Title:
方向性電磁鋼帯を製造する方法
Document Type and Number:
Japanese Patent JP5005873
Kind Code:
B2
Abstract:
In the production of electrical steel strips, a special islab-reheating treatment before hot rolling is carried out so that the maximum temperature within the furnace is reached by the slab well before its extraction from the furnace. During the heating stage and performance at the highest temperatures of the thermal cycle, second phase particles are dissolved and segregated elements are distributed in the metallic matrix, while during cooling and temperature equalising steps of the slab in the furnace a controlled amount of small second phases particles are more homogeneously re-precipitated from the metallic matrix. Differently from all the conventional processes for the production of electrical steels, the slab reheating furnace become a site in which it is performed the precipitation of a controlled amount of second phases particles for the necessary grain growth control during the successive process steps.
Inventors:
Stefano Fortunati
Stefano Chicare
Claudia Rocky
Giuseppe Abbruzzese
Stefano Chicare
Claudia Rocky
Giuseppe Abbruzzese
Application Number:
JP2002517854A
Publication Date:
August 22, 2012
Filing Date:
August 08, 2001
Export Citation:
Assignee:
ThyssenKrupp Atchiai Specialia Terni Societa Peratini
International Classes:
C21D8/12
Domestic Patent References:
| JP8143962A | ||||
| JP7224325A | ||||
| JP10273727A | ||||
| JP8213225A | ||||
| JP7300621A |
Attorney, Agent or Firm:
Kenji Sugimura
Yuta Terashima
Kosaku Sugimura
Yuta Terashima
Kosaku Sugimura