Casting Blanks Cleanliness Evaluation Based on Ultrasonic Microscopy and Morphological Filtering
Abstract
:1. Introduction
2. Materials and Ultrasonic Detection
2.1. Test Specimen Preparation
2.2. Ultrasonic Equipment and Detection Parameters
3. Theory of Mathematical Morphology
3.1. Structure Element of Morphology
3.2. Operations of Morphology
3.3. Simulation Experiment of Morphology
3.4. Morphology Filtering of Ultrasonic Images
4. Detection Results and Discussion
4.1. Comparison of Blanks Cleanliness from Different Strands
4.2. Comparison of the Inclusions Size Distribution of the Specimens in Each Strand
4.3. Comparison with the Results Obtained by Metallographic Method
5. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Probe Frequency | Focal Column Diameter | Focal Column Length | Inspection Resolution | Scanning Step | Thickness of Each Layer Tested | Inspection Layers | Total Inspection Thickness |
---|---|---|---|---|---|---|---|
100 MHz | 40 μm | 106 μm | 30 μm | 20 μm | 200 μm | 16 | 3200 μm |
Line SE | Triangular SE | Circular SE | |
---|---|---|---|
Closed operation | |||
Open operation |
Method | Percentage (%) |
---|---|
LSCM | 0.162 |
Ultrasonic Microscope | 0.198 |
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Ding, H.; Qian, Q.; Li, X.; Wang, Z.; Li, M. Casting Blanks Cleanliness Evaluation Based on Ultrasonic Microscopy and Morphological Filtering. Metals 2020, 10, 796. https://doi.org/10.3390/met10060796
Ding H, Qian Q, Li X, Wang Z, Li M. Casting Blanks Cleanliness Evaluation Based on Ultrasonic Microscopy and Morphological Filtering. Metals. 2020; 10(6):796. https://doi.org/10.3390/met10060796
Chicago/Turabian StyleDing, Heng, Qingting Qian, Xue Li, Zhu Wang, and Min Li. 2020. "Casting Blanks Cleanliness Evaluation Based on Ultrasonic Microscopy and Morphological Filtering" Metals 10, no. 6: 796. https://doi.org/10.3390/met10060796