Low-carbon high-manganese oriented electrical steel plate, and its manufacturing method

A technology of oriented electrical steel sheet and manufacturing method, applied in the direction of manufacturing tools, metal rolling, temperature control, etc., can solve the problems of many process links, high annealing temperature, high heating temperature, etc., and achieve simple cold rolling process, high yield, The effect of reducing the amount of decarburization
CN100436631CInactive Publication Date: 2008-11-26WUHAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV OF SCI & TECH
Publication Date
2008-11-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention deals with the low carbon and the high manganese tropism electric armor plate and the producing process. The technical project is showed as follow: the new steel board embryo is heated to the temperature of 1200-1320, the temperature keeps 2-5 hours; the heat rolling, the quick cooling and the coiling are performed; the thickness of the board reaches below the 0.35mm according to the one cool rolling method; the decarbonization and anneal are performed, the magnesia separating layer is smeared to coiling, finally, the high temperature and the anneal are performed. The chemical elements of the board embryo are showed below: c is 0.004-0.030wt%, Si is 2.1-2.4wt%, Mn is 1.2-1.8wt%, ALs is 0.001-0.04wt%, Nb is 0.01-0.12wt%, N is 0.004_0.030wt%, P is 0.015wt%, the rest is Fe and the unavoidable impurity. The invention has many merits such as the low heating temperature, the low temperature of final anneal, the omitting of the rolling board melting (the anneal), the brief cool rolling process, the low quantity of the decarburization and the high ratio becoming the eligible production.
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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 low-carbon high-manganese oriented electrical steel sheet and a manufacturing method thereof. 2. Background technology

[0002] At present, there are three representative technologies for the industrial production of grain-oriented electrical steel sheets: (1) the secondary cold rolling method with MnS as the main inhibitor; Cold rolling method; (3) secondary cold rolling method using MnS (and / or MnSe)+Sb as inhibitor. In the above three technologies, in order to ensure stable high magnetic properties, the inhibitor must be completely dissolved, and the slab must be heated at high temperature (about 1400°C).

[0003] In the production process of grain-oriented electrical steel, in order to control the recrystallization process and obtain a certain texture, inhibitors are essential. The traditional inhibitors are mainly MnS and AlN. In...

Claims

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