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| Number | Title | Issue Date |
| 7354549 | Cast iron member manufacturing method A nitrogen trapping agent is added by a metering hopper to raw materials, which are melted and poured into a mold cavity of a metal mold device (18). The molten metal is then cooled and solidified into a casting (B). Before the molten metal is fully cooled an... | 04/08/2008 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7159701 | Automatic drag brake for a power take-off unit output shaft Improvement in a drag brake assembly for a power take-off unit, for use on trucks and the like, including a first reaction member axially located on an output shaft thereon; a brake disc rotatably affixed to and axially movable on the output shaft; a second reaction... | 01/09/2007 |
| 7081172 | Nodular graphite cast iron with high strength and high toughness A nodular graphite cast iron is provided, having a pearlite matrix, with high strength and high toughness. The nodular graphite cast iron consists essentially of, by weight %: from 3.0 to 4.6% of carbon; from 1.6 to 2.5% of silicon; from 0.2 to 0.6% of manganese; fr... | 07/25/2006 |
| 7070666 | Machinable austempered cast iron article having improved machinability, fatigue performance, and resistance to environmental cracking and a method of making the same A machinable austempered cast iron article has improved strength, machinability, fatigue performance, and resistance to environmental cracking. A method of making the machinable austempered cast iron article includes austenitizing an iron composition having a substa... | 07/04/2006 |
| 7015781 | Production method of magnetic circuit member, magnetic circuit member, and electromagnetic apparatus A magnetic circuit member contains spherical and/or caterpillar-shaped graphite dispersed in a ferritic iron matrix including silicon. ... | 03/21/2006 |
| 7011135 | Apparatus for producing a composite material including ceramic hollow particles and aluminum or aluminum alloy and method for producing the composite material the same An apparatus 1 for producing a composite material including ceramic hollow particles and one of aluminum and aluminum alloy pressurizes a gas feeding member 20, a molten stock vessel 30, a packing 50, a forming mold 60 and an air-r... | 03/14/2006 |
| 7005017 | Steel for mechanical construction, method of hot-shaping of a part from this steel, and part thus obtained The invention relates to a steel for mechanical construction, wherein its composition in percentages by weight is: 0.35%≦C≦1.2%; 0.10%≦Mn≦2.0%; 0.10%≦Si≦3.0%; traces≦Cr≦4.5%; traces≦Mo≦2.0%; traces≦Ni≦4.5%; traces≦V≦0.5%; traces≦Cu≦3.... | 02/28/2006 |
| 6994758 | Steel for mechanical construction, method of hot-shaping of a part from this steel, and part thus obtained The invention relates to a steel for mechanical construction, wherein its composition in percentages by weight is: 0.35%≦C≦2.5%; 0.10%≦Mn≦2.5%; 0.60%≦Si≦3.0%; traces≦Cr≦4.5%; traces≦Mo≦2.0%; traces≦Ni≦4.5%; traces≦V≦0.5%; traces≦Cu≦4%... | 02/07/2006 |
| 6971351 | Valve timing adjusting device A region including an engaging hole is given surface treatment such as partial quench hardening by induction hardening for improving surface hardness of the region. The partial quench hardening by induction hardening provides the region with satisfactory mechanical ... | 12/06/2005 |
| 6939414 | Nodular graphite iron alloy A nodular cast iron alloy for cast iron products having a high modulus of elasticity comprising the chemical constituents C, Si, Cu, Ni and/or Mo, Mn, Mg and S, wherein the alloy is composed in per cent by weight of: C | 09/06/2005 |
| 6702905 | Corrosion and wear resistant alloy An iron-based corrosion resistant and wear resistant alloy. The alloy can comprise (in weight percent) 0.005-0.5% boron, 1.2-1.8% carbon, 0.7-1.5% vanadium, 7-11% chromium, 1-3.5% niobium, 6-11% molybdenum, and the balance including iron and incidental im... | 03/09/2004 |
| 6596101 | High performance nanostructured materials and methods of making the same Preferred embodiments of the invention provide new nanostructured materials and methods for preparing nanostructured materials having increased tensile strength and ductility, increased hardness, and very fine grain sizes making such materials useful for ... | 07/22/2003 |
| 6348109 | Steel material and method for its manufacturing A steel material which is manufactured in a non-powder metallurgical way, comprising production of ingots or castings from a melt, consists of an alloy having the following chemical composition in weight-% Carbon: 2.0-4.3%, Silicon: 0.1-2.0%, Manganese: 0... | 02/19/2002 |
| 6332938 | Process for producing Fe-based member having high young's modulus and high toughness The present invention produces an Fe-based member having a high Young's modulus and a high toughness. In producing an Fe-based member, a first step and a second step are sequentially carried out. At the first step, an Fe-based material comprising 1.5% by ... | 12/25/2001 |
| 6319338 | High-strength steel plate having high dynamic deformation resistance and method of manufacturing the same The object of the present invention is to provide high-strength steel sheets exhibiting high impact energy absorption properties, as steel materials, to be used for shaping and working into such parts as front side members of automobiles which absorb impa... | 11/20/2001 |
| 6258180 | Wear resistant ductile iron Austempered ductile iron castings having primary iron carbides uniformly dispersed throughout an ausferritic matrix, and methods of making the same, are described. The dissolution of the primary iron carbides into the ausferritic matrix during the austemp... | 07/10/2001 |
| 6199618 | Method of producing castings In order to produce castings from cast iron with foliated graphite, the carbon content of the cast iron can be set at between approximately 3 and 4% by controlling the melting process of the type and/or operation of the melting furnace. The molten mass is... | 03/13/2001 |
| 6136101 | Casting material for thixocasting, method for preparing partially solidified casting material for thixocasting, thixo-casting method, iron-base cast, and method for heat-treating iron-base cast A thixocast casting material is formed of an Fe--C--Si based alloy in which an angle endothermic section due to the melting of a eutectic crystal exists in a latent heat distribution curve and has a eutectic crystal amount Ec in a range of 10% by weight | 10/24/2000 |
| 6071362 | Method and plant for rolling hot-rolled wide strip from continuously cast slabs A method and a plant for rolling hot-rolled wide strip from continuously cast thin slabs or slabs of medium thickness of about 40 to 100 mm, wherein the cast slab strand is divided into sections, is subjected to a temperature treatment in a continuous fur... | 06/06/2000 |
| 6024804 | Method of preparing high nodule malleable iron and its named product The invention is a malleable iron comprising about 250 to 400 nodules of graphite per square millimeter as observed in a photomicrograph at 100×, and a Brinell hardness of about 195 to 550 BHN. Preferably, the malleable iron further comprises sulfur and ... | 02/15/2000 |
| 6024916 | Cast cold tool and method for producing the same A cast cold tool is obtained through the steps of forming a casting by founding a molten steel consisting by weight percentage of 0.5 to 0.8% of C, not more than 1.0% of Si, 0.25 to 1.50% of Mn, 4.0 to 8.0% of Cr, 1.0 to 5.0% of Mo, one or both of 0.2 to ... | 02/15/2000 |
| 6013141 | Cast iron indefinite chill roll produced by the addition of niobium An indefinite chill roll alloy composition is disclosed containing carbon ranging from 2.5 to 4.0% by weight of the alloy and the carbon is present as free graphite in an amount ranging from 2-7%, preferably 3-6%, of the total carbon. The composition furt... | 01/11/2000 |
| 5976277 | High speed tool steel, and manufacturing method therefor A high speed tool steel and a manufacturing method therefor are disclosed, in which carbides are formed in the matrix in a uniform manner, thereby obtaining a high toughness and a high abrasion resistance. The high speed tool steel according to the presen... | 11/02/1999 |
| 5958257 | Process for treating brass components to reduce leachable lead A process for the treatment of brass components to reduce leachable lead therefrom when the component is exposed to water in which the brass component is first treated with an aqueous caustic solution to remove some of the leachable lead therefrom. Therea... | 09/28/1999 |
| 5876522 | Process and device for inline pickling of hot strips downstream of thin-slab production installations A process for pickling a strip which is produced in a thin slab installation and subsequently hot-rolled, especially a low-carbon steel strip, in a continuous process immediately following the rolling process. The process includes the following sequence o... | 03/02/1999 |
| 5855701 | Method of manufacture high carbon content steel Alloyed steel with high carbon content having a composition, expressed in percentage weight: carbon from 1.1 to 2.0%, manganese from 0.5 to 3.5%, chromium from 1.0 to 4.0%, silicon from 0.6 to 1.2%, the remainder being iron with the usual impurity content... | 01/05/1999 |
| 5855700 | Bimetallic casting serving as a wear piece in vertical crushing mills and its method of manufacture The invention relates to a bimetallic casting serving as a wear piece in vertical mills and its method of manufacture. It includes a core (13) made of a ductile cast iron and provided with mechanical bonding elements in the form of pins (15) which are ren... | 01/05/1999 |
| 5837069 | Cast iron components and method of making A cast iron component, eg a camshaft, has a wear-resistant layer formed on at least one surface portion thereof, said layer being rich in primary carbides. The cast iron surrounding the carbides and in the remainder of the component has a structure which ... | 11/17/1998 |
| 5753055 | Process for austempering ductile iron A process for austempering ductile iron includes austenitizing a ductile iron casting of low alloy content followed by quenching the workpiece for a controlled period of time in a quench medium such as water, an aqueous polymer solution or a medium speed ... | 05/19/1998 |
| 5531423 | Method and apparatus for heat treating metal castings An improved method and apparatus for heat treating metal castings with sand cores provides for removal of the sand core and recovery of the sand core material for reuse. The method and apparatus eliminate the need for removing the sand core from the casti... | 07/02/1996 |
| 5522949 | Class of ductile iron, and process of forming same A new class of ductile iron is formed by the hot isostatic pressing of a ductile iron casting, followed by austempering of the ductile iron casting. Hot isostatic pressing can be carried out at a pressure in the range of 10,000 to 17,000 psi at a temperat... | 06/04/1996 |
| 5383978 | Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet An alloy ingot for permanent magnet consists essentially of rare earth metal and iron and optionally boron. The two-component alloy ingot contains 90 vol % or more of crystals having a crystal grain size along a short axis of 0.1 to 100 μm and that along... | 01/24/1995 |
| 5248354 | Method for the preparation of a body of austempered ductile cast iron A unique method is proposed for the preparation of a body of an austempered ductile cast iron having a gradient of the mechanical property within the body by subjecting a body of a nodular graphite cast iron to an isothermal transformation treatment for a... | 09/28/1993 |
| 5183518 | Cryogenically super-hardened high-chromium white cast iron and method thereof A highly abrasion-resistant, high-chromium white cast iron alloy containing the following elemental analysis in percent by weight: 2.4-3.8% carbon, 0.4 to 2.0% manganese, 0.2 to 1.9% silicon, 0.0 to 3.0% copper, 1.5 to 4.5% nickel, 12.0 to 29.0% chromium,... | 02/02/1993 |
| 5139579 | Method for preparing high silicon, low carbon austempered cast iron A method for preparing an austempered cast iron which includes an ausferritic matrix, the cast iron having a silicon content of from about 1.6 to about 2.4 weight percent, and a carbon content of from about 1.6 to about 2.2 weight percent, such that the c... | 08/18/1992 |
| 5082507 | Austempered ductile iron gear and method of making it An austempered ductile iron differential gear and method of manufacture. The gear is cast to near net shape in a vertical injection, flaskless moulding machine using delayed inmould inoculation to ensure greater homogeneity of the alloy melt. The gear cas... | 01/21/1992 |
| 4921036 | Methods of manufacturing a rear axlecase A rear axlecase is manufactured by casting the differential gear housing and the axle housings into an integral body from nodular graphite cast iron, and ensuring good ductility therefor by reducing the hardness as a whole on one hand, and ensuring toughn... | 05/01/1990 |
| 4911763 | Process for producing a low alloy white cast iron A process for producing a low alloy white cast iron is disclosed. The process comprises the steps of selecting one of a group of four alloying elements for a nickel, molybdenum/copper or modified low alloy iron; the four alloying groups consisting essenti... | 03/27/1990 |
| 4891076 | Gray cast iron having both increased wear resistance and toughness A method is disclosed for making gray iron having both increased wear resistance and impact toughness, comprising: (a) solidifying a hypoeutectic gray iron melt (i) to which has been added a eutectic carbide forming agent in an amount of 0.3-0.8% by weigh... | 01/02/1990 |
