助理研究员。主要研究方向：钻探机具性能测试与分析。E-mail：zhangsuhui1221@163.com

中图分类号: TG146; TG74
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- 被引次数: 0
出版历程
- 收稿日期: 2022-11-08
- 修回日期: 2023-07-14
- 录用日期: 2023-09-04
- 刊出日期: 2024-04-01

Effect of maceration alloys on the performances of PDC drill bit matrix

ZHANG Suhui^{1, 2
,}

1.
China Coal Research Institute, Beijing 100013, China
2.
Xi'an Research Institute (Group) Co., Ltd., China Coal Technology & Engineering Corp., Xi'an 710077, China

摘要

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。
- PDC钻头胎体 /
- 浸渍合金 /
- 浸润比 /
- 力学性能 /
- 微观形貌
Abstract: The wetting ratio of PDC drill bit matrix has a great influence on its mechanical properties and microstructure. To explore the influences of maceration alloys on the performance of PDC drill bit matrix, two kinds of maceration 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.
- PDC drill bit matrix /
- maceration alloys /
- wetting ratio /
- mechanical properties /
- microstructure

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图 1 不同高度试块的制作过程

Figure 1. Manufacturing process of the blocks with different heights

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图 2 工作层和非工作层试块的制作过程

Figure 2. The production process of working and non-working layer test blocks

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图 3 试块的硬度变化

Figure 3. Hardness changes of blocks

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图 4 试块的微观形貌

Figure 4. Microstructure of blocks

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图 5 胎体的微观形貌^[2,16]

Figure 5. Microstructure of the matrix in reference^[2,16]

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表 1 浸渍合金的主要成分

Table 1. Main components of maceration alloys

浸渍合金	质量分数 ω₁ / %
浸渍合金	Cu	Ni	Mn	Zn	Sn
Cu-Ni-Mn-Zn	余量	0～5	5～10	20～25
Cu-Ni-Mn-Sn	余量	10～15	0～5		0～5

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表 2 工作层试块的浸润比

Table 2. Wetting ratios of working layer blocks with different heights

试块高度 h / mm	$ {m}_{粉} $/ g	$ {m}_{块} $/ g	浸润比 i
55	47.488	59.138	0.25
45	36.832	46.822	0.27
40	32.126	40.910	0.27
35	29.010	36.290	0.25

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表 3 不同浸渍合金试块的浸润比、密度及力学性能

Table 3. Wetting ratios, density and mechanical properties of different maceration alloy blocks

试块性能	浸渍合金
	Cu-Ni-Mn-Zn		Cu-Ni-Mn-Sn
	工作层	非工作层	工作层	非工作层
浸润比 i	0.26	0.49	0.34	0.44
密度 ρ / (g·cm⁻³)	12.205	10.190	12.330	10.079
硬度 HRC	37.4	22.6	39.8	23.1
抗弯强度 σ / MPa	1 050.581	893.413	828.541	756.561
冲击韧性 K_IC / (kJ·m⁻²)	33.76	54.72	31.02	47.42

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表 4 试块的能谱分析结果

Table 4. Results of energy spectrum analysis of blocks

元素	浸渍合金
	Cu-Ni-Mn-Zn						Cu-Ni-Mn-Sn
	工作层元素质量分数 ω₂ / %			非工作层元素质量分数 ω₃ / %			工作层元素质量分数 ω₂ / %			非工作层元素质量分数 ω₃ / %
	A	B	C	D	E	F	A	B	C	D	E	F
Mn		2.98			2.25			1.20	6.10		4.05
Fe					32.31	6.11		19.87	2.97		10.63
Ni		19.66	8.59		12.39	7.69		17.64			9.31
Cu		40.12	18.38		34.43	23.38		58.12	40.52		72.59	40.24
Zn		24.89	15.31		18.62	15.64
Sn									3.09		2.44	1.76
W	100.00	12.35	57.72	100.00		47.18	100.00	3.17	47.31	100.00	0.98	58.00

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表 5 浸渍合金在位置B和位置E的占比结果

Table 5. Maceration alloy percentage results at position B and position E

浸渍合金在位置B和位置E的占比 R / %
Cu-Ni-Mn-Zn		Cu-Ni-Mn-Sn
图4a的工作层	图4b的非工作层	图4c的工作层	图4d的非工作层
19.0	36.0	21.8	35.4

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