硫酸钙晶须增强的树脂磨片磨削性能

林江程

doi:10.13394/j.cnki.jgszz.2022.0223

硫酸钙晶须增强的树脂磨片磨削性能

doi: 10.13394/j.cnki.jgszz.2022.0223

林江程

泉州众志新材料科技有限公司, 福建泉州 362000

详细信息

作者简介:
林江程，男，1983年生，工程师。主要研究方向：树脂超硬材料磨具。E-mail：linjiangcheng@163.com

中图分类号: TQ164; TG58; TG74
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- 被引次数: 0
出版历程
- 收稿日期: 2022-12-19
- 修回日期: 2023-02-02
- 录用日期: 2023-02-10
- 网络出版日期: 2023-02-24
- 刊出日期: 2023-08-30

Grinding performances of resin grinding tablets reinforced by calcium sulfate whiskers

LIN Jiangcheng

Quanzhou Zhongzhi New Material Technology Co., Ltd., Quanzhou 362000, Fujian, China

摘要

摘要:
为探究硫酸钙晶须增强填料对树脂结合剂磨片的增强效果，采用热压成形方法制备实验样条及树脂磨片，探究不同晶须长度和质量分数对样条硬度、抗弯强度及微观结构的影响，并研究磨片对人造花岗石的磨削性能。结果表明：晶须质量分数不变，随着晶须长度增加，样条的抗弯强度降低，硬度基本保持不变；晶须长度不变，随着晶须质量分数增加，样条的抗弯强度呈先增加后基本不变的趋势；使用磨片对人造花岗石进行磨削，当硫酸钙晶须的长度为10～60 μm，质量分数为10%时，树脂磨片具有最优的耐磨度1.973 min/%，同时具有良好的锋利度76.8 cm³/min。
- 硫酸钙晶须 /
- 树脂结合剂 /
- 金刚石磨片 /
- 抗弯强度 /
- 耐磨性
Abstract:
To investigate the strengthening effect of calcium sulfate whiskers as a reinforcing filler for resin grinding tablets, experimental splines and resin grinding tablets were prepared by the hot pressing method. The effects of different whisker lengths and mass fraction on the hardness, bending strength and microstructures of the splines were examined, and the grinding performances of the grinding tablets on artificial granite were studied. The results show that when the mass fraction of the whisker is constant, the bending strength of the spline decreases with the increase of the whisker length, while the hardness remains relatively unchanged. One the other hand, when the whisker length keeps constant, the bending strength of the spline shows a trend of increasing and then decreasing with the increase of the whisker mass fraction. Using the grinding tablet to grind artificial granite, the best abrasion resistance of 1.973 min/% and good sharpness of 76.8 cm³/min are achieved when the length of calcium sulfate whisker ranges from 10 to 60 μm and the mass fraction is 10%.
- calcium sulfate whisker /
- resin binder /
- diamond grinding tablet /
- bending strength /
- abrasion resistance

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图 1 树脂磨片

Figure 1. Resin grinding tablet

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图 2 金刚石微粉的显微图片

Figure 2. Micrographs of diamond powder

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图 3 自制磨片机

Figure 3. Self-made grinding tablet machine

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图 4 不同晶须种类下树脂样条的抗弯强度

Figure 4. Bending strength of resin splines with different whisker types

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图 5 不同晶须质量分数下树脂样条的抗弯强度

Figure 5. Bending strength of resin splines with different whisker mass fractions

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图 6 不同晶须种类下的树脂样条硬度

Figure 6. Hardness of resin splines with different whisker types

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图 7 不同晶须质量分数下树脂样条的硬度

Figure 7. Hardness of resin splines with different whisker mass fractions

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图 8 酚醛树脂粉粒度范围曲线

Figure 8. Size range curve of phenolic resin powder

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图 9 硫酸钙晶须的扫描电镜形貌

Figure 9. SEM morphology of calcium sulfate whiskers

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图 10 压制的样条断面扫描电镜形貌

Figure 10. SEM morphology of pressed spline section

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图 11 树脂磨片的磨削表面形貌

Figure 11. Grinding surface morphology of resin grinding tablet

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图 12 4#配方样条中的钙元素面扫描分布图

Figure 12. Surface scanning distribution diagram of calcium element in 4# formula spline

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图 13 不同型号晶须树脂磨片的锋利度及耐磨度

Figure 13. Sharpness and abrasion resistance of resin grinding tablets with different types of whiskers

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图 14 不同晶须质量分数时的树脂磨片的锋利度及耐磨度

Figure 14. Sharpness and abrasion resistance of resin grinding tablets with different whisker mass fractions

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表 1 硫酸钙晶须的尺寸

Table 1. Sizes of calcium sulfate whisker

硫酸钙晶须型号	长度 l / µm	直径 d / µm
1	10～300	1～15
2	10～150	1～8
3	10～100	1～10
4	10～60	1～10

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表 2 样品配比表

Table 2. Sample formula table

样条及磨片编号	硫酸钙晶须型号	树脂质量分数 M₁ / %	金刚石质量分数 M₂ / %	碳化硅F240 质量分数 M₃ / %	碳化硅J3000 质量分数 M₄ / %	硫酸钙晶须质量分数 M₅ / %
0#		70	5	5	20	0
1#	1	50	5	5	20	20
2#	2	50	5	5	20	20
3#	3	50	5	5	20	20
4#	4	50	5	5	20	20
5#	4	65	5	5	20	5
6#	4	60	5	5	20	10
7#	4	55	5	5	20	15
8#	4	40	5	5	20	30

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表 3 自制磨片机参数

Table 3. Parameters of self-made grinding tablet machine

参数	取值
磨削时间 t / min	10
转机转速 n /（r·min⁻¹）	1 900
磨头压力 p / MPa	1
磨头走速 v /（m·s⁻¹）	0.02

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表 4 实验仪器设备具体参数

Table 4. Specific parameters of experimental instruments and equipments

仪器名称	型号	厂家
万能试验机	SANS	美特斯工业系统（中国）有限公司
场发射扫描电子显微镜	Nova Nano SEM 230	科视达（中国）有限公司
激光粒度分析仪	BT-9300H	丹东市百特仪器有限公司
百特图像颗粒分析仪	BT-1600	丹东市百特仪器有限公司
洛氏硬度计	HR-150A	莱州华银实验仪器有限公司
油压机	MYS-200T	郑州磨料磨具磨削研究所有限公司
3D超景深显微镜	VHS-S650E	基恩士（中国）有限公司

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表 5 硫酸钙晶须长度与树脂粉D₅₀比值

Table 5. Ratio of calcium sulfate whisker length to resin powder D₅₀

硫酸钙晶须型号	比值 R
1	0.45～13.53
2	0.45～6.77
3	0.45～4.51
4	0.45～2.71

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