Abstract: Salt-coated Mg granules are prepared by continuously and simultaneously feeding to a mixer a flow of molten Mg and a flow of molten salt at a predetermined ratio to provide up to about 68% molten Mg in the mixture, thereby dispersing the molten Mg as globules in the salt, continuously withdrawing the molten mixture from the mixer at a point distal to that of the feed, freezing the mixture, and milling the frozen mixture to pulverize the salt matrix and recovering salt-coated Mg particles therefrom.

Abstract: A fine cobalt metal powder is produced from pieces of relatively pure cobalt by dissolving the cobalt pieces in an aqueous solution of hydrogen iodide and iodine and forming a cobalt containing solid which is subsequently reduced to a fine cobalt metal powder.

Abstract: Novel electrically-conductive compositions comprising an organic resin matrix and flakes of a novel conductive silver powder which is characterized by extreme thinness. The novel silver powder, and a novel process for preparing metal powders, are also described.

Abstract: A process for producing an acicular ferromagnetic alloy particles mainly containing iron and magnesium, which comprises preparing a suspension of iron(II) hydroxide and water-soluble magnesium salt, the suspension having a pH value of at least 11 and containing the magnesium salt in an amount of 0.5 to 20.0 atomic % based on the amount of the iron(II) hydroxide in the suspension and calculated as the ratio of Mg to Fe(II), oxidizing the suspension with an oxygen-containing gas to form an acicular particles of iron(III) oxide hydroxide substituted with magnesium, forming coats of phosphorus compound and subsequent silicon compound on the acicular particles, heating the resultant particle at 500.degree. to 900.degree. C. under a non-reducing atmosphere and then reheating the particle thus treated at 350.degree. to 600.degree. C. under reducing atmosphere.

Abstract: The invention relates to the surface stripping treatment of objects consisting of iron with a high carbon content, the surface stripping treatment being carried out by means of a flame which is directed at the surface and which is formed by the combustion of a heating gas with oxygen, there being also provided in the impingement zone of the flame a gas which flows at a slower velocity than the heating gas and the oxygen and which also reacts endothermically with at least one component of the flame gases.

Abstract: During the flame cutting of a workpiece, a slag bead is produced and is removed by a scarfing burner directed only towards the cut surface of the workpiece.

Abstract: The present invention is a guiding attachment for use in combination with a cutting torch which includes a nozzle which has a truncated conical tip portion and a cylindrical portion, an elongated member mechanically coupled to the nozzle and a gas supplying device for supplying gas to the nozzle which is mechanically coupled to the elongated member and a handle which is mechanically coupled to the elongated member. The guiding attachment includes a cylindrical member which has a bore into which the nozzle is placed and a pair of metal axial rods which are mechanically coupled to the cylindrical body. The guiding attachment also includes a pair of metal wheels, each of which is rotatably coupled to one of the metal axial rods and a coupling device which is a wing nut which is threadedly coupled to the cylindrical member and which couples the cylindrical portion of the nozzle of the cutting torch to the cylindrical member.

Abstract: An apparatus is disclosed for re-claiming used or damaged tube turns and rendering them equivalent to new tube turns with correctly oriented openings. A salvaged tube turn is temporarily fixed to a platform in a position such that the longitudinal axis of one of tube turn ends is approximately perpendicular to the plane of an adjacent circular track. The platform is moved so that the opening of the tube turn end is near the circular track. The circular track is then accurately centered with respect to the opening by use of a spider or the like which is temporarily fixed to the center of the track. Either the spider (and track) or the tube turn is moved so that the spider engages the interior of the opening.

Abstract: A process for the production of a metal or metal alloy powder with flake-shaped particles comprises mechanically crushing a ductile starting material. A foreign substance which forms a separate phase between the crystallites of the starting material is added thereto to facilitate crushing the starting material, while retaining the original workability thereof.

Abstract: An alloy containing Mn in an amount of from 5 to 30 weight percent, at least one member selected from the group consisting of Sn of an amount of not more than 5 weight percent, Al of an amount of not more than 8.5 weight percent, Zn of an amount of not more than 7 weight percent, Fe of an amount of not more than 2.5 weight percent, and Ni of an amount of not more than 2.5 weight percent, and the balance to make up 100 weight percent of Cu plus normally entrained impurities produces a metallic material proof against the attachment thereto of marine organisms when the alloy fulfils a requirement that it should possess an .alpha.(face-centered cubic lattice) single-phase structure.

Abstract: A uniform, large size tungsten powder having properties which make it suitable for producing large size tungsten carbide powder is produced by doping a tungsten oxide starting powder with a lithium compound prior to reduction

Abstract: A process for producing an article of glass manufacture is disclosed in which oxide dispersion strengthened alloys are used to produce complicated shapes. The process includes a critical thermomechanical processing sequence to recrystallize the alloy into a coarse grain structure for high temperature service.

Abstract: After autogenous welding of coils of straight-chromium ferritic stainless steel, the weld area is heated to a temperature within the range of about 1325.degree. to 1515.degree. F. and water quenched from elevated temperatures to room temperature to improve the ductility of the weld area so that during subsequent cold rolling cracking of the weld area will be avoided.

Abstract: Disclosed are oxide dispersion strengthened high temperature alloy compositions which contain as the dispersoid one or more alumina-yttria mixed-oxides selected from the group consisting of Al.sub.2 O.sub.3.2Y.sub.2 O.sub.3, Al.sub.2 O.sub.3.Y.sub.2 O.sub.3, and 5Al.sub.2 O.sub.3.3Y.sub.2 O.sub.3.

Abstract: A homogeneous fine grained palladium alloy consisting essentially of______________________________________ Weight Percent ______________________________________ Pd 70-82 Au 0.1-10 In 5-10 Cu 2-5 Ga 0.5-5 Sn 0.5-5 Co 0.9-2.7 Re 0.01-0.3 ______________________________________and between 0.08 and 0.25% of at least one metal selected from the group consisting of Ru and Ir.

Abstract: This invention relates to a device for removing fused slags on slabs wherein <-shaped cutters with the front center thereof being the apex are disposed on the front and rear positions of a tool rest being vertically movable with a required spacing and being close to the undersurface of the slab, respectively. At least the rear cutter is biased upwardly by a spring mounted in the lower portion of the tool rest. At the same time the shear point in the rear cutter is made to be somewhat higher than that of the front cutter in order to cut out the fused slags deposited on the undersurface of the slab on a transferring roller table with a prescribed length. If it is arranged in such a way that a water-cooling means for water-cooling the deposited portion of the fused dross is disposed before and behind the above device for removing fused slags on slabs, respectively, to cut off the cured dross, the fused slags can more effectively be removed.

Abstract: This disclosure is directed to the cutting of steel pipes and tubes by utilization of a special flexible metal guide in conjunction with a cutting torch. Use of the special flexible metal guide improves the steadiness of the torch, thereby producing a more precise cut.

Abstract: A brazing alloy composition for joining chromium containing base metal alloys containing, by weight, palladium about 39%-60%, nickel about 20%-47.5%, and at least one element selected from the group consisting of silver 0-35%, tin 0-32%, indium 0-32% and gallium 0-11%; and optionally containing one or more elements selected from the group consisting of gold 0-10%, germanium 0-4.4%, silicon 0-2.9% and about 0.025% of a known deoxidizer such as lithium. The alloy exhibits good wetting and flowing characteristics and has excellent strength and corrosion resistance at elevated temperatures. The brazing alloy is particularly useful for joining chromium containing baese metal alloys of the type which are used in the porcelain-fused-to-metal technic in dental prosthetics.

Abstract: A fine-grained shape-memory alloy of the Cu/Zn/Al type, prepared by powder metallurgy, exhibiting the beta-high temperature phase, having dispersed in the matrix dispersoids in the form of Y.sub.2 O.sub.3 and or TiO.sub.2 particles which limit grain growth, and a process for preparing this alloy using mechanical alloying.

Abstract: A process for preparing high purity superfine powders of less than 0.5.mu. diameter of Mo, W, Nb, Zr, Cu, Zn, Co, Ni and In by first producing their fluoride or a double fluoride with ammonium and then decomposing them under heat in a hydrogen-containing stream. Features of the present process are that the double fluoride of the metals with ammonium is faster in crystal growth than their fluoride, recrystallization of these salts can be repeated as desired when a high purity of the metals is required, and particles of a uniform size can be obtained easier.