Process for the production of semi-finished articles of hard steels using a continuous casting operation
US4617067A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 6, 1981 |
| Grant date | Oct 14, 1986 |
| Priority date | — |
| Expiry date | Aug 6, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/40
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention is directed to a continuous casting process for the production of semi-finished articles or blanks of hard steels such as bars, wires or tubes having a carbon content higher than 0.75%. In this process, the blank obtained by continuous casting is submitted to a secondary cooling under the mold, cut and within three minutes after cutting, introduced into a reheating furnace in which its temperature is brought to a level slightly lower than the solidus temperature, maintained for a short period, and finally elongated in the hot condition. In a preferred embodiment, the liquid steel is stirred during the continuous casting operation by means of magnetic fields induced in the steel by electromagnetic coils disposed around the blank thereby facilitating dissolution of carbides contained within the liquid steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.