Sheet slab process low-carbon high-manganese oriented electrotechnical steel sheet, and its manufacturing method

A technology of oriented electrical steel sheets and manufacturing methods, applied in the direction of manufacturing tools, metal rolling, temperature control, etc., can solve the problems of high heating temperature, many process steps, high annealing temperature, etc., and achieve low heating temperature, high quality, and final high temperature The effect of lowering the annealing temperature
CN1891844AInactive Publication Date: 2007-01-10WUHAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV OF SCI & TECH
Publication Date
2007-01-10
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a manufacture method for sheet bar technology low carbon high manganese orientating electric steel sheets and strips. The method includes the following steps: the thickness of sheet bar technology is 50-150mm, and the chemistry constituents are: C 0.002-0.03wt%, Si is 2.1-2.4wt%, Mn is 1.2-1.8wt%, Al is 0.001-0.04wt%, Nb is 0.01-0.12wt%, N is 0.004-0.012wt%, P is below 0.015wt%, and the rest is Fe and other impurity, the inhibitor is AlN and Nb(C, N); heating the sheet bar to 1150-1300 degree centigrade and keeping for 2-5 hours to take hot rolling, fast cooling and coiling; rolling the sheet to the thickness below 0.35mm by once cold rolling process; taking decarburizing annealing, coating magnesia isolating layer, punching, high annealing. The invention adopts once cold rolling process, lower heating temperature and final high annealing temperature. The orientating electric steel sheets and strips has low cost and low iron loss.
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Description

1. Technical field:

[0001] The invention belongs to the technical field of oriented electrical steel plates. In particular, it relates to a method for manufacturing a low-carbon high-manganese oriented electrical steel sheet by thin slab technology. 2. Background technology

[0002] For thin slab continuous casting machines, the cooling intensity is high and the cooling speed is fast. The oxides, sulfides and nitrides precipitated during rapid solidification are fine. The experimental research of Hou Teng Yugui et al. shows that when rapid solidification occurs, the oxides, sulfides and nitrides are small in size (Hou Teng Yugui et al.: Precipitation characteristics of oxides in steel during rapid solidification, Iron and Steel, 1997, vol.83, No. .12, p.61. Zhou Deguang, Fu Jie, Wang Zhongbing, Li Jing, Xu Zhongbo, Liu Delu, Kang Yonglin, Chen Guijiang, Li Liejun: As-Cast Microstructure Characteristics of CSP Thin Slab, 2002 Thin Slab Casting and Rolling International Sem...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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