熔融石英玻璃无水环境固结磨粒抛光特性

刘文俊; 杨炜; 郭隐彪

doi:10.11884/HPLPB201830.180028

熔融石英玻璃无水环境固结磨粒抛光特性

doi: 10.11884/HPLPB201830.180028

厦门大学航空航天学院，福建厦门 361005

基金项目:

国家科技重大专项 2017ZX04022001-207

福建省引导项目 2017H0036

详细信息

作者简介:
刘文俊(1993—)，男，硕士，从事固结磨粒抛光研究；97591078@qq.com

中图分类号: TH16
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出版历程
- 收稿日期: 2018-01-22
- 修回日期: 2018-04-18
- 刊出日期: 2018-08-15

Characteristic of bounded abrasive polishing for fused silica glass in anhydrous environment

School of Aerospace Engineering, Xiamen University, Xiamen 361005, China

摘要

摘要: 为了克服游离磨粒抛光的随机性、磨料浪费以及产生的水合层等问题，提出了一种无水环境下熔融石英玻璃固结磨粒抛光技术。研究实现了稳定的抛光轮烧结工艺，并应用于熔融石英玻璃抛光加工，通过对加工产物和抛光轮粉末进行EDS能谱分析和XRD衍射分析，从微观上初步阐述了固结磨粒抛光的去除机理；从宏观上探索压力和转速对去除效率和表面粗糙度的影响。实验结果表明：加工过程中，在法向力和剪切力作用下，CeO₂磨粒和熔融石英发生化学反应，CeO₂将SiO₂带出玻璃，实现材料去除；同时，压力和转速对加工效率影响并不遵循Preston公式，温升和排屑成为决定去除效率的关键。
- 固结磨粒抛光 /
- 熔融石英 /
- 粗糙度 /
- 去除率 /
- 烧结工艺
Abstract: In order to overcome the randomness, abrasive waste and hydration layer of free abrasive polishing, a technology of bounded abrasive polishing for fused silica glass under anhydrous environment is proposed. A stable polishing wheel sintering process has been developed and applied to the polishing of fused silica glass. EDS energy spectrum analysis and XRD analysis of the processed products and the polishing wheel powder are carried out. The removal mechanism of consolidation abrasive polishing is preliminarily elaborated, and the effect of pressure and speed on the removal efficiency and surface roughness is explored from the macroscopic point of view. The experimental results show that: in the process, under normal force and shear force, the CeO₂ abrasive reacts with the fused silica, CeO₂ will bring SiO₂ out of the glass, thus to achieve material removal; at the same time, influence of pressure and rotating speed on the processing efficiency does not follow the Preston formula, temperature rise and chip removal of the polishing wheel are the key factors determining the efficiency of removal.
- bounded abrasive polishing /
- fused silica /
- roughness /
- removal rate /
- sintering process

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图 1 抛光轮制作流程图及成型样品

Figure 1. Manufacture process of polishing wheel and a product sample

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图 2 加工装置示意图及简化图

Figure 2. Processing unit diagram and simplified diagram

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图 3 表面粗糙度与材料去除深度的评价方法

Figure 3. Evaluation method for surface roughness and material removal

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图 4 抛光轮粉末能谱图和加工产物残屑能谱图

Figure 4. EDS spectrum images of grinding wheel powder and grinding chips

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图 5 砂轮、磨削屑和熔融石英的XRD分析

Figure 5. XRD analysis of grinding wheel powder grinding chips and fused silica

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图 6 材料去除过程

Figure 6. Material removal process

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图 7 恒压和恒转速的去除深度随加工时间变化关系

Figure 7. Relationship between the removal depth of constant pressure and constant rotating speed with the processing time

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图 8 恒压力和恒转速的粗糙度随加工时间变化关系

Figure 8. Relationship between the roughness of constant pressure and constant rotating speed with the processing time

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图 9 50 kPa, 150 r/min加工条件下的显微镜图和粗糙度检测图

Figure 9. Microscope image and roughness measured under the processing conditions of 50 kPa, 150 r/min

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表 1 实验参数

Table 1. Experimental parameters

No.	downward load /kPa	rotating speed of polishing wheel w₁/(r·min^-1)	rotating speed of sample w₂/(r·min^-1)
1	50	95	105
2	50	145	155
3	50	195	205
4	25	95	105
5	70	95	105

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表 2 砂轮粉和磨削屑的元素质量分数对比

Table 2. Contrast of element fractions of grinding wheel powder and grinding chips

element	fraction of polishing wheel/%	fraction of grinding chips/%
O	32.32	43.98
Al	0.06	0.04
Si	11.42	22.52
Ca	1.85	1.08
Ce	54.34	32.38

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