Method for producing silicon steel normalizing substrate
US9738946B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2012 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Sep 12, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F41/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing a silicon steel normalizing substrate comprises steelmaking, hot rolling and normalizing steps. A normalizing furnace is used in the normalizing step, and along a moving direction of strip steel, the normalizing furnace sequentially comprises: a preheating section, a nonoxidizing heating section, a furnace throat, furnace sections for subsequent normalizing processing, and a delivery seal chamber. Furnace pressures of the normalizing furnace are distributed as follows: the furnace pressure of a downstream furnace section adjacent to the furnace throat along the moving direction of the strip steel is the highest, the furnace pressure decreases gradually from the furnace section with the highest furnace pressure to a furnace section in an inlet direction of the normalizing furnace, and the furnace pressure decreases gradually from the furnace section with the highest furnace pressure to a furnace section in an outlet direction of the normalizing furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.