Abstract: A high-strength zinc base alloy which contains 5.2 to 8.6 wt % of Al, 3.0 to 6.5 wt % of Cu, 0.01 to 0.20 wt % of Mg, and if necessary, 0.30 wt % or less of one or two of Co and Ni, and/or 0.04 wt % or less of Ti, the balance being substantially composed of Zn, and which is suitable for a metal mold and die casting.

Abstract: The present invention discloses a rigid magnetic recording disk and a method of making the same. The substrate is formed by metallurgically bonding at least a first and second layer of clad materials. The hardness and mechanical strength of the first layer is substantially greater than the second layer. The first layer has a thickness which is from about 0.2% to about 20% the thickness of the second layer. The unbonded surface of the first layer is substantially flat and asperity free. The second layer is less dense than the first layer. A magnetic layer is deposited on the unbonded surface of the first layer.

Abstract: Problems are caused by stress corrosion cracking and exfoliation cracking in the heat-affected zones adjacent welds in structure of welded components formed of Al alloys, particularly of the 7000 series but also of the 5000 series. The invention seeks to overcome these by the use of Al-Mg welding wire containing 0.01-0.5% Ga and/or In and/or Sn, the composition being chosen such that the weld bead has a potential at least as electronegative as the components and preferably in the range -1200 to -1300 mV with reference to a standard calomel electrode. To prevent diffusion of Ga/In/Sn, the components may be pre-coated e.g. by using a double-pass welding technique.

Abstract: A new high quality, low cost, thin-film magnetic recording member is provided, which has a coercive field strength greater than 650 Oe, a saturation magnetization greater than 10,000 Gauss, and a squareness ratio of 0.9 or larger. The member includes a substrate on which is directly sputter deposited a chromium layer, without the use of an intervening nickel-containing layer between the substrate and the chromium. A nickel-cobalt recording layer is then sputter deposited directly onto the chromium layer. In the preferred mode, the start of that nickel-cobalt deposition begins less than 100 seconds after the chromium deposition is terminated and is followed by the sputtering of a protective layer. Before the chromium deposition, the substrate is preheatead to drive off adsorbed gases, and to establish the proper conditions for the chromium deposition. The substrate is also heated during the time between when the chromium deposition ends and the nickel-cobalt deposition begins.

Abstract: The present invention provides a rapidly dissolving additive for molten metal, wherein it contains 2 to 50% by weight of a component A, which consists of an alkali metal aluminium fluoride and/or an alkali metal aluminium fluoride-containing salt mixture, and 50 to 98% by weight of a component B, which consists of at least one alloying metal, the alloying metal being different from the base metal to be allied, the components A and B being present intimately mixed.The present invention also provides a process for the production of this additive.

Abstract: There is disclosed a process for preparing alloyed-zinc-plated steel sheet having excellent deep drawability, which comprises adjusting the temperature of substrate steel sheet of titanium-killed steel essentially consisting of C.ltoreq.0.01%, Si<0.15%, Mn: 0.15-0.85%, Ti: 0.05-0.30%, P.ltoreq.0.02%, S.ltoreq.0.02%, Al.ltoreq.0.05% and balance of Fe, to a temperature within a temperature range T(.degree.C.) defined as 180.ltoreq.T.ltoreq.-240.times.W+292, wherein W(%) is the Ti content of the substrate steel sheet, subjecting said steel sheet to Zn-plating by vacuum vapor deposition, and thereafter maintaining the plated steel sheet for alloying the plating zinc layer and the substate steel at 220.degree..about.320.degree. C. for 1-50 hours in accordance with Ti content of the substrate steel. This process provided alloyed zinc-plated steel sheets having excellent drawability and powdering resistance.

Abstract: A process for treating hazardous particulate generated during a manufacturing process is provided. The process includes the steps of: passing particulate material through at least one duct toward a waste collection device; feeding an additive into the duct to be mixed with the particulate material, upstream from the waste collection device; and passing the particulate material mixed with the additive into the waste collection device. A scrap remelting apparatus is also provided.

Abstract: A method and apparatus for cooling gases and/or vapors from non-ferrous metal treatment plants, wherein gases and/or vapors which develop in the treatment region are passed parallel to a heat transfer surface consisting of one or more sets of vertical tubes disposed in intimate mutual contact to form a shaft structure, the tubes being fed with water under pressure to produce steam, and the shaft structure being suspended above the treatment region.

Abstract: Lead-free and antimony-free solder compositions are described which comprise, as essential ingredients, about 0.05% to about 3% by weight of silver; about 0.5% to about 6% by weight of copper; about 0.1% to about 3% by weight of bismuth; and about 88% to about 99.35% by weight of tin. In preferred embodiments, the solders are also essentially free of cadmium and may also be essentially free of both cadmium and zinc.

Abstract: A composite sliding structure has a surface layer, a bond layer bonded to the surface layer, an intermediate layer bonded to the bond layer and a backing layer bonded to the intermediate layer. The surface layer is an alloy consisting essentially of 0.1-6.0% Cu and the balance Pb, an alloy consisting essentially of 0.1-6.0% Cu, 0.5-16.0% In and the balance Pb, an alloy consisting essentially of 0.5-16% In and the balance Pb, or any one of these alloys also containing 4% or less Sn. The bond layer is Cu, an alloy consisting essentially of 0.5-20.0% Zn and the balance Cu, an alloy consisting essentially of 0.1-4.0% Sn and the balance Cu, Ni, an alloy consisting essentially of 0.5-20.0% Zn and the balance Ni, or an alloy consisting essentially of 0.1-4% Sn and the balance Ni. The intermediate layer is Al, an alloy consisting essentially of 1.0-13.0% Si, 1.5-6.0% Zn and the balance Al, an alloy consisting essentially of 1.5-13.0% Si and the balance Al, an alloy consisting essentially of 0.1-4.

Abstract: Zirconium-based corrosion resistant alloys for use primarily as a cladding material for fuel rods in a boiling water nuclear reactor which consist essentially of 0.5 to 2.5 weight percent bismuth, or alternatively, 0.5 to 2.5 weight percent of a mixture of tin and bismuth, 0.5-1.0 weight percent of a solute composed of a member selected from the group consisting of niobium, molybdenum, tellurium, and mixture thereof, alternatively, the solute will be composed of tellurium and will be in the range of 0.3-1.0 weight percent, and the balance being zirconium.

Abstract: Disclosed is a steel sheet having an organic composite plating layer excellent in press workability, spot weldability, electrodeposition coatability and corrosion resistance which comprises a zinc plated, aluminum plated or zinc base composite alloy plated steel sheet, a first layer of an insoluble chromate film of 5% or less in the content of water-soluble matter formed on the surface of the steel sheet at a coverage of 10-150 mg/m.sup.2 in terms of chromium content and a second layer of a coating composition having the following composition coated at a thickness of 0.3-5 .mu.

Abstract: Disclosed is a wear-resistant intermetallic compound alloy having superior machineability which consists essentially of: 45-60% of either Ni or Co or both with cobalt content of at least 5%, at least one of 0.1-2% of Hf and 0.05-2% of Re, 0-2% of at least one element selected from the group consisting of Si, P, Cu, Zn, Ga, Ge, Cd, In, Sn, Sb, Pb and Bi, 0-2% of C, and 0-5% of at least one element selected from the group consisting of Zr, Fe, V, Nb, Ta, Cr, Mo, W and Mn, the balance being Ti and incidental impurities, the percent being atomic percent.

Abstract: A hot-dip galvanized coating for improved resistance welding of galvanized steel parts or sheets includes particles of a metal phosphide, and preferably ferrophosphorus particles, having a particle size of from about 0.1 to about 30 microns such particles being included in the galvanized coating while the zinc is still molten. The coating can also include up to about 40% by weight of the metal phosphide of an additional metal such as nickel, tin, aluminum or lead, which can be incorporated in the coating as discrete particles or deposited onto the surface of the metal phosphide particles.The advantages of the present invention include a significant reduction in welding current and an increase in electrode life, as well as simplified application of the coating by incorporating the metal phosphide particles directly into existing coating lines.

Abstract: Disclosed is a fuse material consisting of aluminum or a rollable aluminum alloy having a copper plating deposited thereon and optionally being provided with a tin plating deposited on the copper plating. A fuse made of the fuse material shows a small temperature rise and has an extended useful service life as compared to conventional fuses.

Abstract: A discharge control device is presented which includes a variable opening formed between two cylinders with parallel axes. The cylinders are mounted between two symmetrical support blocks having bores and are spaced at a distance equal to the sum of their radii. At least one of the cylinders has an external cut-out which, upon rotation of the two cylinders, defines the variable opening. The cylinders are in the form of discs with an axial thickness wherein the cut-out extends over the whole thickness. The discharge control device controls the flow of molten materials.

Abstract: Soldering material essentially consists of 20-50% of Pb, 0.5-less than 1% of Sb, 0.1-5% of In, and balance of Sn. Such material is suitable to solder electronic parts exposed to temperature variation and mechanical vibration.

Abstract: An iron/copper/chromium alloy material for a high-strength lead frame or pin grid array, which comprises 20 to 90% by weight of Cu and 2.5 to 12% by weight of Cr, with the balance being mainly iron, and which has an average grain size number of at least 10 in each of the iron/chromium phase and the copper phase, is prepared by continuous casting, cold-working, and aging.

Abstract: There is provided a high-strength, easily-castable zinc alloy consisting substantially of, by weight, from 1 to 30 percent aluminum, from 1 to 20 percent copper, from 0.01 to 1 percent titanium, from 0.01 to 1 percent zirconium, and the balance zinc, and also is provided a high-strength, easily-castable zinc alloy further including from 0.01 to 0.1 percent magnesium. These alloys are useful in the manufacture of molds for injection molding of plastics or also useful as die casting products.

Abstract: Zirconium-based corrosion resistant alloys are provided primarily for use as a cladding material for fuel rods in a boiling water nuclear reactor, the alloy in one embodiment consisting essentially of about 0.5-2.0 percent by weight of tin, about 0.5-1.0 percent by weight of a solute, the solute being composed of a member selected from the group consisting of molybdenum, tellurium and mixtures thereof, or alternatively, the solute will contain niobium in combination with molybdenum and/or tellurium and the remainder being zirconium, and in another embodiment the alloy consists essentially of about 0.5-2.0 percent by weight of tin 0.3-1.4 percent by weight of a solute, the solute being composed of tellurium, and the remainder being zirconium.