多孔磁性钢渣磨料的制备与性能表征

裴晶晶; 张玉柱; 邢宏伟; 霍文青; 任倩倩

doi:10.13394/j.cnki.jgszz.2022.0058

多孔磁性钢渣磨料的制备与性能表征

doi: 10.13394/j.cnki.jgszz.2022.0058

华北理工大学冶金与能源学院，河北唐山 063210

基金项目: 河北省自然科学基金（E2020209043）；唐山市科技计划项目（21130211C）。

详细信息

作者简介:
裴晶晶，女，1988年生，讲师。主要研究方向：冶金节能与资源优化。E-mail：jjPei@ncst.edu.cn

中图分类号: TF09；TG74
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- 被引次数: 0
出版历程
- 收稿日期: 2022-04-28
- 修回日期: 2022-07-15
- 录用日期: 2022-07-25
- 刊出日期: 2023-04-20

Preparation and characterization of porous magnetic steel slag abrasives

College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China

摘要

摘要: 为有效解决钢渣导致的环境污染、资源浪费等问题，开拓钢渣应用的新领域，结合气淬工艺，以钢渣为主要原料制备多孔磁性钢渣磨料，并利用场发射扫描电镜、高性能全自动压汞仪、磁强计等对钢渣磨料的微观形貌、孔隙结构、磁性能及其力学性能、研磨性能进行表征。结果表明：钢渣磨料呈单分散的球形，其表面和截面内存在圆形或椭圆形排列的无序气孔。磨料样品的孔隙率为37%～45%，孔体积为0.18～0.23 mL/g；在外加磁场作用下，随磨料样品粒径增大，其磁滞回线向顺时针方向偏移，且呈一条狭窄的“S”型封闭曲线；磨料样品表现出典型的亚铁磁性，可有效改善铝合金工件表面质量，加工后工件表面粗糙度R_a由 3.2 µm降至 0.7 µm。
- 多孔 /
- 磁性 /
- 钢渣磨料 /
- 微观结构 /
- 性能表征
Abstract: To effectively solve the problems of environmental pollution and resource waste caused by steel slag and open up a new field of application of steel slag, the porous magnetic steel slag abrasive was prepared by combining the gas quenching process with steel slag as the main raw material. Besides, and the micro-morphology, the pore structure, the magnetic properties, the mechanical properties and the abrasive properties of steel slag abrasive were characterized by field emission scanning electron microscope, high-performance automatic mercury porosimeter, magnetometer, etc. The results show that the steel slag abrasive is monodisperse spherical, and there are disordered pores arranged in round or elliptical shape on its surface and cross section. The porosity of abrasive sample is 37% to 45%, and the pore volume is 0.18 to 0.23 mL/g. Under the action of external magnetic field, with the increase of the particle size of the abrasive sample, its hysteresis loop shifts clockwise and presents a narrow “S” type closed curve. The abrasive sample shows typical ferrous magnetism, which can effectively improve the surface quality of aluminum alloy workpiece, and the surface roughness R_a of the workpiece is reduced from 3.2 µm to 0.7 µm.
- porous /
- magnetism /
- steel slag abrasives /
- microstructure /
- performance characterization

HTML全文

图 1 气淬法制备样品的工艺流程图

Figure 1. Process flow chart of sample by gas quenching method

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图 2 研磨试验原理

Figure 2. Grinding test principle

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图 3 样品的形貌及EDS分析结果

Figure 3. Sample morphology and EDS analysis results

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图 4 样品的截面照片

Figure 4. Cross-section images of sample

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图 5 样品的孔径分布积分及微分曲线

Figure 5. Pore distribution integral and differential curves of samples

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图 6 样品的磁滞回线

Figure 6. Hysteresis loops of sample

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图 7 铝合金工件的SEM图

Figure 7. SEM images of aluminum alloy

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图 8 铝合金工件的三维显微形貌图

Figure 8. Three-dimensional topography of aluminum alloy

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表 1 钢渣磨料微孔参数

Table 1. Micropore parameters of sample

参数 D1 D2 D3 D4

磨料粒径 d₂ / μm >300 150～300 80～150 <80
孔体积 V /（mL·g⁻¹） 0.18 0.20 0.22 0.23
孔隙率 γ / % 37 42 43 45

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