| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Characterization of Minerals, Metals and Materials 2025: In-Situ Characterization Techniques
|
| Presentation Title |
Evaluation of Porosity Distribution in Continuously-Cast Thick Slabs by Using Ultrasonic Technology |
| Author(s) |
Xin Li, Yunfei Wei, Yang Liu, Cuihong Xie, Jing Zhao, Hucheng Zhang |
| On-Site Speaker (Planned) |
Xin Li |
| Abstract Scope |
The paper highlights the method made in ultrasonic technology in evaluating the continuously cast slabs with respect to its internal quality. The accuracy and reliability of the ultrasonic method are verified by using the gravity method. The effect of cooling method, casting speed and superheat of steel on porosity defects was investigated. The results showed that serious porosity defects exist in the 1/2 thickness and 1/4 width of the slab, and the ultrasonic values of defects are distributed in an M-shape in the width direction. Uniform cooling has an advantage effect on improving porosity defects, and the maximum ultrasonic value of porosity defects decreases from 100% to 73%. As the casting speed increases from 0.8m/min to 1.0m/min, the maximum ultrasonic value of porosity defects increases from 40% to 80%. With the superheat is increases from 10~20℃ to 20~30℃and 30~40℃, the maximum ultrasonic value of porosity defects increases from 54%, to 63% and 65%, respectively.
Keywords: Ultrasonic technology, Porosity defects, slab, Continues casting |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Iron and Steel, Solidification, Characterization |