Abstract: A nozzle for the cutting beard removal where by means of additional heat supply the beard is liquified and blown away by the kinetic energy of a gas jet are formed by an upper and a lower nozzle plate with fuel gas discharge openings and an oxygen slot formed between them which is feeding an ever increasing quantity of oxygen at its longitudinal ends. This is reached by the oxygen slot forming the discharge end of a cone emerging from a distribution chamber enlarged in its longitudinal direction.

Abstract: Forging processes are described for cast superalloys. The forgeability of superalloy materials is improved by the development of overaged microstructure. The total forging process is usually performed in a series of steps with intervening heat treatments to reform the overaged microstructure.

Abstract: Process for improving the crack growth behavior of titanium alloys containing substantial beta stabilizers and at least 3% molybdenum, such as Ti-6-2-4-6. The process includes the steps of forging above the beta transus temperature, cooling at a controlled rate through the beta transus temperature, heating to a temperature between 50.degree.-150.degree. F. below the beta transus temperature, cooling the alloy at a rate in excess of that produced by air cooling, and aging the material between about 900.degree. F. and 1100.degree. F. The resultant material has substantially improved crack growth behavior when contrasted with material processed according to the prior art.

Abstract: Steel alloys for long-term exposure to neutron flux have a martensitic microstructure and contain chromium, carbon, tungsten, vanadium and preferably titanium. Activation of the steel is held to within acceptable limits for eventual surface disposal by stringently controlling the impurity levels of Ni, Mo, Cu, N, Co, Nb, Al and Mn.

Abstract: A flame cutting machine for dividing moving bars, particularly hot and cold billets, in continuous casting units during the casting operation. The flame cutting machine generally comprises a double jacket through which a cooling medium flows and through which bearing eyes for the shafts of the rotors are welded. The double jacket has two U-shaped shells arranged concentrically with branches of the inner shell extending further upward than the branches of the outer shell. In addition, a lengthwise closing plate extends from the outer shell to the inner shell.

Abstract: A ceramic surface-metallic core particle composite fine powder material is disclosed, composed of fine particles each having a metallic core and a ceramic surface layer, in which the average value of the ratio of the thickness of the surface layer of a powder particle to the radius of the particle is substantially greater than 0.05. A method and an apparatus for making this material from core metal and a gas which combines with the core metal to form the ceramic outer layer are also described, in which a gaseous mixture of vapor of the core metal and the gas is passed through a convergent-divergent nozzle and is thereby rapidly cooled by adiabatic expansion so that the core metal as it solidifies forms metal cores for fine particles while the gas reacts with the outer layers of these particles to form ceramic surface layers.

Abstract: An improved process for producing superfines of metal is disclosed, which comprises reacting a metal halide containing gas with a reducing gas by causing to flow both the stream of a metal halide containing gas and the stream of a reducing gas concurrently but at different velocities so as to form an interfacial instability region in the reaction zone, and nuclei are formed in said instability region whereas said reaction zone is quenched (cooled) to inhibit the excessive growth of said nuclei. Application of a magnetic field to the reaction zone can enhance the degree of fineness and magnetic properties of the superfines thus produced.

Abstract: A method for producing metal alloys with improved properties such as a high modulus of elasticity, includes:(a) mixing fine metal powders and blending and milling said mix to a homogeneous condition,(b) forming the mix to a preliminary powder shape, said forming including exerting pressure on the mix,(c) and heating and transferring said powder shape to a hot refractory particle matrix and pressurizing said matrix so as to consolidate and densify the powder shape and to diffusion bond the powders into a solid body,(d) whereby the body may be subjected to a subsequent heat treatment serving to develop the uniformity, the grain structure, and the properties required in the alloy body.

Abstract: Chromium-containing iron or steel powder containing about 0.2-15 percent by weight of chromium, the rest being iron. The powder is characterized thereby that the chromium is present in the form of a powder-formed Fe-Cr-alloy in .alpha.-phase containing about 40-50 percent by weight of chromium and having a particle size essentially less than about 50 .mu.m; a process for manufacturing the powder and pressed and sintered products manufactured in a powder-metallurgical manner starting from the said powder.

Abstract: The ferritic stainless steel sheet involves a problem that the ridging is likely to generate at the forming step, such as the deep drawing step. The ridging is believed to be caused by a band structure in the hot rolled band, which structure exerting an influence on the formability of a cold rolled sheet. The ridging is prevented in the present invention by means of the combination of the three technical measures: incorporating aluminum into a ferritic stainless steel; heating a slab to a low temperature of 1200.degree. C. or less; and, carrying out a drastic hot rolling of at least one pass with the draft of 20%/pass or more. As a result of these technical measures, the structure of a hot rolled band is made and uniform and thus both the formability and anti-ridging property are enhanced.

Abstract: Disclosed herein is acicular ferromagnetic alloy particles for magnetic recording, containing Si, Cr, Ni and P and optionally Mg impregnated with phosphorus compound and silicon compound and process for producing the same.

Abstract: A molybdenum board which has excellent strength at high temperatures. The molybdenum board consists essentially of molybdenum recrystallized grains having a ratio L/W (L: length; W: width) of 2 or more and the width W of 5 to 1,000 .mu.m and containing 0.005 to 0.75% by weight of at least one element selected from Al, Si and K.

Abstract: Method for manufacturing a cladding tube of a zirconium alloy for the nuclear reactor fuel of a nuclear reactor fuel assembly by deformation of a starting tube and subsequent post-treatment of the deformed starting tube. The deformed starting tube is first ground on the outside surface for the post-treatment and is then subjected to a final annealing treatment.

Abstract: A method of manufacturing a fine multifilamentary Nb-Ti based superconducting wire was disclosed, which comprises a first step of processing an alloy consisting essentially of 10 to 50 atomic % of niobium, 40 to 75 atomic % of titanium and no higher than 30 atomic % of least one element selected from a group consisting of hafnium, tantalum and tungsten to form an alloy wire, a second step of covering said alloy wire with a stabilizer, cold drawing the resultant wire, bundling a plurality of stabilizer-clad wires thus obtained, covering the bundle of wires with a stabilizer, and extruding and cold drawing the resultant bundled wire to thereby form a multifilamentary wire, and a third step of thermally treating the resultant multifilamentary wire at a temperature of 250.degree. to 600.degree. C. and drawing the resultant treated multifilamentary wire to a reduction rate of 30 to 99.9%. The third step is carried out more than once.

Abstract: The oxygen content of tantalum is reduced by intimately contacting the tantalum with an alkali metal halide, reacting them in a non-oxidizing atmosphere at a maximum temperature of 1200.degree. C. to form and expel the tantalum halide and alkali metal oxide formed by the reaction, and then raising the temperature to 1400.degree. C. for no longer than 10 min. to volatilize any excess alkali metal halide. The tantalum may be in the form of a powder or a porous sintered pellet, and an improved product for electrolytic capacitors, with lower leakage current, is obtained.

Abstract: A plasma spray powder comprising a uniform powder blend of silicon nitride and a plasma meltable metal produces a coating having some of the properties of silicon nitride.

Abstract: A method of enhancing the creep properties of thermal mechanical processed creep resistant platinum-based alloys by heating the alloy, which is dispersion-strengthened with yttria, to a temperature not less than about 2800.degree. F. for a period of not less than about 6 hours and cooling the alloy in air.

Abstract: A flame spray powder composition is provided for the thermal coating of workpieces comprising a mechanical mixture of hard particles of material and particles of a matrix-forming self-fluxing alloy selected from the group consisting of Ni-base, Fe-base and Co-base self-fluxing alloys. The hard material is a fused tungsten carbide alloy consisting essentially by weight of about 3 to 7% C, an effective amount of iron ranging up to about 3%, up to about 2% total of other alloying elements and the balance essentially tungsten. Substantially each of the fused tungsten carbide alloy particles is characterized by a metal coating having a melting point higher than the melting point of the self-fluxing alloy and having an average particle size less than about 75 microns. The proportion by weight of the coated hard particles in the mixture ranges from about 10% to 95%, with the balance essentially said self-fluxing alloy.

Abstract: A method and apparatus for quenching a torch-cut work-piece wherein a spray curtain is mounted on a bearing with approximately 30.degree. of the circular spray eliminated immediately behind the direction of travel. The spray direction is controlled by a friction operated directional spray arm carrying an idler wheel.

Abstract: A process for dispersion strengthing of atomized alloy particles by internal oxidation is substantially improved by providing atomized particles substantially free of oxide surface film to enhance the efficiency of the internal oxidation step. The atomized alloy particles can be produced by dry collection to prevent oxide film formation, or alternatively, the oxide surface film can be removed by mechanical action removal or by chemical leaching.