| Patent Number |
Title Of Patent |
Date Issued |
| 4242781 |
Variable crown sleeve roll |
January 6, 1981 |
| In a variable crown sleeve roll, the inner peripheral surface of a sleeve is sealingly secured at opposite ends to the opposite ends of the outer peripheral surface of an arbor to define a chamber of a predetermined shape therebetween in the central portion of the sleeve. A pressurized |
| 4242196 |
Mass production system of highly aromatic petroleum pitch |
December 30, 1980 |
| The mass production system disclosed herein provides a method for producing highly aromatic petroleum pitch, comprising, preheating a liquefied petroleum residuum to a temperature of 450.degree.-520.degree. C. by passing the same through a tubular heater for 0.5-15 minutes, feeding the |
| 4240827 |
Nonmagnetic alloy steel having improved machinability |
December 23, 1980 |
| A nonmagnetic alloy steel containing by weight 5 to 30% Mn and 0.005 to 0.5% N (nitrogen), satisfying the condition that 100/9(C%+N%)+2(Mn%+Cu%) is more than 25% and containing at least one element to improve the machinability of the steel. Since the steel contains no Ni, the steel is |
| 4214311 |
Method and apparatus for measuring insulation resistance |
July 22, 1980 |
| A method for continuously measuring and monitoring insulation resistance values of a non-grounded DC circuit in an operative condition and an apparatus for practicing the method are disclosed. This method is to calculate various values including the values of the insulation resistanc |
| 4210023 |
Method and apparatus for measuring slag foaming using microwave lever meter |
July 1, 1980 |
| A method for continuously measuring slag foaming within a converter during blowing and an apparatus for practising the method are disclosed.In this method, the foaming slag level is determined by detecting and processing a beat signal developed between the frequency-modulated transmitted |
| 4201650 |
Apparatus for continuous electrolytic descaling of steel wire with mill scales |
May 6, 1980 |
| Mill scales formed on the surface of a steel wire are continuously removed by causing the wire to pass through a plurality of pairs of electrodes which are connected to an electric power source and arranged in series in an electrolytic cell without contacting the electrodes. This apparat |
| 4201574 |
Low carbon Ni-Cr austenitic steel having an improved resistance to stress corrosion cracking |
May 6, 1980 |
| Herein disclosed is a low carbon austenitic steel having an improved resistance to stress corrosion cracking. The austenitic steel consists essentially of, by weight; less than 0.029% of carbon; 1.5 to 4.0% of silicon; 0.1 to 3.0% of manganese; 23 to 45% of nickel; 20 to 35% of chrom |
| 4196335 |
Submerged arc welding process |
April 1, 1980 |
| Submerged arc welding process for 3.5% Ni steel which can provide a welded portion having a satisfactory impact resistance at low temperatures such as below minus 100.degree. C. In the process, use is made of a flux having a basicity as defined by a formula (CaO+MgO/SiO.sub.2) in weight |
| 4183902 |
Wet process for removing specific component from gas |
January 15, 1980 |
| Disclosed is a wet process for efficiently and economically removing a specific gas component and/or solid component from a gas containing the same wherein the gas is countercurrently contacted with a scrubbing liquid in a perforated or grid plate column without weir and downcomer and ha |
| 4154080 |
Means for supporting rool chocks in a rolling mill |
May 15, 1979 |
| There is disclosed an apparatus for supporting roll chocks of a work roll in a roll stand housing. This apparatus includes a thrust transmitting head member between the roll chock and a rolling force effecting mechanism such as a screw of a screw down mechanism. The head member has a sph |
| 4145210 |
Process for indurating dried pellets in a rotary kiln |
March 20, 1979 |
| Process for indurating dried pellets in a rotary kiln, characterized by charging the dried pellets and coke in the range of from about 2% by weight to about 20% by weight on the weight of the pellets into the rotary kiln, the coke having a size of from about 5 millimeters to about 30 |
| 4144736 |
Die forging press |
March 20, 1979 |
| An automatic rotary die forging press includes a pair of vertically arranged top and bottom die bolsters each having a polygonal section and rectangular faces corresponding to those of the other bolster. The top die bolster having as a bearing thereof a suspended holder supported in a ra |
| 4140526 |
Ferritic stainless steel having improved weldability and oxidation resistance |
February 20, 1979 |
| A ferritic stainless steel having improved weldability and oxidation resistance, consisting essentially of 11.0 - 20.0% by weight of Cr, less than 0.10% by weight of C, less than 1.5% by weight of Si, less than 1.5% by weight of Mn, less than 1.5% by weight of Zr, the ratio of (Zr%)/(C% |
| 4137104 |
As-rolled steel plate having improved low temperature toughness and production thereof |
January 30, 1979 |
| A high strength steel plate of improved low temperature toughness useful for making an arctic grade line pipe is provided with the addition of 0.8 - 2.0% by weight of Ni and 0.0005 - 0.0040% by weight of Ca, which may be used in the as-rolled state and manufactured through two step contr |
| 4133756 |
Method for dehydrating a mixed dust slurry |
January 9, 1979 |
| A method is disclosed for feeding a constant amount of filter cake to a dryer thereby producing dried powder having a predetermined moisture content so that materials of uniform quality are fed at a constant rate to the stages subsequent to the dryer in a pelletizing system of the iron a |
| 4131781 |
Submerged arc welding process for nickel containing steel |
December 26, 1978 |
| This invention provides a process involving submerged arc welding for nickel containing steel such as steel containing 3.5 weight percent of nickel. The process uses a bond type flux of specific composition to suppress the oxygen content in the weld metal. Further, the process utiliz |
| 4129439 |
Process for refining molten steel using ferroalloy |
December 12, 1978 |
| Disclosed is a ferroalloy for refining molten steel, composed of, by weight, 5 to 40% Si, 40 to 80% Mn, 1 to 10% Al, and the remainder of Fe with inevitable amounts of impurities. The ferroalloy is suitable for use in deoxidizing molten steel and adjusting the composition thereof. |
| 4127813 |
Method for balancing the sensitivity of two channels in a differential detection apparatus |
November 28, 1978 |
| A method is provided for balancing the sensitivity of two channels comprising intermittently-appearing pulse waves, such as the signals generated by respective sensors in a detecting couple which is used in the so-called differential detection of flaws in materials. The balancing of |
| 4116028 |
Rolling mill |
September 26, 1978 |
| A continuous rolling mill including roll stands arranged in series, each of which has a pair of work rolls and roll chocks for supporting them respectively. One of the roll chocks is mounted on the frame of the roll stand to be movable in a direction parallel to the direction of path of |
| 4113239 |
Apparatus for cooling slag |
September 12, 1978 |
| Molten slag is impinged against a target, for instance a rotary drum, gets itself granulated as it rebounces on the target surface, and is charged into a fluidized bed consisting of solid particles and gas so that slag granules may be quickly cooled without damaging the shape. |
| 4107969 |
Hot strip coiling mandrel |
August 22, 1978 |
| A hot strip coiling mandrel has a mechanism for engaging a plurality of equally circumferentially divided drum segments about a core shaft and for moving the core shaft or the drum segments relatively axially to thereby radially expand and collapse the drum defined by the segments. Top m |
| 4103143 |
Electrodes for tungsten inert gas welding |
July 25, 1978 |
| Electrode for tungsten inert gas welding having a body of a circular cross-section with a frustoconical tip end having a cone angle less than 120.degree.. The electrode is formed with an axially extending cylindrical recess at the tip end to leave an annular area. The configuration of th |
| 4102772 |
Apparatus for continuously electroplating on only a single surface of running metal strip |
July 25, 1978 |
| In a horizontal-type electroplating apparatus which includes a tank containing an electroplating bath for electroplating onto a single surface of running metal strip, the tank including anodes therein which have a width substantially equal to the width of the strip which passes through |
| 4102711 |
Method of producing a tube of ultra-high strength steel having remarkably improved ductility and |
July 25, 1978 |
| A method of producing a tube with an ultra-high tensile strength over 255 kg/mm.sup.2 and remarkably improved ductility and toughness is provided, which comprises preparing a mother tube through hot extrusion of a steel consisting essentially of 15.0 - 18.5% by weight of Ni, 12.5 - 15.0% |
| 4096725 |
Stripper guides for rolling mill |
June 27, 1978 |
| Stripper guides are disposed adjacent to upper and lower work rolls at the exit side of the rolling mill. In each of the stripper guides is rotatably provided a roll for straightening the turned up or turned down portion at the leading end of the strip. |
| 4089507 |
Method and apparatus for maintaining uniformity of mixed dust slurry stored in a basin |
May 16, 1978 |
| A method and apparatus is disclosed for maintaining the uniformity of a mixed dust slurry stored in a basin, the mixture comprising blast furnace dust slurry, steel furnace dust slurry (defined in the specification) and, if necessary, dry dust or filtrated cake and having a relatively hi |
| 4089196 |
Method of controlling inter-stand tension in rolling mills |
May 16, 1978 |
| There is disclosed a method of controlling inter-stand tension in rolling mills in which a tension measuring device is provided on each stand. The tension measuring device comprises a pair of load sensing devices provided respectively at the entry and delivery sides of the roll stand. Di |
| 4088213 |
Apparatus for transporting cylindrical steel articles |
May 9, 1978 |
| In an apparatus for transporting cylindrical steel articles by rolling down on inclined skid rails, a plurality of electromagnets are provided along extension of the skid rails so as to reduce the speed of rolling down of the articles repeatedly during transportation on the skid rails by |
| 4061743 |
Exhaust gas scrubbing process |
December 6, 1977 |
| Nitrogen oxides, or both sulfur oxides and nitrogen oxides are efficiently and economically removed from exhaust gas containing the same with an aqueous scrubbing suspension of alkaline earth metal compounds. The aqueous scrubbing suspension of alkaline earth metal compounds further |
| 4058700 |
Method for horizontal fillet welding of steel plates |
November 15, 1977 |
| A method and apparatus for horizontal fillet welding of steel plates, particularly coated or painted steel plates, in which two spaced apart welding wires are directed toward the line of intersection of a vertical steel plate and a horizontal steel plate to be welded together so that the |
| 4058017 |
Automatic probe feeding, setting and withdrawing apparatus |
November 15, 1977 |
| An automatic probe feeding, setting and withdrawing apparatus includes a probe container case provided with a probe dispensing mechanism for dispensing individual probes to a probe transfer mechanism. The probe transfer mechanism has a motor-driven probe push member provided at one e |
| 4057978 |
Apparatus for cooling pellets |
November 15, 1977 |
| An improved apparatus for cooling hot pellets discharged from a kiln or the like with water is presented wherein the pellets are charged through a chute into a water cooling bath while avoiding oxidation thereof. The cooling bath is covered with a hood and the pressure difference between |
| 4039320 |
Reducing material for steel making |
August 2, 1977 |
| During the reducing period in steel making, particularly in the making of stainless steel, the reduction of oxides in the slag and desulphurization of the molten steel are promoted by adding a reducing material, which is prepared by mixing uniformly aluminum powder and lime and the, like |
| 4037646 |
Molds for continuously casting steel |
July 26, 1977 |
| A copper or copper alloy mold for continuously casting steel is characterized in that the mold has a first layer formed on its interior surface and comprising at least one of nickel and cobalt and a second layer formed on the first layer and containing at least one of nickel and coba |
| 4035470 |
Process for removing sulfur oxides and/or nitrogen oxides from waste gas |
July 12, 1977 |
| Sulfur oxides and/or nitrogen oxides are removed from waste gas containing the same by adding chlorine dioxide or ozone gas to the waste gas in case where nitrogen monoxide is contained in the waste gas, and by scrubbing the waste gas with an aqueous scrubbing solution containing the sul |
| 4029739 |
Process for removing nitrogen oxides from waste gas |
June 14, 1977 |
| Nitrogen oxides can be efficiently removed from waste gas containing the same by oxidizing nitrogen monoxide into nitrogen dioxide, and then by scrubbing said waste gas with an aqueous scrubbing solution containing (a) a sulfur-containing reducing compound of alkali metals or ammonium su |
| 4019562 |
Automatic molding apparatus with means for controlling pouring rate |
April 26, 1977 |
| In an automatic molding apparatus, a Doppler speed meter is used to detect the rising speed of molten metal within a mold, and a nozzle stopper attached to a ladle in which the molten metal is contained is actuated in response to a difference between a detected speed signal and a speed |
| 4019130 |
Method for measuring wear of cooling cell assembly |
April 19, 1977 |
| In a high-temperature furnace such as a heating furnace, a melting furnace or a blast furnace, a cooling cell assembly of a ferromagnetic material such as iron is used in the furnace wall. The thickness of the cooling cell assembly can be detected by winding primary and secondary winding |
| 3975004 |
Vacuum degassing apparatus |
August 17, 1976 |
| A vacuum degassing apparatus is so constructed that molten steel is circulated or flowed between a ladle and a vacuum vessel through a tube, the molten steel is degassed in the vacuum vessel, the surrounding air is prevented from flowing into the ladle during a degassing operation by |
| 3962794 |
Automatic roll position measuring apparatus for continuous casting machine |
June 15, 1976 |
| In a continuous casting machine, displacement-electricity converters are mounted slidably longitudinally on a long guide having the same radius of curvature as that of the roller apron of the casting machine. The long guide is inserted between the rolls of the roller apron. The displacem |
| 3957949 |
Process for removing nitrogen oxides from gas |
May 18, 1976 |
| A process for efficiently removing nitrogen oxides with a very high rate from waste gas is provided wherein nitrogen monoxide contained in the gas is oxidized by chlorine dioxide or ozone, and then the oxidized gas is brought into contact with sodium chlorite in water solution in an |
| 3941572 |
Process for gas-absorption and dust-removal |
March 2, 1976 |
| A process for gas-absorption and dust-removal with an excellently high rate and capacity is provided wherein gas containing a specific gas component to be absorbed and/or fine dust to be removed is passed upwardly through a perforated plate or grid plate tower without weir and downcomer |
