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, This paper is divided into four parts of the deformation behavior of non-oriented electrical steel and annealing treatment on microstructure and properties of electrical steel production process according to the Lianyuan Iron and Steel Company needs. The first part of the Gleeble-1500 thermal simulator of non-oriented electrical steel temperature and constant strain hot compression experiments to study the non-oriented electrical steel alloy hot deformation behavior of flow stress and microstructural evolution, and to establish a mathematical model of the flow stress . The second part of the test and inspection equipment (Epstein) Expertise accuracy, in particular, in nonstandard Epstein, evaluating the results, the theoretical basis for the subsequent detection of magnetic energy. The third part examines the material microstructure and magnetic variation of different annealing parameters conditions, to determine the reasonable, energy-efficient annealing process. The fourth part of the main research oriented electrical steel type inclusions and the material microstructure and magnetic properties of the experimental materials. Experimental study, the following conclusions: 1) contains the temperature and activation energy Q hyperbolic sine form of the Arrhenius relationship model, calculated cast sample with high temperature rheological parameters of the hot-rolled sample calculation results can be very good, consistent with the experimental data. Hyperbolic sine form of the Arrhenius relation model can be used to calculate the the thermoplastic flow stress of the non-oriented electrical steel. Constitutive equation of the semi-process silicon steel casting and rolling sample hot-rolled sheet sample both sub-build. Casting and rolling slab 500 ° C -800 ° C when the stress level factor alpha = 0.039MPa -1 , stress exponent n = 7.93, the structure factor A = 42.1s -1 , hot deformation activation energy Q = 334.8kJ/mol; 950 ° C -1200 ° C when the stress level factor alpha = 0.1258MPa -1 , stress exponent n = 5.29, the structure factor A = 42.1s -1 , hot deformation activation energy Q = 769.9kJ/mol. The Slab 500 ° C -800 ° C temperature ranges of alpha = 0.037MPa -1 , n = 9.37, A = 41.1s -1 , Q = 329kJ/mol,: 900 ° C -1100 ° C temperature ranges, alpha = 0.106MPa -1 , n = 5.97, A = 43.5s -1 , Q = 505.8kJ/mol,. 2) in accordance with the national standard (GB / T 3655-92) sampling in TYU-2000M silicon steel automatic measuring device, Epstein square circle can determine the magnetic properties of the semi - processed electrical steel, precise results. 3) semi-process and electrical steel sheet heating process, in addition to the occurrence of alpha-Fe recovery, recrystallization and grain growth, but also accompanied with the α-Fe ← → γ-Fe phase change, as well as the dissolution of the soluble phase of AlN and MnS and precipitation. Can be obtained by controlling the grain size and uniformity of orientation of the favorable texture and reduce the density of dislocations excellent magnetic properties. Rapid heating insulation of the production process as compared to the high-temperature annealing and a short time is conducive to energy-saving, excellent magnetic non-oriented electrical sheet. 4) in the α-Fe ← → γ-Fe phase below the transition temperature with increasing annealing temperature, {111} <112>, the volume decreased, the {001} <100> texture and Gaussian texture content increases; The phase transition temperature higher than the α-Fe ← → γ-Fe, {111} <112> and {111} <110> texture content, Gaussian texture and {001} <100> texture content are slightly reduced, temperature {111} <112> and {111} <112> content will be significantly increased, the Gaussian decreased. A heating rate of increase in the {1111} <112> and {111} <112> decreased, Gaussian texture content increased. 5) electrical steel of the second half of the trial process in general is pure, inclusions mainly the granular Al 2 O 3 and containing SiO 2 CaO, FeO, the Fe 2 O 3 , MnS, the Al 2 O 3 composite inclusions. Component caused by the presence of inclusions and Organizations unevenness. Therefore, under the premise to ensure the purity of the material, the use of reasonable heat treatment process system, the use of phase change to control the grain size, grain uniformity, texture orientation and density, dislocation density, the control phase to obtain a favorable precipitation excellent magnetic properties of non-oriented silicon steel sheet.
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