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| Number | Title | Issue Date |
| 8158274 | Welding material and welded joint structure A welding material, to be used for welding a base metal made of an austenitic alloy comprising C≦2.0%, Si≦4.0%, Mn: 0.01 to 3.0%, P: more than 0.03% to not more 0.3%, S≦0.03%, Cr: 12 to 35%, Ni: 6 to 80%, sol. Al: 0.001 to 1% and N≦0.3%, with the balance bei... | 04/17/2012 |
| 8124247 | High-strength welded steel pipe including weld metal having high cold-cracking resistance and method for manufacturing the same A high-strength steel pipe has a tensile strength of 800 MPa or more and includes a weld metal having high cold-cracking resistance and high low-temperature toughness, wherein the weld metal contains C: 0.04% to 0.09% by mass, Si: 0.32% to 0.50% by mass, Mn: 1.4% to... | 02/28/2012 |
| 8114528 | Electron beam welded joint excellent in brittle fracture resistance To form a welded joint having a sufficiently high fracture toughness value δc by butting welding high strength steel plates having a yield strength of the 355 MPa class or more and a plate thickness of over 50 mm by electron beam welding, the butt welded joint is m... | 02/14/2012 |
| 8110292 | High strength steel plate, steel pipe with excellent low temperature toughness, and method of production of same The present invention provides high strength steel plate with excellent low temperature toughness, high strength steel pipe using this as a base metal, and methods of production of the same. The steel plate of the present invention contains Mo: 0.05 to 1.00% and B: ... | 02/07/2012 |
| 8084144 | High strength thick welded steel pipe for line pipe superior in low temperature toughness and method of production of the same The present invention provides high strength thick welded steel pipe for line pipe superior in low temperature toughness, and a method of production of the same. A base material steel plate containing C: 0.010 to 0.050%, Si: 0.01 to 0.50%, Mn: 0.50 to 2.00%, Al: 0.0... | 12/27/2011 |
| 8039118 | Welded steel pipe for high strength line pipe superior in low temperature toughness and method of production of the same The present invention provides high strength welded steel pipe for line pipe inexpensive in cost and superior in low temperature toughness, and a method of production of the same, produced by forming a base material steel plate containing, by mass %, C: 0.010 to 0.0... | 10/18/2011 |
| 7951469 | Welding material and welded joint structure A welding material, to be used for welding a base metal made of an austenitic alloy comprising C≦2.0%, Si≦4.0%, Mn: 0.01 to 3.0%, P: more than 0.03% to not more 0.3%, S≦0.03%, Cr: 12 to 35%, Ni: 6 to 80%, sol. Al: 0.001 to 1% and N≦0.3%, with the balance bei... | 05/31/2011 |
| 7829202 | Large-heat-input butt welded joints having excellent brittle fracture resistance A large-heat-input butt-welded joint of welded structures prepared by butt-welding high-strength steel plates over 50 mm in thickness, having excellent brittle fracture resistance, is characterized by: (a1) the hardness of the weld metal is not more than 110% of the... | 11/09/2010 |
| 7588837 | Welding together low and high carbon steels A weld joins a thin overlay of low carbon steel to a base that contains high carbon steel, at least at its surface along which the weld is formed. The weld may be effected by fusion (melting) or by solid-state diffusion. With either it creates a heat affected zone (... | 09/15/2009 |
| 7393597 | Welded joint made of an austenitic steel A weld joint having a base material and a weld metal both of an austenitic steel, wherein the weld metal has a chemical composition, in mass %, that C: 0.04% or less, Si: 1.0% or less, Mn: 3% or less, P: 0.02% or less, S: 0.005% or less, Cr: 15 to 25%, Ni: 30% or mo... | 07/01/2008 |
| 7357060 | Vehicle armor A vehicle is armored the steps of sequentially making a steel plate with a thickness of 4 mm to 15 mm of by weight | 04/15/2008 |
| 7314670 | Welded component A welded component includes at least one high temperature segment of a high alloy Cr steel with high creep strength and a low temperature segment of a low alloy steel with high toughness and/or a high yield strength which are connected materially to one another via ... | 01/01/2008 |
| 7238434 | Welded structure having improved resistance to stress corrosion cracking This invention relates to a welded line pipe structure for transporting corrosive petroleum or natural gas. It is constituted by martensitic stainless steel pipes containing 8–16% Cr and at most 0.05% C. By suitably controlling the welding conditions at the time o... | 07/03/2007 |
| 7217905 | Weld filler metal that reduces residual stress and distortion A filler metal including not more than about 0.1% C, not more than about 1.0% Si; not more than about 0.8% Mn; from about 10.5% to about 13.0% Cr; from about 0.65% to about 4.0% Ni; from about 10(% C) to about 1.5% Ti; not more than about 0.5% each of N, S, P, Mo, N... | 05/15/2007 |
| 7210388 | Bimetal saw band A bimetal saw band which is suitable for cutting materials of high hardness and wear resistance at high cutting speeds and with a reduced consumption of coolant is disclosed. The saw band includes a support band with from 0.20 to 0.45% of carbon, from 0.2 to 0.6% of... | 05/01/2007 |
| 7205032 | Controlled thermal expansion of welds to enhance toughness A method is provided for forming a metallic overlay having enhanced toughness. The metallic overlay may be a weld, a metallic coating, or similar application. The method includes applying a glass forming metallic alloy to a substrate while the alloy is in a molten o... | 04/17/2007 |
| 7082992 | Oil well steel pipe for embedding-expanding An oil well steel pipe for embedding-expanding excellent in the SSC resistance after expanding. The pipe is made of a steel consisting of, by mass %, C: 0.05 to 0.45%, Si: 0.1 to 1.5%, Mn: 0.1 to 3.0%, P: 0.03% or less, S: 0.01% or less, sol.Al: 0.05% or less, and t... | 08/01/2006 |
| 7077306 | Ceramic armor and method of making by encapsulation in a hot pressed three layer metal assembly A ceramic armor is disclosed in several embodiments. In a first embodiment, a metal base plate has a metal frame assembled on it having a central opening into which the ceramic material is placed. A cover plate is placed over the frame to enclose the ceramic materia... | 07/18/2006 |
| 7017465 | Cutting tool with grooved cutting edge A cutting tool includes a base made of metal having a plurality to cutting teeth along an edge of the base, wherein at least one cutting tooth has at least one notch in the cutting edge of the at least one cutting tooth. A tool is prepared by introducing a notch run... | 03/28/2006 |
| 7011139 | Method of continuous casting non-oriented electrical steel strip Non-oriented electrical steels are widely used as the magnetic core material in a variety of electrical machinery and devices, particularly in motors where low core loss and high magnetic permeability in all directions of the strip are desired. A method for producin... | 03/14/2006 |
| 6966955 | Steel plate having TiN+ZrN precipitates for welded structures, method for manufacturing same and welded structure made therefrom A weldable structural steel product having TiN and ZrN precipitates, which contains, in terms of percent by weight, 0.03 to 0.17% C, 0.01 to 0.5% Si, 0.4 to 2.0% Mn, 0.005 to 0.2% Ti, 0.0005 to 0.1% Al, 0.001 to 0.03% Zr, 0.008 to 0.030% N, 0.0003 to 0.01% B, 0.001 ... | 11/22/2005 |
| 6953627 | Method for the production of thin-walled steel components and components produced therefrom A process for the production of thin walled parts of steel, wherein there are layers that are at least partly differently treatable relating to their strength and hardness qualities. This process can include creating a composite material from a plurality of differen... | 10/11/2005 |
| 6948649 | Method of producing steel pipes, and welded pipes The high yield ratio problem intrinsic in high-strength steel pipes is solved and a method of producing a steel pipe, while securing the pipe roundness is provided. A steel pipe produced from a steel plate by forming and welding is subjected to 0.3 to 1.2% of expans... | 09/27/2005 |
| 6939623 | High strength steel plate having superior electromagnetic shielding and hot-dip galvanizing properties The steel plate is manufactured from a composition comprising C, N and S in an amount of 0.0150% by weight or less in total; Mn in an amount of 0.2 to 0.8% by weight; Al inan amount of 0.6% by weight or less; Si in an amount of 0.4% by weight or less; Cu and/or Sn i... | 09/06/2005 |
| 6872466 | Method and apparatus for repairing screens A method of plugging an area of damaged mesh in a sifting screen. The method is applicable to screens in which woven wire mesh is stretched, tensioned and secured over a supporting frame containing a plurality of windows and in which local damage to the mesh is in a... | 03/29/2005 |
| 6869692 | Bimetal saw band Bimetal saw band comprising a support band of high microstructural stability and fatigue strength, comprising 0.25 to 0.35% of carbon, 0.3 to 0.5% of silicon, 0.8 to 1.5% of manganese, 1.0 to 2.0% of molybdenum, 1.5 to 3.5% of chromium, 0.5 to 1.5% of nickel, 0.5 to... | 03/22/2005 |
| 6866942 | Press-forming tailored blank material excellent in formability and production method therefor There is provided a tailored blank article for press forming, the article having an excellent formability and comprising multiple different plates of different thickness, which can evade a break of a low strength plate (or low-thickness plate) due to strength rate-d... | 03/15/2005 |
| 6861161 | Composite tool A composite tool comprising a supporting part of a metallic material having a first composition and a working part of a metallic material having a second composition which is different from the first composition, a process for the manufacture thereof and a method of... | 03/01/2005 |
| 6802432 | Enamel cooking ware An enamel cooking ware, of which the cooking ware's body consists of an inner coating layer, an outer coating layer, and the cooking ware's body; wherein, the cooking ware body is made of stainless steel, and a dense mass of small concaves with small sizes is formed... | 10/12/2004 |
| 6783871 | Direct bond of steel at low temperatures The instant invention is directed to a bonded product, such as a manifold, for gas or liquid chromatographs, and a method for making the same. The bonded product is made using the following steps: (i) contacting two or more steel sheets; (ii) heating the contacted s... | 08/31/2004 |
| 6773829 | Method for casting molten metal, apparatus for the same, and cast slab A cast slab has a negative segregation zone composed of a multilayer structure of negative segregation layers disposed between dendrite or crystalline layers. The dendrite or crystalline layers are a deflection structure caused by vibration during formation of the c... | 08/10/2004 |
| 6749954 | Welded steel pipe having excellent hydroformability and method for making the same A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.03% to about 0.2% C, about 2.0% or less of Si, not less than about 1.0% to about 1.5% Mn, about 0.1% or le... | 06/15/2004 |
| 6723453 | Welded steel pipe having excellent hydroformability and method for making the same A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.05% to about 0.2% C; about 0.2% or less of Si; about 1.5% or less of Mn; about 0.1% or less of P; about 0.... | 04/20/2004 |
| 6713190 | Reinforcement for a moulded filtering screen support frame A method is described for making a reinforcing wire frame for embedding in a moulded polymer support frame over which woven wire cloth is to be stretched and secured to form a sifting screen. The method involves locating lengths of cut wire substantially equally spa... | 03/30/2004 |
| 6709745 | Electromagnetic absorber material, method for the production thereof and method for the production of shielding devices thereof A method for effectively decreasing electromagnetic radiation by means of active absorbing material in a broad frequency band, preferably from 100 MHz-10 GHz, is provided wherein the material combines the desired shielding properties with the heat insulating propert... | 03/23/2004 |
| 6706416 | Process for manufacturing corrosion resistant composite metal products A method of producing a corrosion resistant ferrous product is disclosed. The product is produced by rolling a heated billet which comprises a mass of mild steel swarf in a stainless steel jacket. Two reducing agents are present in the jacket when the billet is heat... | 03/16/2004 |
| 6682829 | Welded steel pipe having excellent hydroformability and method for making the same A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition comprising, on the basis of mass percent: about 0.05% to about 0.3% C; about 2.0% or less of Si; more than about 1.5% to about 5.0% Mn; about 0.1... | 01/27/2004 |
| 6673468 | Composite material made of two steel cover sheets resistance-welded together and an intermediate layer The invention concerns a composite material in band or slab form made of two cover plates (1, 2), made of steel, which can be resistance welded together via electrically conductive bodies (4), and an intermediate layer (3) made of a filler material in whi... | 01/06/2004 |
| 6670048 | Sintered sprocket A sintered sprocket is provided in which surface pressure resistance can be improved without using a forging processing. An Fe-based sintered alloy which contains C at 0.2 to 0.5% by weight, Mo at 0.2 to 1.0% by weight, and Ni at 0.2 to 1.0% by weight, an... | 12/30/2003 |
| 6667110 | Hybrid steel cord for tires A hybrid steel cord and method of making such cord which includes, in contact with one or more carbon steel wire(s), at least one stainless steel wire whose microstructure contains less than 20% of martensite (% by volume). Articles made of plastic and/or... | 12/23/2003 |
