Abstract: A manufacturing method for low-magnetostrictive oriented silicon steel is provided, wherein the oriented silicon steel comprises a silicon steel substrate and an insulating coating on the surface of the silicon steel substrate. The manufacturing method comprises: performing single-sided laser etching on the silicon steel substrate, wherein the side of the silicon steel substrate, on which single-sided laser etching is performed, is a first surface, and the side opposite to the first surface is a second surface; determining a deflection difference between the first surface and the second surface based on the power of the laser etching, and determining a difference in the amount of the insulating coatings on the first surface and the second surface based on the deflection difference; and forming insulating coatings on the first surface and the second surface.

Abstract: The present invention discloses a Cu-containing non-oriented electrical steel plate having high cleanliness, comprising the following chemical elements in percentage by mass: 0<C?0.003%; Si: 0.1-2.0%; Mn: 0.1-0.55%; S: 0-0.004%; Cu: 0.003-0.2%; Al: 0.1-1.0%; and the balance being Fe and inevitable impurities. In addition, the present invention further discloses a continuous annealing process for the Cu-containing non-oriented electrical steel plate having high cleanliness. Moreover, the present invention further discloses a manufacturing method for Cu-containing non-oriented electrical steel plate having high cleanliness, including the steps of: smelting and casting; hot rolling; normalizing; cold rolling; performing the continuous annealing process; and applying an insulation coating to obtain a finished non-oriented electrical steel plate. The Cu-containing non-oriented electrical steel plate having high-cleanliness is high in cleanliness and excellent in magnetic performance.

Abstract: The present invention discloses a non-oriented electrical steel plate, comprising the following chemical elements in percentage by mass: 0<C?0.003%; Si: 1.6-3.4%; Mn: 0.1-1.2%; S?0.003%; Al: 0.1-3.0%; Sn: 0.005-0.2%; Ca: 0.0005-0.01%; O?0.003%; N?0.003%; and the balance being Fe and inevitable impurities. In addition, the present invention further discloses a manufacturing method for the above non-oriented electrical steel plate, including the steps of: smelting and casting; hot rolling; intermediate annealing; cold rolling; continuous annealing; and applying an insulation coating to obtain a finished non-oriented electrical steel plate. The non-oriented electrical steel plate is excellent in magnetic property.

Abstract: A heat-resistant magnetic domain refined grain-oriented silicon steel, a single-sided surface or a double-sided surface of which has several parallel grooves which are formed in a grooving manner, each groove extends in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel, and the several parallel grooves are uniformly distributed along the rolling direction of the heat-resistant magnetic domain refined grain-oriented silicon steel. Each groove which extends in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel is formed by splicing several sub-grooves which extend in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel.

Abstract: Disclosed is a manufacturing method for a high silicon grain oriented electrical steel sheet, the silicon content of the high silicon grain oriented electrical steel is greater than 4 wt %, comprising the steps of: (1) performing decarburization annealing of a cold-rolled steel plate; (2) allowing high silicon alloy particles in a completely solid state to collide at a high speed with the surface of the decarburization annealed steel plate to be sprayed, thus forming a high silicon alloy coating on the surface of the steel plate to be sprayed; (3) coating a release agent and drying; and (4) annealing. The manufacturing method for the high silicon grain oriented electrical steel sheet of the present invention is inexpensive, and, the high silicon grain oriented electrical steel sheet produced is of stable quality and is provided with great magnetic performance.

Abstract: Disclosed is a non-oriented electrical steel sheet with low magnetic anisotropy, which comprises the following chemical elements in mass percentage: 0<C?0.005%; Si: 2.0-3.5%; Mn: 0.1-2.0%; at least one of Sn and Sb: 0.003-0.2%; Al: 0.2-1.8%; the balance being Fe and inevitable impurities. Further disclosed is a manufacturing method for the above non-oriented electrical steel sheet with low magnetic anisotropy, which includes the following steps: (1) smelting and casting; (2) hot rolling; (3) normalizing; (4) cold rolling; (5) continuous annealing: rapidly heating a cold-rolled steel sheet from an initial temperature of 350° C.-750° C. to a soaking temperature at a heating rate of 50-800° C./s, and performing soaking and heat preservation; and (6) applying an insulating coating to obtain a finished non-oriented electrical steel sheet. The non-oriented electrical steel sheet is characterized by low iron loss and low magnetic anisotropy at high frequency.

Abstract: Disclosed is a method for manufacturing stress-relief-annealing-resistant, low-iron-loss grain-oriented silicon steel, the method comprising: carrying out, by means of a pulse laser, scanning grooving on a single surface or two surfaces of a silicon steel sheet after cold rolling, or after decarburizing annealing, or after high temperature annealing or after hot stretching, temper rolling and annealing, and forming several grooves parallel with each other in a rolling direction of the silicon steel sheet, wherein a single pulse time width of the pulse laser is 100 ns or less, and a single pulse peak energy density is 0.

Abstract: Disclosed is a manufacturing method for a high silicon grain oriented electrical steel sheet, the silicon content of the high silicon grain oriented electrical steel is greater than 4 wt %, comprising the steps of: (1) performing decarburization annealing of a cold-rolled steel plate; (2) allowing high silicon alloy particles in a completely solid state to collide at a high speed with the surface of the decarburization annealed steel plate to be sprayed, thus forming a high silicon alloy coating on the surface of the steel plate to be sprayed; (3) coating a release agent and drying; and (4) annealing. The manufacturing method for the high silicon grain oriented electrical steel sheet of the present invention is inexpensive, and, the high silicon grain oriented electrical steel sheet produced is of stable quality and is provided with great magnetic performance.

Abstract: A heat-resistant magnetic domain refined grain-oriented silicon steel, a single-sided surface or a double-sided surface of which has several parallel grooves which are formed in a grooving manner, each groove extends in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel, and the several parallel grooves are uniformly distributed along the rolling direction of the heat-resistant magnetic domain refined grain-oriented silicon steel. Each groove which extends in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel is formed by splicing several sub-grooves which extend in the width direction of the heat-resistant magnetic domain refined grain-oriented silicon steel.

Abstract: Disclosed is a method for manufacturing stress-relief-annealing-resistant, low-iron-loss grain-oriented silicon steel, the method comprising: carrying out, by means of a pulse laser, scanning grooving on a single surface or two surfaces of a silicon steel sheet after cold rolling, or after decarburizing annealing, or after high temperature annealing or after hot stretching, temper rolling and annealing, and forming several grooves parallel with each other in a rolling direction of the silicon steel sheet, wherein a single pulse time width of the pulse laser is 100 ns or less, and a single pulse peak energy density is 0.

Abstract: A manufacturing method of oriented silicon steel with magnetic induction B8 of not less than 1.88 T, comprising the following steps: 1) smelting and continuous casting to obtain a slab, wherein the content of N is controlled at 0.002-0.014 wt % in the smelting stage; 2) hot-rolling; 3) cold-rolling; 4) decarbonizing and annealing; 5) nitriding treatment, wherein infiltrated nitrogen content [N]D is controlled to satisfy the formula: 328?0.14a?0.85b?2.33c?[N]D?362?0.16a?0.94b?2.57c, wherein a is the content of Als in the smelting step, with the unit of ppm; b is the content of N element, with the unit of ppm; and c is primary grains size, with the unit of ?m; 6) coating a steel's surfaces with a magnesium oxide layer and annealing; and 7) applying an insulating coating.

Abstract: A manufacturing method of oriented silicon steel with magnetic induction B8 of not less than 1.88 T, comprising the following steps: 1) smelting and continuous casting to obtain a slab, wherein the content of N is controlled at 0.002-0.014 wt % in the smelting stage; 2) hot-rolling; 3) cold-rolling; 4) decarbonizing and annealing; 5) nitriding treatment, wherein infiltrated nitrogen content [N]D is controlled to satisfy the formula: 328?0.14a?0.85b?2.33c?[N]D?362?0.16a?0.94b?2.57c, wherein a is the content of Als in the smelting step, with the unit of ppm; b is the content of N element, with the unit of ppm; and c is primary grains size, with the unit of ?m; 6) coating a steel's surfaces with a magnesium oxide layer and annealing; and 7) applying an insulating coating.