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7608154 |
Nonoriented electrical steel sheet excellent in core loss
A nonoriented electrical steel sheet excellent in core loss comprising copper sulfides with a sphere-equivalent radius of 100 nm or less, wherein the number density of the copper sulfides is less...
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7566371 |
Non-oriented electrical steel sheet excellent in magnetic properties in rolling direction and method of production of same
Non-oriented electrical steel sheet remarkably improved in magnetic properties in the rolling direction by a method superior in cost and productivity, that is, non-oriented electrical steel sheet...
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7513959 |
Non-oriented electrical steel sheet and method for manufacturing the same
When a non-oriented electrical steel sheet is manufactured, simultaneously having superior magnetic properties and high strengths, a composition containing 0.02% or less of C, 4.5% or less of Si,...
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7501028 |
Non-grain oriented magnetic steel strip or magnetic steel sheet and method for its production
The invention relates to non-grain oriented magnetic steel sheets which can be produced as final annealed and as a non-final annealed types in such a way that they have improved magnetic...
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7501029 |
High-strength, high-permeability steel sheet for picture tube band and method of producing the same
A high-strength, high-permeability steel sheet for picture tube band comprises, in mass percent, C: 0.003-0.010%, Si: 0.5-1.0%, Mn: 1.0-2.0%, P: 0.04-0.15%, S: not more than 0.02%, Al: not more...
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7470333 |
Non-oriented electrical steel sheet excellent in core loss and manufacturing method thereof
A non-oriented electrical steel sheet is characterized in that the number density of inclusions with an equivalent volume diameter of less than 100 nm contained in the steel sheet is 1×10 10 [/mm...
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7465364 |
Fe-Cr-Si based non-oriented electromagnetic steel sheet and process for producing the same
An Fe—Cr—Si based non-oriented electrical steel sheet contains 2.5% to 10% by mass of Si, 1.5% to 20% by mass of Cr, 0.006% by mass or less of C, 0.002% by mass or less of N, 0.005% by mass or...
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7465361 |
Method for producing grain oriented magnetic steel sheet and grain oriented magnetic steel sheet
In a method for manufacturing a grain-oriented electrical steel sheet using steel containing less than 100 ppm of Al and 50 ppm or less each of N, S, and Se as a starting material, purification...
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7442260 |
Grain-oriented electrical steel sheet superior in electrical characteristics and method of production of same
The present invention provides a grain-oriented electrical steel sheet with an extremely low core loss by scanning by a small focused laser beam spot and a method of production of the same, that...
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7399369 |
Ultra-high magnetic flux density grain-oriented electrical steel sheet excellent in iron loss at a high magnetic flux density and film properties and method for producing the same
The present invention is a grain-oriented electrical steel sheet characterized in that Bi is present at 0.01 to less than 1,000 ppm in terms of mass at the interface of the substrate steel and the...
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7377986 |
Method for production of non-oriented electrical steel strip
The present invention relates to a method for producing a non-oriented electrical steel with improved magnetic properties and improved resistance to ridging, brittleness, nozzle clogging and...
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7371291 |
Grain-oriented magnetic steel sheet having no undercoat film comprising forsterite as primary component and having good magnetic characteristics
A grain oriented electromagnetic steel sheet is free from an undercoating mainly composed of forsterite (Mg 2 SiO 4 ), excellent in processability and magnetic properties and useful to production...
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7364629 |
Method for manufacturing grain-oriented silicon steel sheets with mirror-like surface
In a method for manufacturing grain-oriented silicon steel with mirror-like surface by applying an aqueous slurry of an annealing separator, magnetic properties are stabilized by controlling the...
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7291230 |
Grain-oriented electrical steel sheet extremely excellent in film adhesiveness and method for producing the same
The present invention: relates to a grain-oriented electrical steel sheet and a double-oriented electrical steel sheet which are used as soft magnetic materials for electrical machinery and...
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7282102 |
Method for manufacturing high silicon grain-oriented electrical steel sheet with superior core loss property
A method for manufacturing a high silicon grain-oriented electrical steel sheet. In a method for manufacturing a high silicon grain-oriented electrical steel sheet, comprising the steps of:...
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7214277 |
Method for manufacturing non-oriented electrical steel sheet having high magnetic flux density
A quench solidification method, wherein a steel cast strip having a mean grain size 50 μm or more is prepared and then the steel cast strip is rolled to produce a non-oriented electrical steel...
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7198682 |
Process for the production of grain oriented electrical steel
A process for the production of electrical steel strips, in which a strip is directly cast from molten steel and contains alloy elements apt to generate a precipitation of sulphides and/or nitrides...
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7192492 |
Process for the control of inhibitors distribution in the production of grain oriented electrical steel strips
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...
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RE39482 |
Method of making grain-oriented magnetic steel sheet having low iron loss
Grain-oriented magnetic steel sheet made by the method-including hot rolling and final finish annealing, wherein
(1) the O content in the steel slab is limited to up to about 30 ppm; (2) for...
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7045025 |
Grain-oriented electrical steel sheet excellent in magnetic properties and method for producing the same
A low core loss grain-oriented electrical steel sheet that does not have a significant deterioration in a magnetic flux density and a decrease of a space factor, and which may withstand...
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6964711 |
Process for the production of grain oriented electrical steel strips
A process for the production of grain oriented electrical Fe-Si strips in which a Si-containing alloy is directly cast as a strip between 2.5–5.0 mm thick and cold rolled in one stage, or in more...
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6938324 |
Method of manufacturing a stator core
A motor stator core for achieving improved magnetizing feature in lower magnetic fields and reduced iron loss, and improving motor power. The stator core fabriated out of non-oriented electrical...
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6929704 |
Grain-oriented electromagnetic steel sheet
A grain-oriented electromagnetic steel sheet having a multiplicity of fine grains having a diameter of about 3 mm or less on the surface of the steel sheet, in a numerical ratio of about 65% or...
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6858095 |
Thick grain-oriented electrical steel sheet exhibiting excellent magnetic properties
A grain-oriented electrical steel sheet comprising 2.5-4.5% Si by weight and measuring 0.36-1.00 mm in thickness is imparted with a good core loss value for its thickness by controlling its C...
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6821358 |
Ferritic stainless steel which can be used for ferromagnetic parts
Ferritic stainless steel, comprising the following composition by weight: 0%<C≦0.030% 1%≦Si≦3% 0%<Mn≦0.5% 10%≦Cr≦13% 0%<Ni≦0.5% 0%<Mo≦3% N≦0.030% Cu≦0.5% Ti≦0.5%...
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6811619 |
Method of manufacturing grain-oriented electrical steel sheets
A method of manufacturing a grain-oriented steel sheet including hot-rolling a slab prepared using molten steel containing, by mass %, C of not more than about 0.08%, Si of about 2.0 to about 8.0%...
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6773514 |
Method for producing non-grain oriented electric sheet steel
The present invention relates to a method for producing non grain-oriented magnetic steel sheets in which hot strip is produced from an input stock such as cast slabs, strip, roughed strip, or thin...
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6767412 |
Method for producing non-grain-oriented magnetic steel sheet
The invention relates to a method for producing non-grain-oriented hot-rolled magnetic steel sheet in which from a raw material such as cast slabs, strip, roughed strip or thin slabs produced from...
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6749693 |
Method of producing (110)&lsqb 001&rsqb grain oriented electrical steel using strip casting
In a method of producing a strip suitable for further processing to yield a (110)[001] grain oriented electrical steel from a thin strip such as a continuously cast thin strip the thin cast strip...
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6739384 |
Method of continuously casting electrical steel strip with controlled spray cooling
A method for continuously casting grain oriented electrical steel is disclosed. This method utilizes a controlled rapid cooling step, such as one using a water spray, to control the grain...
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6733599 |
Method for producing grain-oriented silicon steel sheet not having inorganic mineral film
The present invention provides a method for producing a grain-oriented silicon steel sheet not having inorganic mineral films by using an annealing separator capable of preventing the inorganic...
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6676771 |
Method of manufacturing grain-oriented electrical steel sheet
Manufacturing a grain-oriented electrical steel sheet, a secondary recrystallization step and a forsterite coating forming step are separated into first batch annealing for developing secondary...
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6666929 |
Process for the improvement of the magnetic characteristics in grain oriented electrical silicon steel sheets by laser treatment
It has been found out that in the laser treatment for the control of the magnetic domain sizes in grain oriented electrical silicon steel sheets, by optimizing some essential parameters of the...
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6638368 |
Non-oriented electrical steel sheet and method for producing the same
The non-oriented electrical steel sheet having the following chemical composition: C: 0.01% or less, Si: 2.5% or less, Mn: 2% or less, Al: 1 to 5%, Si+Al+0.5×Mn: 2.5 to 5%, with a sheet thickness...
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6613160 |
Method to produce grain-oriented electrical steel sheet having high magnetic flux density
The present invention, in a method to produce a grain-oriented electrical steel sheet, proposes conditions for stable production by clarifying the causes by which secondary recrystallization is...
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6582528 |
Method of producing non-grain-oriented electrical sheet
Method for producing non-grain-oriented electric sheet comprising: introducing steel input stock as a heated and prerolled slab into finishing rolls at a temperature of ≦1100° C. wherein the...
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6565674 |
High flux density grain-oriented electrical steel sheet excellent in high magnetic field core loss property and method of producing the same
A high flux density grain-oriented electrical steel sheet excellent in high magnetic field core loss property containing, in percentage by weight, not greater than 0.005% of C, 2.0-7.0% of Si, not...
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6562150 |
Steel sheet for heat shrink band and manufacturing method thereof
A steel sheet for heat shrink band of the present invention has anhysteretic magnetic permeability of 15,000 or higher at 0.35 Oe and yield stress of 24 kgf/mm 2 or more. The steel sheet can be...
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6562473 |
Electrical steel sheet suitable for compact iron core and manufacturing method therefor
Electrical steel sheets having superior magnetic properties, anti-noise properties, and workability, are ideal for use a compact iron core material in electric apparatuses, such as compact...
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6524400 |
Process for the production of grain-oriented electric quality sheet with low remagnetization loss and high polarization
A process for the production of grain-oriented electric quality sheet by melting a silicon steel and casting the melt continuously into a strand having a thickness of 25-100 mm. During...
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6503339 |
Method for producing non-grain oriented magnetic sheet steel
The invention relates to a method to produce non-grain-oriented magnetic steel sheet made of thin-slab or slab casting with low specific total loss and high polarisation and favourable mechanical...
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6478892 |
Low iron loss non-oriented electrical steel sheet excellent in workability and method for producing the same
The present invention provides a non-oriented electrical steel sheet having crystal grains of small diameter and excellent workability before stress relief annealing and having crystal grains of...
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6479992 |
Leakage flux flaw detecting method and method for manufacturing hot rolled steel sheet using the same
The present invention provides a leakage flux flaw detecting method in which a ferromagnetic substance such as a steel sheet or coil is magnetized by a plurality of magnetic fields with different...
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6471787 |
Process for the production of oriented-grain electrical steel sheet with high magnetic characteristics
A process for the production of oriented-grain electrical steel sheet with high magnetic characteristics, and more precisely a process in which the slab obtained from continuous casting is...
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6451128 |
Method for manufacturing high magnetic flux denshy grain oriented electrical steel sheet based on low temperature slab heating method
A method for manufacturing a high magnetic flux density grain oriented electrical steel sheet is disclosed. A silicon steel slab is heated and hot-rolled, and the steel sheet is annealed and...
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6444049 |
Method for producing high silicon steel, and silicon steel
Manufacture by rolling silicon steel having a silicon content of 3 wt % or greater and by rolling thin sendust sheet is implemented by powder metallurgical fabrication using powder as the starting...
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6444051 |
Method of manufacturing a grain-oriented electromagnetic steel sheet
A method of making a grain-oriented electromagnetic steel sheet having a low iron loss and a high magnetic flux density, from a steel slab with 0.03 to 0.095 wt % carbon, about 1.5 to 7.0 wt % Si,...
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6432222 |
Method for producing a grain-oriented electrical steel sheet excellent in magnetic properties
A method for producing a grain-oriented electrical steel sheet excellent in magnetic property, comprising the steps of; heating a slab containing a prescribed amount of Al to a temperature of...
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6416592 |
Electromagnetic steel sheet having excellent magnetic properties and production method thereof
Electromagnetic steel sheet having excellent magnetic properties and a texture gratly integrated in the {100}<001> orientation, and an uncomplicated and low cost production method; with about...
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6416591 |
Non-oriented electromagnetic steel sheet having excellent magnetic properties after stress relief annealing and method of manufacturing the same
A finish annealed non-oriented electromagnetic steel sheet includes about 0.01 wt % or less of C, greater than about 1.0 wt % and at most about 3.5 wt % of Si, at least about 0.6 wt % and at most...
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