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7465361 |
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 annealing is performed at 1050° C. or more...
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7442260 |
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 is, a grain-oriented electrical steel shee...
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7377986 |
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 magnetic aging. The chromium bearing steel is ...
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7282102 |
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: reheating and hot-rolling a steel slab to produ...
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RE39482 |
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 the entire steel sheet having final thi...
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7150092 |
A method of manufacturing a spin-valve thin-film magnetic element is provided. The spin-valve thin-film magnetic element includes a free magnetic layer and laminates of pinned magnetic layers and antiferromagnetic layers formed on two su...
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7096075 |
For determination as to whether there is a possibility that temperature control satisfying conditions according to an upper limit LH_i and a lower limit LL_i of the annealing control temperatures of annealing object steel sections i will...
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7045025 |
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 stress-relieving annealing is provided. Melted and ...
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6964711 |
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 stages with intermediate annealing, to ...
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6936792 |
Furnace cart assembly for loading high temperature vacuum furnaces for treating target material, for example, metal parts, under extreme temperature and vacuum environments. The furnace cart includes electrical heating elements as an int...
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6925352 |
Disclosed are a method and a system for predicting precipitation kinetics in precipitation-hardenable alloys, such as the 7000 series aluminum alloys, and for optimizing conditions for thermal treatment thereof. The method includes the s...
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6864793 |
A magnetic marker comprises a magnetically switchable wire and a magnetic casing that covers the magnetically switchable wire. The magnetically switchable wire is formed of a magnetic material that undergoes occurrence of sharp magnetic ...
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6858095 |
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 content, flux density, grain boundary configu...
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6773514 |
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 slabs, made of steel comprising (in wei...
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6767412 |
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 a steel comprising (in weight %) C: 0.00...
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6739384 |
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 orientation in the finished product. The product ...
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6708388 |
A permanent magnet field-type compact DC motor having a high output and a low cogging torque is made by fixing a pair of rare earth magnets mainly composed of rare earth-iron-based rapidly quenched and solidified flakes to a soft magneti...
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6666929 |
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 treatment such as specific radiation energy,...
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6612154 |
Systems and methods for monitoring a heat treating atmosphere derive from at least one sensor placed in situ in the atmosphere a process variable, which is indicative of the ratio of gaseous hydrogen H 2 (g) to water vapor H 2 O(g) in th...
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6562473 |
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 transformers, motors, and electric generators. A...
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6478892 |
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 largely grown diameter and excellent iron ...
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6471787 |
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 continuously nitrided by a reaction between alum...
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6406557 |
During the treatment of electrical steel, a careful combination of heat treatment of the slab with a specific primary recrystallization and nitriding treatment allows for control of the distribution, quantity and dimensions of precipitat...
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6364962 |
Electromagnetic steel sheets which contain Cr in an amount of from about 1.5 to 20% by weight and Si in an amount of from about 2.5 to 10% by weight, while having a total amount of C and N of not larger than about 100 ppm by weight, and ...
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6309473 |
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 the entire steel sheet having final thic...
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6296719 |
In the production of high permeability electrical steel, the control of condition of thin slab continuous casting allows to obtain advantageous solidification structures and precipitates. This, in turn, allows to decritize the process fo...
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6284388 |
The present invention is directed to a method of forming an electrically insulating layer on a steel article such as a stack of electrical steel laminations or an individual, unstacked electrical steel lamination, comprising exposing the...
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6284068 |
When an electrical potential is applied to a metal or a metallic solution or a metal that is close to the melting point or a metal that is molten the electric charges are either drawn off and the metal has a high positive potential or a ...
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6273964 |
In the production of grain oriented electrical steel sheet, controlling the condition of thin slab continuous casting results in advantageous solidification structures and precipitates. The steel has an initial content of carbon less tha...
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6228182 |
A method and a low iron loss grain-oriented electromagnetic steel sheet are disclosed. The method comprises the steps of: hot-rolling a grain-oriented electromagnetic steel sheet; cold-rolling the hot-rolled steel sheet once or twice int...
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6221501 |
The present invention is directed to a method of forming an electrically insulating layer on a steel article such as a stack of electrical steel laminations or an individual, unstacked electrical steel lamination, comprising exposing the...
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6217673 |
Batch annealed, semi-processed and fully processed motor lamination steels are made by processes which subject a slab having a particular ultra low carbon composition (less than 0.01%) to steps which include hot rolling a slab into a str...
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6159309 |
The present invention provides a grain-oriented electrical steel sheet having magnetic properties equal to, or higher than, those of conventional steel sheets can be produced economically with high productivity, and a method for producin...
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6159305 |
An induction motor rotor comprises a rotor shaft (12), a rotor core (14), which may be solid (114) or may include a plurality of rotor laminations (13), having rotor bar slots (15), a plurality of rotor bars (16) extending through the ro...
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6153019 |
A process for producing a grain-oriented magnetic steel sheet in which a slab, made from a steel containing (in mass %) more than 0.005 to 0.10% C, 2.5 to 4.5% Si, 0.03 to 0.15% Mn, more than 0.01 to 0.05% S, 0.01 to 0.035% Al, 0.0045 to...
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6129992 |
Provided are a high strength cold rolled steel sheet and a high strength plated steel sheet possessing improved geomagnetic shielding properties, that is, having a high relative permeability in a d.c. magnetic field around 0.3 Oe, a proc...
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6110298 |
Grain-oriented electrical steel sheet having excellent magnetic characteristics in which shearing angles of grain directions [001] of secondary recrystallized grains from a rolling direction have an average value of about 4° or less, wh...
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6068708 |
A method of making electrical steel strip characterized by low core loss, high permeability and good cleanliness includes producing a slab having a composition consisting essentially of (% by weight): up to 0.02 C, 0.20-1.35 Si, 0.10-0.4...
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6007642 |
The present invention is directed to a low loss motor lamination steel having a relatively low alloy content, which has a composition such that the motor lamination steel is fully ferritic at all solid temperatures. The steel preferably ...
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5951788 |
A stainless steel alloy useful as a construction material in superconducting magnetic components, said alloy containing in weight percent 0.05-0.25% C, 0.1-1.5% Si, 3.5-7.5% Mn, 17-21% Cr, 6-10% Ni, 0.10-0.50% N, the remainder being Fe a...
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5913987 |
A method for manufacturing a soft magnetic steel sheet is disclosed. The silicon steel sheet is made to undergo a finish treatment so that it can be put to the practical use. The finish treatment method for an Fe-Si silicon steel sheet m...
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RE35967 |
Batch annealed, semi-processed and fully processed motor lamination steels are made by processes which subject a slab having an ultra low carbon composition (less than 0.01%) to at least the following steps: hot rolling with an austenite...
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5798001 |
A method of making electrical steel strip characterized by low core loss and high permeability in the rolling direction includes the steps of: hot rolling a slab into a strip having a composition consisting essentially of (% by weight): ...
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5759294 |
A process for the production of grain oriented magnetic steel sheets having improved remagnetization losses consisting essentially of (in % by weight) more than 0.005% to 0.10% C, 2.5 to 6.5% Si, 0.03 to 0.15% Mn, 0.010 to 0.050% S, 0.01...
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5759293 |
A decarburization-annealed steel strip as an intermediate material for grain-oriented electrical steel strip having good secondary recrystallization and excellent electrical properties is provided by causing a steel strip to possess a mi...
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5711825 |
A process for the production of grain oriented magnetic steel sheets comprises through-heating slabs containing more than 0.005% C, 2.5 to 6.5% Si, 0.03 to 0.15% Mn, 0.010 to 0.050% S, 0.010 to 0.035% Al, 0.0045 to 0.0120% N, and 0.020 t...
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5702539 |
The present invention provides a method of producing grain oriented electrical steel having excellent mechanical and magnetic properties. A hot processed strip having a thickness of 1.5-4.0 mm thickness a composition consisting essential...
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5676771 |
A non-oriented silicon steel sheet having a low core loss contains Si in an amount of about 2.5-5.0 wt % and S restricted to about 0.003 wt % or less and inclusions; the volume ratio of those inclusions having a particle size of about 4 ...
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5675886 |
A torque sensor including a magnetostrictive alloy ribbon having plural rows of plural hole groups arranged longitudinally in the direction at a required angle to the shaft, and the magnetostrictive alloy ribbon is glued to the surface o...
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5614034 |
The present invention provides a thin sheet product having a combination of excellent magnetic properties inherent in the steel having a silicon content of 6.5% or near 6.5% with a further lowered iron loss property, particularly in a hi...
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