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| Number | Title | Issue Date |
| 7967922 | Ferrous abrasion resistant sliding material A ferrous abrasion resistant sliding material capable of improving seizing resistance, abrasion resistance and heat crack resistance is provided. The ferrous abrasion resistant sliding material has a martensite parent phase which forms a solid solution with carbon o... | 06/28/2011 |
| 7611590 | Wear resistant alloy for valve seat insert used in internal combustion engines This invention related to a high carbon and high molybdenum/tungsten martenisitic type iron base alloy with excellent hot hardness and wear resistance for making valve seat insert. The alloy comprises of 2.05-3.60 wt % carbon, 0.1-3.0 wt % silicon, 0-2.0 wt % mangan... | 11/03/2009 |
| 7163593 | Iron-based alloy and method for production thereof An iron-based alloy comprises 1.5 to 2.5 wt % of C, 0.25 to 4.75 wt % of Ni, and W and V in quantities surrounded by the line L as shown in FIG. 1 of the attached drawings with a balance of Fe and inevitable impurities. The iron-based alloy is obtained by a f... | 01/16/2007 |
| 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 |
| 6916444 | Wear resistant alloy containing residual austenite for valve seat insert This invention related to a novel iron base alloy using residual austenite to improve wear resistance for valve seat insert material for internal combustion engines. The residual austenite is stable even after heat treatment and liquid nitrogen chilling. The alloy c... | 07/12/2005 |
| 6908589 | High manganese cast iron containing spheroidal vanadium carbide and method for making therof The purpose of the present invention is to provide high manganese cast iron containing spheroidal vanadium carbide and method for making which is nonmagnetic as well as superior mechanical properties such as wear-resistance and toughness, and further does not requir... | 06/21/2005 |
| 6866816 | Wear and corrosion resistant austenitic iron base alloy A unique austenitic iron base alloy for wear and corrosion resistant applications, characterized by its excellent sulfuric acid corrosion resistance and good sliding wear resistance, is useful for valve seat insert applications when corrosion resistance is required.... | 03/15/2005 |
| 6861029 | Nodular cast iron alloy A modified nodular cast iron alloy contains positive additions of boron and silicon in a content of greater than 2.4% by wt. ... | 03/01/2005 |
| 6805757 | Casting material for indefinite rollers with sleeve part and method for producing the same A method of the production and processing of alloyed casting material for a working part of an indefinite chill roll, a corresponding casting material and a composite indefinite chill roll incorporating the casting material. The method comprises providing a melt of ... | 10/19/2004 |
| 6764554 | Refining element for a refining disk Refining elements for refining discs for disc refiners for the manufacture of mechanical pulp are disclosed, having improved wear resistance by utilizing alloys with precipitated carbides. An improved service life is obtained with a refining disk having the followin... | 07/20/2004 |
| 6761777 | High chromium nitrogen bearing castable alloy The present invention is directed to a corrosion and erosion resistant High Chromium, Nitrogen bearing alloy, comprising the following composition in wt. %: 28-48 chromium, 0.01-0.7 nitrogen, 0.5-30 manganese, 0.01-5 boron, 0.3-2.5 carbon, up to 0.01-25 cobalt plus ... | 07/13/2004 |
| 6723182 | Martensitic alloy steels having intermetallic compounds and precipitates as a substitute for cobalt A cobalt-free martensitic steel exhibiting good response to hardening and resistance to softening at high temperatures, the steel containing sub-micron and nano-structural precipitates and intermetallic compounds of silicon, nickel, aluminum, copper and manganese. | 04/20/2004 |
| 6669790 | Iron-based casting alloy An iron-based casting alloy and a process for making the alloy are provided by combining an iron-carbon-chromium system with primary carbides of vanadium, niobium, titanium, or combinations thereof without any eutectic carbides of vanadium, niobium and ti... | 12/30/2003 |
| 6511554 | Stainless spheroidal carbide cast iron material The present invention relates to stainless spheroidal carbide cast iron material is such: comprises iron (Fe) as its main component, C 0.6~4.0% and V 4~15% as its necessary components, P 0.01~0.15%, S 0.01~0.05% Al 0.05~1.0%, and Mg 0.01~0.2% as gas ... | 01/28/2003 |
| 6406563 | Stainless spheroidal carbide cast iron The present invention relates to stainless spheroidal carbide cast iron is such: comprises Fe as its main component;, C 0.6~4.0% and V 4~15% as its necessary components, P 0.01~0.15%, S 0.01~0.05%, and Al 0.05~1.0% as bubble assistants, and Ni 4~15%,... | 06/18/2002 |
| 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 |
| 6180266 | Cutting tool A cutting tool having cutting edges made of a high speed tool steel exhibiting very high wear and anti-chipping resistances, and sufficient toughness is provided. The high speed tool steel consists essentially of by weight C:0.6 to 1.8%, Si:1.2% max, Mn:0... | 01/30/2001 |
| 6057045 | High-speed steel article A powder-metallurgy produced high-speed steel article having a combination of high hardness and wear resistance, particularly at elevated temperatures. This combination of properties is achieved by the combination of W, Mo, V, and Co. The article is parti... | 05/02/2000 |
| 5853504 | Material for lapping tools and lapping surface plate using the same A lapping surface plate consisting of an Fe-base material containing 0.8 to 3.5 wt % of C, 1 to 7 wt % of Si, 5 to 15 wt % of Ni, and 1 wt % or less of Mn, the balance substantially being Fe, further containing 0.1 wt % or less of at least one element sel... | 12/29/1998 |
| 5738734 | Centrifugal cast roll shell material A centrifugal cast roll shell material composed of a granular MC carbide, graphite and C: 2.5 to 4.7%, Si: 0.8 to 3.2%, Mn: 0.1 to 2.0%, Cr: 0.4 to 1.9%, Mo: 0.6 to 5%, V: 3.0 to 10.0% and Nb: 0.6 to 7.0%, satisfying the following formulae (1), (2), (3) a... | 04/14/1998 |
| 5445685 | Transformation process for production of ultrahigh carbon steels and new alloys Ultrahigh carbon steels with superplastic properties are produced by heating a steel containing ferrite and carbide phases to a soaking temperature approximately 50° C. above the A1 transformation temperature, soaking the steel above the A | 08/29/1995 |
| 5407744 | Method for producing steel wires intended for the manufacture of flexible conduits, steel wires obtained by this method, and flexible conduits reinforced by such wires A method of producing steel wires intended for the manufacture of flexible conduits, steel wires obtained by this method, and flexible conduits reinforced by such wires is characterized by the fact that, for a given strain-hardening rate of the initial wi... | 04/18/1995 |
| 5344477 | Prealloyed high-vanadium, cold work tool steel particles Prealloyed high-vanadium, cold work tool steel particles are provided for use in the powder-metallurgy production of tool steel articles. The particles are of a cold work tool steel alloy having an MC-type vanadium carbide dispersion of a carbide particle... | 09/06/1994 |
| 5316596 | Roll shell material and centrifugal cast composite roll A roll shell, material is composed of C: 1.5~3.5%, Si: 1.5% or less, Mn: 1.2% or less, Cr: 5.5~12.0%, Mo: 2.0~8.0%, V: 3.0~10.0%, Nb: 0.6~7.0%, and satisfies the following formulae (1) and (2): V+1.8 Nbࣘ7.5 C-6.0 (%) (1) 0.2... | 05/31/1994 |
| 5252149 | Ferrochromium alloy and method thereof An erosion and corrosion resistant ferrochromium alloy comprising the following composition, in wt. %, 34-50 chromium, 1.5-2.5 carbon, up to 5 manganese, up to 5 silicon, up to 5 molybdenum, up to 10 nickel, up to 5 copper, up to 1% of each of one or more... | 10/12/1993 |
| 5225007 | Method for wear-resistant compound roll manufacture The wear-resistant compound roll is constituted by a shell portion made of an iron-base alloy having the composition consisting essentially of 1.0-3.5 weight % of C, 3.0 weight % or less of Si, 1.5 weight % or less of Mn, 2-10 weight % of Cr, 9 weight % o... | 07/06/1993 |
| 5215604 | Long-wear packerhead segment A wear segment for use in a concrete pipe making machine is provided which has increased wear resistance as contrasted to wear segments currently in use. The segment has a Rockwell C hardness of about 68 in the heat treated condition and has very improved... | 06/01/1993 |
| 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 |
| 5104458 | Method for manufacture of a roll ring comprising cemented carbide and cast iron The present invention discloses a roll ring for hot and/or cold rolling. The rolling track comprises one or several cemented carbide rings, which are cast into a casing made by an iron alloy. The cast alloy comprising a materially graphitic cast iron, whi... | 04/14/1992 |
| 5096515 | High strength high chromium cast iron and valve rocker arm made thereof A high strength high chromium cast iron contains fine particle precipitated hard carbide. The precipitated hard carbide has an average particle size of 20 μm or less and hardness of Hv 500 or more in martensite base matrix, and has area ratio in a range ... | 03/17/1992 |
| 5049354 | Low thermal expansion cast iron This invention is directed to a cast iron having a graphite structure in an austenitic iron matrix and consisting essentially of, in weight %, at least about 1.0% and not more than about 3.5% of carbon, not more than about 1.0% of silicon, at least about ... | 09/17/1991 |
| 4955414 | Bearing having a valve seat for a rotary compressor A bearing having a valve seat for a rotary compressor which is made of austenitic cast iron with graphite crystallized in an austenite matrix in the form of an A type, C type or A/C combined type under the ISO classification, maximum length crystallized g... | 09/11/1990 |
| 4853047 | Work-performing member for farm machines The work-performing member for a farm machine has a cutting edge made of a high-carbon steel containing graphite in structurally free state in an amount of 0.5 to 1.32 percent of the total mass of the material.... | 08/01/1989 |
| 4536232 | Erosion and corrosion resistant cast iron alloy containing chromium, nickel and molybdenum Cast iron alloy preferably of about 1.6 carbon, 2 nickel, 2 molybdenum, 28 chromium, and up to 1 of an additional element, balance substantially iron characterized by a matrix substantially entirely of tempered martensite with minimal retained austenite, ... | 08/20/1985 |
| 4435226 | Wear resistant cast iron alloy with spheroidal graphite separation and manufacturing method therefor A wear resistant cast iron alloy having a great strength for the manufacture of wear resistant machine parts having a tempered structure with embedded graphite spheroids formed in very fine form by the decomposition of ledeburite. The alloy has a spheroid... | 03/06/1984 |
| 4411713 | Shell for a composite roll In the manufacturing of a shell for a cast iron rolling mill roll, heating the chill prior to casting so that the chill at the time pouring commences is in the approximate range of 300° to 600° F. in order to decrease the cooling rate of the metal after... | 10/25/1983 |
| 4395284 | Abrasion resistant machinable white cast iron A cast iron alloy composition comprising 2.5-3.5% carbon, 0.5-1.0% manganese, 0.25-1.5% silicon, 13-19% chromium, 0.8-3.0% nickel, balance essentially iron which is machinable in the annealed condition and abrasion resistant in the hardened condition. The... | 07/26/1983 |
| 4386969 | Ferrous alloy and abrasion resistant articles thereof An abrasion resistant alloy consists essentially of (by weight): with not substantially more than trace quantities of sulfur, phosphorous and tungsten. The alloy is suitable for forming into sealing rings of grit seal assemblies, which rotate relative to one a... | 06/07/1983 |
| 4297135 | High strength iron, nickel and cobalt base crystalline alloys with ultrafine dispersion of borides and carbides Alloys, of iron, cobalt, nickel and chromium containing both metalloids and refractory metals are disclosed. The alloys are rapidly solidified at cooling rates of 105 -107 ° C./sec so as to produce an ultrafine grained metastable cr... | 10/27/1981 |
| 4221612 | Grinding members Forged grinding members of white cast iron containing chromium composed of a solid martensitic or austenitic solution containing a secondary chromium carbides and primary or eutectic chromium carbides of the M7 C3 type, which are fin... | 09/09/1980 |
