Scholarlink

The paper highlights the method made in ultrasonic technologyUltrasonic technology in evaluating the continuously cast slabsSlab with respect to their internal quality. The accuracy and reliability of the ultrasonic method are verified by using the gravity method. The effect of the cooling method, casting speed and superheat of steelSteel on porosity defectsPorosity defects was investigated. The results showed that serious porosity defectsPorosity defects exist in the 1/2 thickness and 1/4 width of the slabSlab, and the ultrasonic values of defects are distributed in an M-shape in the width direction. Uniform cooling has an advantageous effect on improving porosity defectsPorosity defects, and the maximum ultrasonic value of porosity defectsPorosity defects decreases from 100 to 73%. As the casting speed increases from 0.8 to 1.0 m/min, the maximum ultrasonic value of porosity defectsPorosity defects increases from 40 to 80%. With the superheat increases from 10–20 ℃ to 20–30 ℃ and 30–40 ℃, the maximum ultrasonic value of porosity defectsPorosity defects increases from 54 to 63% and 65%, respectively.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Evaluation of Porosity Distribution in Continuously Cast Thick Slabs by Using Ultrasonic Technology

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Xin Li,
  • Yunfei Wei,
  • Yang Liu,
  • Cuihong Xie,
  • Jing Zhao,
  • Hucheng Zhang

摘要

The paper highlights the method made in ultrasonic technologyUltrasonic technology in evaluating the continuously cast slabsSlab with respect to their internal quality. The accuracy and reliability of the ultrasonic method are verified by using the gravity method. The effect of the cooling method, casting speed and superheat of steelSteel on porosity defectsPorosity defects was investigated. The results showed that serious porosity defectsPorosity defects exist in the 1/2 thickness and 1/4 width of the slabSlab, and the ultrasonic values of defects are distributed in an M-shape in the width direction. Uniform cooling has an advantageous effect on improving porosity defectsPorosity defects, and the maximum ultrasonic value of porosity defectsPorosity defects decreases from 100 to 73%. As the casting speed increases from 0.8 to 1.0 m/min, the maximum ultrasonic value of porosity defectsPorosity defects increases from 40 to 80%. With the superheat increases from 10–20 ℃ to 20–30 ℃ and 30–40 ℃, the maximum ultrasonic value of porosity defectsPorosity defects increases from 54 to 63% and 65%, respectively.