| Patent Number |
Title Of Patent |
Date Issued |
| 4883717 |
Vibration-damping material |
November 28, 1989 |
| A vibration-damping material consisting of two metal plates and a vibration-damping layer of thermoplastic resin interposed between the two metal plates, in which said thermoplastic resin has a percentage of wlongation at 20.degree. C. of 30% or more, preferably 50% or more, a peak t |
| 4881987 |
Process for direct softening heat treatment of rolled wire rods |
November 21, 1989 |
| Direct softening heat treatment of rolled wire rods comprises the steps of:providing wire rods by hot- or warm-rolling, and immediately following rolling, coiling the rolled wire rods in an annealing furnace. Apparatus therefor comprises an annealing furnace provided with an externally or |
| 4874564 |
Molding process and device therefor |
October 17, 1989 |
| A molding process of a molding compound containing an ingredient such as a binder, e.g., pitch or a thermosetting resin which generate gas before being set, is disclosed, wherein the molding compound is heated and molded under pressure according to a special temperature pattern. First, t |
| 4871194 |
Oil well pipe joint and manufacturing method therefor |
October 3, 1989 |
| The present invention relates to an oil well pipe joint having improved resistance to galling and to a process for manufacturing the same, which comprises a porous blast-plated layer provided at least on a metal sealing portion by blasting soft metal particles such as of zinc and aluminu |
| 4867786 |
Electromagnetic stirring method |
September 19, 1989 |
| In an electromagnetic stirring method, one or two electromagnetic inductors are provided to define an internal space therein or therebetween, a plurality of pairs of opposed magentic poles are provided on the inner side walls of the electromagnetic inductors defining the space, and the |
| 4859415 |
Method of improving the resistance of Ti-based alloys to corrosion in deep-well environments |
August 22, 1989 |
| A method of improving the resistance of oil-well tubular products made of .alpha.-type or (.alpha.+.beta.)-type Ti-based alloys to corrosion in a deep-well environment at high temperatures is disclosed. The method is characterized by adding, as an alloying element, (A) at least one plati |
| 4846884 |
Process for producing cold-bonded iron ore for use in a blast furnace |
July 11, 1989 |
| A process for producing cold-bonded or non-fired iron ore which introduced as a charge into a blast furnace. The iron ore, which contains 10 to 70% of particles having a diameter ranging from 1 to 10 mm, is molded into a block, preferably by a pressure-molding method, a shock-molding met |
| 4842823 |
Austenitic steel having improved high-temperature strength and corrosion resistance |
June 27, 1989 |
| An austenitic steel having improved high-temperature strength as well as corrosion resistance is disclosed. The steel consists essentially of, by weight %:C: not more than 0.15%, Si: not more than 1.0%,Mn: not more than 10%, Cr: 20-30%,Ni: 30-55%,at least one of Mg and Ca in a total amount o |
| 4839242 |
Titanium-clad steel and a method for the manufacture thereof |
June 13, 1989 |
| A titanium-clad steel and a method for its manufacture are disclosed. The titanium-clad steel comprises a steel base metal, a nickel insert which is bonded to the steel base metal, a low-carbon ferrous metal insert which contains at most 0.01 weight % of carbon and which is bonded to the |
| 4834345 |
Process and apparatus for direct softening heat treatment of rolled wire rods |
May 30, 1989 |
| Direct softening heat treatment of rolled wire rods comprises the steps:providing wire rods by hot- or warm-rolling, andimmediately following rolling, coiling the rolled wire rods in an annealing furnace. Apparatus therefor comprises an annealing furnace provided with an externally or intern |
| 4827750 |
Method of piercing and manufacturing seamless tubes |
May 9, 1989 |
| In a method of manufacturing seamless tubes according to the present invention, piercing from a solid billet can be accomplished through one pass by means of a piercing mill ao the present invention, piercing from a solid billet can be accomplished through one pass by means of a piercing |
| 4826902 |
Coating composition with improved rust-preventing properties for use in preparing lubricated ste |
May 2, 1989 |
| A coating composition based on an acrylic resin which is useful for preparing lubricated steel products such as steel sheets or tubes is disclosed. The coating composition contains as additives a rust preventive which is a mixture of a sulfonamidecarboxylic acid and an cyclic amine and |
| 4825674 |
Metallic tubular structure having improved collapse strength and method of producing the same |
May 2, 1989 |
| Disclosed is a metallic tubular structure having an improved collapse strength characterized in that the tubular structure has a circumferential residual tensile stress left in the inner peripheral surface thereof, said residual stress ranging between 0 and 15 % of the yield stress of th |
| 4824373 |
Swaged metal denture base |
April 25, 1989 |
| A denture base of pressure-formed, superplastic alloy plate, and a method of making a metal denture base, includes providing a superplastic alloy plate and a female die having a finishing surface, and pressure-forming the alloy plate on the finishing surface of the female die at a te |
| 4814048 |
Pb alloy insoluble anode and continuous electroplating of zinc using it |
March 21, 1989 |
| A Pb alloy insoluble anode and continuous electroplating of zinc using the same are disclosed, in which the Pb alloy consists essentially of 0.5-13 weight % of In or 0.5-13 weight % of In and 0.5-10 weight % of Ag and a balance of Pb with incidental impurities in which the amount of Sn i |
| 4812177 |
Hot working method for producing a superplastic ferrous duplex-phase alloy |
March 14, 1989 |
| A superplastic hot working method for a duplex-phase, nitrogen-containing ferrous alloy and stainless steel, and a superplastic duplex-phase ferrous alloy are disclosed. The ferrous alloy comprises: at least one of Si and Mn in an amount of not less than 0.5 % and not less than 1.7%, |
| 4806438 |
Titanium-clad steel and method for the manufacture thereof |
February 21, 1989 |
| A titanium-clad steel with improved bonding properties and a method for the manufacture thereof are disclosed. The titanium-clad steel is characterized by comprising a Ti-cladding, a base metal steel, and an insert between them, the insert being made of an alloy consisting essentiall |
| 4802356 |
Apparatus of processing continuously cast slabs |
February 7, 1989 |
| A method and apparatus of processing a continuously cast slab to prevent the formation of surface cracks by applying plastic strains to the surface layer of the slab in which a process of solidification is taking place. The method comprises pressing a projection against the slab surface |
| 4799972 |
Process for producing a high strength high-Cr ferritic heat-resistant steel |
January 24, 1989 |
| A high-strength high-Cr ferritic, heat-resistant steel exhibiting improved high-temperature, long-term creep strength and a process for producing the same are disclosed. The steel consists essentially of, by weight %:C: not more than 0.2%,Si: not more than 1.0%,Mn: 0.1-1.5%,P: not more than |
| 4796798 |
Method of and apparatus for continuous production of seam-welded metal tubing |
January 10, 1989 |
| An apparatus for continuous production of seam-welded steel tubing is proposed. The apparatus includes a series of shaping rolls for shaping a strip taken out from a strip coil into a tubular intermediate product, the roll series including a finpass roll group. The tubular product is |
| 4788099 |
Vibration-damping material with excellent workability |
November 29, 1988 |
| A vibration-damping material with excellent workability consisting of two metal plates and a vibration-damping layer of a thermoplastic resin interposed between the two metal plates, in which the vibration-damping layer of a thermoplastic resin consists of a film as a middle layer and a |
| 4771931 |
Continuous production of seam-welded metal tubing |
September 20, 1988 |
| A process of continuous production of seam-welded steel tubing is concerned.A steel strip is taken out from a strip coil and conveyed to a tube-preshaping step including a plural of shaping roll stand positions. In the preshaping step, the strip is laterally rounded up gradually from |
| 4770703 |
Sintered stainless steel and production process therefor |
September 13, 1988 |
| A sintered stainless steel exhibiting improved resistance to stress corrosion cracking which comprises a matrix phase and a dispersed phase and a process for manufacturing same are disclosed. The dispersed phase is of an austenitic metallurgical structure and is dispersed throughout the |
| 4764657 |
Automatic tab plate welding apparatus |
August 16, 1988 |
| An automatic tab plate welding apparatus welds a tab plate to the predetermined corner of a plate. A tab plate table supports the tab plate and determines the position of the tab plate relative to the forward direction of the plate, the widthwise direction of the plate, the vertical |
| 4761980 |
Method of feeding material to hot forging machine |
August 9, 1988 |
| Disclosed is a method and apparatus for feeding a material to a hot forging machine in a forging line in which a coiled material is uncoiled, straightened, fed intermittently by pinch rollers through a heating device, cut by a cutting device and then fed into a hot forging machine. T |
| 4742324 |
Sheath heater |
May 3, 1988 |
| A corrosion-resistant steel tube such as a sheath heater steel tube and boiler tube which exhibit improved resistance to dry corrosion under high temperature dry-corrosive conditions in the presence of chlorides is disclosed. The steel consists essentially of, in % by weight:C: not more |
| 4738688 |
Process for gasifying carbonaceous material |
April 19, 1988 |
| A process including an apparatus for use therein for gasifying a carbonaceous material by means of blowing said carbonaceous material onto a high temperature molten iron bath through a top-blowing lance of the non-immersion type is disclosed. The apparatus comprises a furnace body co |
| 4732607 |
Method of controlling the stirring strength and flow rate of a jet of gas blown through a lance |
March 22, 1988 |
| A method of controlling independently of each other the stirring strength of a jet of oxygen gas and the flow rate of the oxygen gas to be blown onto a molten metal bath in a top-blowing oxygen furnace is disclosed. The method comprises providing an oxygen supplying conduit with a means |
| 4729502 |
Apparatus for treating ends of large-diameter welded pipe |
March 8, 1988 |
| A large-diameter welded steel pipe having a straight seam and tab plates attached to its ends as extensions of the seam is laid along a setting line with the seam upward. An apparatus for treating the ends of such a pipe has a tab plate cutting unit and a bead removing unit. The tab plat |
| 4727925 |
Endless track continuous casting machine |
March 1, 1988 |
| An endless track continuous casting machine having a pair of upper and lower endless belts facing each other in a spaced apart relationship and travelling in a downwardly slanted direction which form the long side walls of a mold. Dam blocks continuously and closely disposed and pinched |
| 4722755 |
Hot working method for superplastic duplex phase stainless steel |
February 2, 1988 |
| A duplex .alpha. (ferrite) and .gamma. (austenite) phase stainless steel exhibiting superplasticity at high strain rate is disclosed. The steel comprises Fe, Cr, and Ni as primary elements, and N in an amount of 0.05-0.25%, preferably 0.1-0.2% by weight. The amount of Cr+Mo+1.5xSi is |
| 4721600 |
Superplastic ferrous duplex-phase alloy and a hot working method therefor |
January 26, 1988 |
| A superplastic hot working method for a duplex-phase, nitrogen-containing ferrous alloy and stainless steel, and a superplastic duplex-phase ferrous alloy are disclosed. The ferrous alloy comprises: at least one of Si and Mn in an amount of not less than 0.5% and not less than 1.7%, |
| 4715909 |
Nickel-chromium alloy in stress corrosion cracking resistance |
December 29, 1987 |
| A nickel-chromium alloy excellent in a stress corrosion cracking resistance which is obtained by carrying out an annealing treatment under specific conditions, said alloy having the following composition:the residue comprising substantially Fe. A nickel-chromium alloy further including 0 |
| 4714501 |
Method for thermal treatment of alloy for heat transfer pipes |
December 22, 1987 |
| An alloy for heat transfer pipes excellent in an alkali stress corrosion cracking resistance which is obtained by heating and retaining said alloy at a temperature within the range of a temperature (T.degree.C.), at which a carbide in said alloy is thoroughly solubilized, to T+100.degree |
| 4710237 |
Method for thermal treatment of nickel based alloy materials |
December 1, 1987 |
| A method for a thermal treatment of a nickel based alloy, characterized in that said nickel based alloy for a material which will be subjected to a high-temperature and high-pressure water or vapor comprises, in terms of % by weight, 58% or more of Ni, 25 to 35% of Cr, 0.003% or less of |
| 4710215 |
Process for distillation-crystallization of zinc carbonate |
December 1, 1987 |
| A process for distillation-crystallization of a zinc carbonate which is characterized in that a distillation column having a plurality of plates or trays is used for crystallizing basic zinc carbonate (2ZnCO.sub.3.3Zn(OH).sub.2 or ZnCO.sub.3.3Zn(OH).sub.2 H.sub.2 O) from a solution o |
| 4709572 |
Method of processing continuously cast slabs |
December 1, 1987 |
| A continuously cast slab is processed to prevent the formation of surface cracks by applying plastic strains to the surface layer of the slab in which a process of solidification is taking place. The method comprises pressing a projection against the slab surface under specified conditio |
| 4707415 |
Steel strips with corrosion resistant surface layers having good appearance |
November 17, 1987 |
| A surface-coated steel strip having improved corrosion resistance as well as a good surface appearance is disclosed. The steel strip comprises a zinc alloy layer plated on the steel strip, and a passive-state layer 0.005 to 1.0 .mu.m thick which is applied on top of the plated zinc layer |
| 4697744 |
Process for the production of iron oxide fine powder |
October 6, 1987 |
| A process for producing iron oxide fine powder of high purity from an oxide iron ore such as hematite or magnetite by only physical processing is disclosed, which comprises the steps of: providing a preliminarily ground raw material powder of an oxide iron ore or a mixture thereof having |
| 4693614 |
Apparatus for detecting slag outflow |
September 15, 1987 |
| An apparatus for detecting slag outflow when a molten metal covered by molten slag is poured from one vessel to another by receiving the thermal radiation energy at the microwave frequencies emitted from the pouring stream of the molten metal from said one vessel to another to measure a |
| 4689146 |
System for dissolution-purification of Zn-containing materials |
August 25, 1987 |
| A system for dissolution-purification of Zn-containing materials which comprises a dissolving means for dissolving the Zn-containing materials and an ion-exchanging means for separating heavy metal ions included in the solution resulting from the dissolving means. In these means, the |
| 4673877 |
Zirconium liner thickness measuring method and an apparatus therefor for a zirconium alloy tube |
June 16, 1987 |
| A method and apparatus for measuring a liner thickness of a zirconium liner provided at the inner surface of a zirconium alloy tube, the principle of measurement of which is to insert coils into the tube to generate an eddy current, detect the impedance component in the direction perpend |
| 4671929 |
Austenitic stainless steel with improved resistance to corrosion by nitric acid |
June 9, 1987 |
| An austenitic stainless steel exhibiting improved resistance to corrosion caused by nitric acid is disclosed, which consists essentially of:C: not more than 0.03% by weight, Si: 2-6% by weight,Mn: 0.1-8% by weight, Cr: 20-35% by weight,Ni: 17-50% by weight, Mg: not more than 0.02%,at least one o |
| 4669293 |
Continuous rolling method and continuous rolling mill |
June 2, 1987 |
| A continuous rolling mill is constructed by arranging driven horizontal rolling mills and undriven vertical rolling mills alternately and determining the values of the thickness of the rolled material between adjacent stands, the interaxial distance between work rolls, and the diamet |
| 4663021 |
Process of producing carbonaceous pitch |
May 5, 1987 |
| A continuous process of producing carbonaceous pitch, including heat-treating an aromatic heavy oil for obtaining a first cracked product, and thermally cracking the first product in a cracking zone by direct contact with a gaseous heat transfer medium to obtain distillable cracked c |
| 4659631 |
Corrosion resistant duplex plated sheet steel |
April 21, 1987 |
| A corrosion resistant duplex plated sheet steel is disclosed, which comprises a sheet steel having on at least one surface thereof a lower layer of Zn base alloy plating and an upper layer thereon selected from a zinc plating having a coating weight of 0.1-5 g/m.sup.2 and a zinc alloy |
| 4652315 |
Precipitation-hardening nickel-base alloy and method of producing same |
March 24, 1987 |
| A precipitation-hardening Ni-base alloy exhibiting improved resistance to corrosion under a corrosive environment containing at least one of hydrogen sulfide, carbon dioxide and chloride ions and method of producing the same are disclosed. The alloy is of the .gamma."-phase, or (.gam |
| 4651549 |
Method for correcting rolled material |
March 24, 1987 |
| In a leveling line, the shape of a rolled material is corrected by applying a longitudinal tensile force to the material on the entrance or the exit side or both the sides of a roller leveler or within it, a warp of the material is corrected by applying a bending tension to the material |
| 4649858 |
Repairing apparatus for furnace wall |
March 17, 1987 |
| This invention relates to a repairing apparatus for an industrial furnace wall using a plasma spray gun. The plasma flame of the gun traces the damaged part to be repaired by moving the gun in three-dimensional directions (up-and downwardly, right-and leftwardly, and forwardly and ba |
| 4642127 |
Method for cooling blast furnace gas in an heat recovery system |
February 10, 1987 |
| A method and an apparatus for cooling blast furnace gas for use in a blast furnace gas treating system having incorporated therein a coarse particle removing unit having a dust collecting box. Nozzles extend through the box as arranged circumferentially thereof at a plurality of location |
