Grinding characteristics and removal mechanisms of unidirectional carbon fibre reinforced silicon carbide ceramic matrix composites

Qu, Shuoshuo; Gong, Yadong; Yang, Yuying; Wen, Xuelong; Yin, Guoqiang

doi:10.1016/j.ceramint.2018.10.178

Cited by 45 publications

(19 citation statements)

References 28 publications

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“…Material of the workpiece is ceramic magnet ferrite with a dimension of 50 mm length, 23 mm width and 2.3 mm thickness. The types of ferrite magnets are Strontium ferrite SrO6 (Fe2O3) with density 4.85 ± 0.01 g/cm 3 and Hardness (HV): 826 ± 10 12,13) .…”

Section: Methodsmentioning

confidence: 99%

“…Grinding process uses a special grinding machine which was designed by the factory to grind ferrite magnet directly as it comes from the mold, the machine works sequentially with a conveyor feeding system. The workpiece enters in the initial dimension called raw material and passes the stage of the grinding position 3,4) . Until it gets the desired dimension, the grinding process starts at position 1 and position 2, i.e.…”

Section: Grinding Process Flowmentioning

confidence: 99%

“…The use of electroplated super abrasive grinding wheels for grinding ferrite ceramic material was chosen because it has several advantages such as high material removal ability and ability to grind on complex profile shapes 1) . In ordinary production process, an electroplated grinding wheel type is used to grind ferrite magnet workpieces but the results are not in accordance with the target, many cracks occur on workpieces so that many ferrite magnet products are rejected 2,3) .…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Abrasive Grain Shapes on Quality of Ferrite Magnets Grinding Process

Saputro

Suhadi

2023

Majalah Ilmiah Pengkajian Industri

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AbstractÂ A research was conducted on the grinding process of ferrite magnet with Strontium ferrite type (SrO.6 (Fe2O3)) using electroplated single layer grinding wheels. Many cracks have been found on work pieces during this work, which is coming from grinding processes. Research is conducted starting from chemical composition test and the effect of the shape and size of the abrasive grain of grinding wheels to the quality of grinding process results by measuring crack ratio of the work piece.Â In this experiment, 3 (three) model design of grinding wheels with three different size and shape of abrasive grains are made. All of processing parameters are set at the same value as ordinary process.Â The experimental results shown that 3rd model have the best results from the outputs number and also the lowest reject crack ratio compared to 1st and 2nd models. This is because the 3rd model has blocky shape which its distribution structure is denser and more uniform compared to the irregular shape, so that continuous grinding on hard and brittle work pieces is more stable and suitable

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Section: Methodsmentioning

confidence: 99%

Section: Grinding Process Flowmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The Effect of Abrasive Grain Shapes on Quality of Ferrite Magnets Grinding Process

Saputro

Suhadi

2023

Majalah Ilmiah Pengkajian Industri

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“…This is probably due to the increased mass transfer because of the presence of B 4 C and the removal of the silica layer by carbon. [61][62][63][64][65] But this amount of carbon does not seem to be enough to reach the highest density. In the A7, A15 and A23 samples, an increase in carbon of up to 2.5 wt% further increased the density to 98.5%.…”

Section: Density and Porosity Of Samplesmentioning

confidence: 99%

Mechanical properties of SiC‐C‐B₄C composites with different carbon additives produced by pressureless sintering

Kozekanan

Moradkhani

Baharvandi

et al. 2021

Int J Applied Ceramic Tech

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In this research, carbon sources (Resin Phenolic, Carbon Black and Graphite) and Boron Carbide (B 4 C) were used to improve the mechanical properties of Silicon Carbide (SiC) composite. For this purpose, carbon sources of 0.5, 0.75, 1, 1.5, 2, 2.5, 3, and 5 wt% as well as 0.5 wt% B 4 C were added to SiC powder, respectively.The sample containing SiC-2.5 wt% Resin Phenolic-0.5 wt% B 4 C had the best properties with relative density, hardness, and fracture toughness values of 98.5%, 2820 GPa, and 3.9 MPa.√m, respectively. Examination of SEM images showed that by increasing carbon from 0.5 to 2.5 wt%, the fracture changes from intergranular to transgranular.

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“…For composites grinding, 3D surface profile characterization was more comprehensive and scientific than traditional roughness characterization [19][20][21]. It was found that fiber orientation and grinding parameters were the significant influence factors of composites grinding, which had important effect on grinding force and surface quality [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Effect of fiber orientation on surface microscopic characteristics of surface grinding of unidirectional C/SiC composites

Zhang

Wang

Huo

et al. 2019

Materialwissenschaft Werkst

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Ceramic matrix composites have complex structures. For exploring the impact factors of machined surface quality and material removal mechanism, its internal structure must be decoupled, and then a unidirectional C/SiC composite was designed and fabricated in this paper. Through a series of representative surface grinding experiments, the machined surface of the composites was characterized by 3D profile test, and the microscopic characteristics and material removal mechanism of the grinding surface were discussed in detail. The results showed that the fiber orientation had a significant effect on the surface quality, and the order of 3D surface roughness was longitudinal > normal > transverse. On the basis of the systematic analysis of the microscopic characteristics of the machined surface, the brittle fracture was the dominant form of material removal in grinding process. Further, combined with 3D surface profile and surface micromorphology, the effect of fiber orientation on the removal mechanism of composites was revealed. The results not only enrich the machinability and improve the surface quality of unidirectional C/SiC composites, but also provide some guidance for grinding of the woven composites.

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Grinding characteristics and removal mechanisms of unidirectional carbon fibre reinforced silicon carbide ceramic matrix composites

Cited by 45 publications

References 28 publications

The Effect of Abrasive Grain Shapes on Quality of Ferrite Magnets Grinding Process

The Effect of Abrasive Grain Shapes on Quality of Ferrite Magnets Grinding Process

Mechanical properties of SiC‐C‐B₄C composites with different carbon additives produced by pressureless sintering

Effect of fiber orientation on surface microscopic characteristics of surface grinding of unidirectional C/SiC composites

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Grinding characteristics and removal mechanisms of unidirectional carbon fibre reinforced silicon carbide ceramic matrix composites

Cited by 45 publications

References 28 publications

The Effect of Abrasive Grain Shapes on Quality of Ferrite Magnets Grinding Process

The Effect of Abrasive Grain Shapes on Quality of Ferrite Magnets Grinding Process

Mechanical properties of SiC‐C‐B4C composites with different carbon additives produced by pressureless sintering

Effect of fiber orientation on surface microscopic characteristics of surface grinding of unidirectional C/SiC composites

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Mechanical properties of SiC‐C‐B₄C composites with different carbon additives produced by pressureless sintering