Patent application number | Description | Published |
20080226936 | Centrifugally Cast External Layer for Rolling Roll and Method for Manufacture Thereof - A method for producing an outer layer for a roll having a structure having MC carbide dispersed at an area ratio of 20-60%, comprising the steps of (1) centrifugally casting a melt having a composition comprising, by mass, 2.2-6.0% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 8-22% of V, the balance being Fe and inevitable impurity elements, to produce a cylindrical body comprising an inner layer having concentration MC carbide, an MC-carbide-poor outer layer, and a concentration gradient layer between the inner layer and the outer layer, in which the area ratio of MC carbide changes, and (2) cutting the cylindrical body to a depth at which the area ratio of MC carbide is 20% or more. | 09-18-2008 |
20090092852 | CENTRIFUGALLY CAST COMPOSIT ROLL - A centrifugally cast composite roll comprising an outer layer having a composition comprising by mass 2.5-9% of C, 0.1-3.5% of Si, 0.1-3.5% of Mn, and 11-40% of V, the balance being Fe and inevitable impurities; an intermediate layer made of a high-speed steel alloy, which is formed inside the outer layer; and an inner layer made of cast iron or steel, which is formed inside the intermediate layer. | 04-09-2009 |
Patent application number | Description | Published |
20140356702 | POSITIVE ELECTRODE FOR ALKALINE STORAGE BATTERY AND ALKALINE STORAGE BATTERY USING THE SAME - Provided is a positive electrode for an alkaline storage battery, capable of achieving a high charge efficiency over a wide range of temperature including high temperatures. The positive electrode includes a positive electrode material mixture including: a nickel oxide as a positive electrode active material; a first additive; and a second additive differing from the first additive. An amount of sulfate ions SO | 12-04-2014 |
20150024258 | CYLINDRICAL ALKALINE STORAGE BATTERY - An alkaline storage battery includes: a cylindrical case having a side wall including an opening end portion and a bottom; a sealing plate; a gasket interposed between the sealing plate and the opening end portion; and a sealant between the gasket and the opening end portion. The side wall has an annular groove opened at an outer surface thereof, and an inwardly curl portion at the opening end portion. In at least part of the groove, the minimum width L1 is within 0.2 mm. The sealant includes a polyamide resin formed such that when two test-plate materials are bonded together at bonding faces facing each other via a bonding portion of the sealant, and moved in parallel with the bonding faces and in opposite directions to have a relative displacement within 0.5 to 5 mm, a stress at least 0.02 N/mm | 01-22-2015 |
20150104703 | ALLOY POWDER FOR ELECTRODES, NEGATIVE ELECTRODE FOR NICKEL-METAL HYDRIDE STORAGE BATTERIES INCLUDING THE SAME, AND NICKEL-METAL HYDRIDE STORAGE BATTERY INCLUDING THE SAME - Disclosed is an alloy powder for electrodes for nickel-metal hydride storage batteries having a high battery capacity and being excellent in life characteristics and high-temperature storage characteristics. The alloy powder includes a hydrogen storage alloy containing elements L, M, Ni, Co, and E. L includes La as an essential component. L includes no Nd, or when including Nd, the percentage of Nd in L is less than 5 mass %. The percentage of La in the hydrogen storage alloy is 23 mass % or less. M is Mg, Ca, Sr and/or Ba. A molar ratio α to a total of L and M is 0.045≦α≦0.133. A molar ratio x of Ni to the total of L and M is 3.5≦x≦4.32, and a molar ratio y of Co is 0.13≦y≦0.5. The molar ratios x and y, and a molar ratio z of E to the total of L and M satisfy 4.78≦x+y+z<5.03. | 04-16-2015 |
20150221989 | POSITIVE ELECTRODE ACTIVE MATERIAL FOR ALKALINE STORAGE BATTERIES, POSITIVE ELECTRODE FOR ALKALINE STORAGE BATTERIES AND ALKALINE STORAGE BATTERY INCLUDING THE SAME, AND NICKEL-METAL HYDRIDE STORAGE BATTERY - Provided is a positive electrode active material for alkaline storage batteries that enables to achieve a high charging efficiency in a wide temperature range including high temperatures, and suppress self-discharge. The positive electrode active material for alkaline storage batteries includes a nickel oxide. In a powder X-ray 2θ/θ diffraction pattern using CuKα radiation of the nickel oxide, the ratio I | 08-06-2015 |