Abstract
The effects of the difference of the heat flux between the wide face and narrow face of the mould, the mould taper, casting speed and cooling rate on unevenness of hypo-peritectic steel at the off-corner in the mould, which leads to longitudinal cracking, bleeding and breakout during continuous casting, were evaluated by a finite element model (FEM) simulation and a plant test with a commercial continuous caster. The simulation results show that an increase in the difference in the heat flux between the wide and narrow face increases the off-corner unevenness of solidification because the solidified shell on the low heat flux side is pulled toward the high heat flux side. The analysis results were in good agreement with the plant test results. These results revealed the importance of optimizing the heat flux ratio between the wide face and narrow face mould even under a high casting speed condition.
| Original language | English |
|---|---|
| Pages (from-to) | 845-859 |
| Number of pages | 15 |
| Journal | Ironmaking and Steelmaking |
| Volume | 49 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2022 |
Keywords
- Continuous casting
- FEM analysis
- air gap
- heat flux different between wide face and narrow face of mould
- longitudinal crack
- mould taper
- uneven solidification
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry