ICRF 2026 - 5th International Conference on INGOT CASTING, ROLLING & FORGING

Controlling A‑Segregation in a 100‑Ton Hollow Steel Ingot via Liquid Nitrogen‑Air Core Cooling

13 Oct 2026, 15:20

20m

Lilium+Iris room (Hotel Caesius Thermae & Spa Resort)

Oral Presentation Rolling, Forging & Hot Deformation I

Speaker

Paixian Fu (Institute of Metal Research, Chinese Academy of Sciences)

Description

The solidification of a 100 ton hollow steel ingot was simulated. In this approach the heat transferring into the core was extracted by a flow of fluid consisting of a mixture of liquid nitrogen and air. The heat transfer between the core and the casting was studied and found to depend on the engineering design of the core, the proportion of gases in the mixture, and the rate of flow. A solution was developed that achieved the end of solidification throughout the ingot located almost in the center of the wall thickness, and the A-segregation defects were avoided.