| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 148278000 | Carbide formation, decarburization or carbonizing | 7 |
| 20110192499 | GROUP 5 METAL SOURCE CARBIDE COATED STEEL ARTICLE AND METHOD FOR MAKING SAME - One exemplary embodiment includes a process for forming a hard carbide coating onto a low chromium-containing steel article via a chemical deposition process carried out on a particulate mix, in which molybdenum in the form of a compound FeMo or titanium in the form of a compound FeTi, or a mixture of FeMo and FeTi, may be added to the particulate mix used to form the coating. | 08-11-2011 |
| 20120325375 | Steel Sheet Manufactured by Decarburizing Solid Sponge Iron and Method for Manufacturing the Same - A steel sheet which is decarburized after being strip casted and a method for manufacturing the same are provided. A method for manufacturing the steel sheet includes i) providing molten iron, ii) removing sulfur, phosphorus, and silicon from the molten iron, iii) strip casting the molten iron and providing the steel sheet, and iv) heating and contacting the steel sheet with an oxidization gas while decarburizing the steel sheet. | 12-27-2012 |
| 20130000789 | METHOD FOR MANUFACTURING STEEL PLATE WITH A LAYERED STRUCTURE - A method for manufacturing a steel plate provided with a layered structure. A method for manufacturing a steel plate includes: i) providing a high carbon steel plate; ii) homogenizing the high carbon steel plate; iii) transforming the high carbon steel plate into an austenitic phase by heating the high carbon steel plate; iv) contacting the high carbon steel plate with an oxidization gas and converting the high carbon steel plate into a steel plate comprising surface layers that are spaced apart from each other and are decarburized to be transformed into a ferritic phase, and a center layer that is located between the surface layers and is not decarburized; and v) cooling the high carbon steel plate and transforming the center layer into a martensitic phase. | 01-03-2013 |
| 20130048150 | Method for producing workpieces from lightweight steel having material properties that are adjustable across the wall thickness - A method for producing a workpiece having properties which are adjustable across a wall thickness or strip thickness of the workpiece, includes the steps of subjecting the workpiece to a decarburizing annealing treatment under an oxidizing atmosphere and to an accelerated cooling and/or a cold forming for generating a property gradient of the workpiece, wherein the workpiece is made of an austenitic lightweight steel which has an alloy composition which includes by weight percent 0.2% to 1% carbon, 0.05% to <15% aluminum, 0.05% to 6.0% silicon, 9% to <30% manganese, and at least one element selected from the group consisting of chromium, copper, boron, titanium, zirconium, vanadium and niobium, wherein chromium=4.0%; titanium+zirconium=0.7%; niobium+vanadium=0.5%, boron=1%, the remainder iron including common steel companion elements. | 02-28-2013 |
| 20130269837 | COMPOSITION AND METHOD FOR DIFFUSION ALLOYING OF FERROCARBON WORKPIECE - A composition for diffusion surface alloying of ferrocarbon alloys with chromium, consisting essentially of, by weight, about 25%-40% ferrochromium; about 54%-74% aluminum oxide or mixtures of aluminum oxide, silicon oxide and magnesium oxide in a weight ratio of about 3:2:1; about 1%-3% ammonium chloride; and a reducing agent consisting essentially of about 0.1%-3% aluminum, about 0.1%-2% silicon, about 0.1%-1.5% magnesium, or about 0.1%-3% of a mixture of aluminum, silicon and magnesium in a weight ratio of about 3:2:1. A method for diffusion surface alloying of a ferrocarbon workpiece with chromium, comprising providing the above composition; exposing the workpiece to the composition; and heating the workpiece and composition for sufficient time and temperature to form a chromium containing diffusion layer on the surface of the workpiece. | 10-17-2013 |
| 20150083278 | High-Strength Hot-Dip Galvanized Steel Sheet Excellent in Impact Resistance Property and Manufacturing Method Thereof, and High-Strength Alloyed Hot-Dip Galvanized Steel Sheet and Manufacturing Method Thereof - A base steel sheet has a hot-dip galvanized layer formed on a surface thereof, in which, in a steel sheet structure in a range of ⅛ thickness to ⅜ thickness centered around ¼ thickness of a sheet thickness from a surface, a volume fraction of a retained austenite phase is 5% or less, and a total volume fraction of phases of bainite, bainitic ferrite, fresh martensite, and tempered martensite is 40% or more, an average effective crystal grain diameter is 5.0 μm or less, a maximum effective crystal grain diameter is 20 μm or less, and a decarburized layer with a thickness of 0.01 μm to 10.0 μm is formed on a surface layer portion, in which a density of oxides dispersed in the decarburized layer is 1.0×10 | 03-26-2015 |
| 20220136076 | STEEL DECARBURIZATION USING CARBON DIOXIDE - Process to decarburize steel are described. A process can include contacting carbon dioxide with molten steel in an electric arc furnace, a ladle furnace, or a vacuum degassing unit, or a combination thereof. | 05-05-2022 |
