Abstract: Components made from steel can be nitrocarburized in cyanate- and cyanide-containing salt baths within relatively short times if the process is carried out at 600.degree. to 700.degree. C. in a first stage and at 560.degree. to 590.degree. C. in a second stage. The components exhibit the same or better characteristics as compared to considerably longer processing at 560.degree. to 590.degree. C.

Abstract: A method of producing Fe-Ni system high permeability alloy comprising the steps of obtaining cast steel sheet 0.3 to 7 mm thick by direct casting of a steel melt containing 35 to 85% by weight of nickel with the balance of iron and unavoidable impurities, forcibly cooling the sheet from solidification to 1200.degree. C. at a cooling rate of at least 75.degree. C./s, and cold-rolling the sheet at a reduction ratio of at least 20%.

Abstract: A non-heat refining steel having a high fatigue strength in addition to an excellent machinability, which consists essentially of 0.30-0.50 wt % of C, 0.35-0.70 wt % of Si, 0.80-1.40 wt % of Mn, 0.30-0.80 wt % of Cr, 0.05-0.35 wt % of V, not more than 0.15 wt % of S and not more than 0.35 wt % of Pb so that (S+Pb) is not less than 0.06 wt % and (S+Pb/4) is not more than 0.15 wt %, 0.0003 to 0.0050 wt % of Ca, not more than 0.010 wt % of Al, 0.0015-0.0030 wt % of O and the balance of being Fe and inevitable impurities, and has a micro-structure composed of 10 to 40% by area of ferrite and balanced pearlite after hot working and air cooling.

Abstract: Steel containing, on a weight percent basis, 0.01 to 0.15% of carbon, 0.05 to 0.50% of silicon, 0.20 to 1.0% of manganese, 0.01 to 0.1% of aluminum, 0.3 to 2.0% of copper, 0.1 to 2.0% of nickel, 0.015 to 0.1% of niobium and 0.0005 to 0.0050% of calcium, the balance of its composition being iron and unavoidable impurities, is heated to a temperature of 1100.degree. C. to 1250.degree. C., and hot rolled. The hot-rolled steel is coiled at a temperature of 350.degree. C. to 500.degree. C. to prepare a hot-rolled steel sheet having a tensile strength not exceeding 65 kgf/mm.sup.2. The sheet is cold worked until a working strain of at least 15% is set up. The cold-worked product is heated at a temperature of 400.degree. C. to 550.degree. C. for 0.5 to three hours to yield a part having a tensile strength of at least 80 kgf/mm.sup.2 for an automobile, particularly its automatic transmission system.

Abstract: A steel sheet for porcelain enameling having improved press formability and enameling properties comprises particular amounts of C, Mn, B, Cu, Al, O, N, and P or further Ti and Nb and the balance being Fe and inevitable impurities and is produced by hot rolling a slab of steel having a chemical composition as mentioned above as a starting material, cold rolling the resulting hot rolled sheet at a reduction of not less than 70%, and then subjecting the resulting cold rolled sheet to a continuous annealing at a heating temperature of not lower than 800.degree. C. but not higher than A.sub.c3 transformation point.

Abstract: In composition of Fe-Ni alloy preferably used for lead frames in production of IC, specified amount of Be is added to the basic composition for increase in mechanical strength while maintaining the low thermal expansion characteristic of the conventional Fe-Ni alloys.

Abstract: An austempered ductile iron differential gear and method of manufacture. The gear is cast to near net shape in a vertical injection, flaskless moulding machine using delayed inmould inoculation to ensure greater homogeneity of the alloy melt. The gear casting is allowed to cool, then austenized at a temperature of 1628.degree. F. for a period of approximately 11/2 hours, and subsequently austempered in a quench bed at a temperature of approximately 526.degree. F. for a period of approximately four hours.

Abstract: High strength alloy steel cartridge cases characterized by very high isotropic yield strength characteristics are produced from high temperature austenitic conditioned materials by subjecting the materials to a substantial one-pass draw operation and thereafter freezing the materials at approximately -100.degree. F. prior to age hardening.

Abstract: A high tensile cold rolled steel sheet improved in stretch flanging property, containing 0.03% to 0.15% by weight of C, 0.05% or less by weight of Si, 0.5% to 1.2% by weight of Mn, 0.005% to 0.045% by weight of Nb, and 0.10% or less by weight of Al, the remainder being iron and unavoidable impurities, and the steel sheet having a uniform and fine recrystallized ferrite structure having a mean grain diameter of 20 .mu.m or less and an area fraction of 95% or more having improving ductility and a process for its preparation.

Abstract: An improved cutting tool is provided, especially useful for hand shears. The cutting edge of the tool is made of a wear-resistant material of either: (a) 85% to 96% tungsten carbide and 15% to 4% cobalt, (b) 60% to 89% tungsten carbide, 4% to 28% tantalum carbide, 4% to 25% titanium carbide and 3% to 30% cobalt, or (c) 34% to 51% cobalt, 25% to 32% chromium, 14% to 21% tungsten, 2% to 4% carbon and one or more of the metals nickel, silicon, columbium, manganese and iron which, together, comprise no more than 16% of the material. For material "b", preferably the composition contains about 5% to 13% cobalt, 65% to 89% tungsten carbide, titanium carbide and tantalum carbide which, together, are present in an amount no greater than 30% of the composition of the material.

Abstract: A method for refining the microstructure and enhancing the processability of titanium aluminum alloys containing about 45 to 55 atomic percent aluminum which comprises the steps of:(a) rapidly solidifying a titanium aluminum alloy containing about 45 to 55 atomic percent aluminum to provide a rapidly solidified material having at least one dimension not greater than about 100 micrometers;(b) diffusing hydrogen into the resulting rapidly solidified material at a temperature in the approximate range of 400.degree. to 780.degree. C., and;(c) diffusing hydrogen out of the hydrogenated solid material.

Abstract: A process for producing coarse, longitudinally oriented column crystals with improved temperature change resistance and ductility in the transverse direction in a workpiece of any cross-section from an oxide-dispersion-strengthened nickel-base superalloy, which exists in fine-grained form, by annealing in the temperature range between 1000.degree. and 1200.degree. C., cooling to room temperature and isothermally annealing for coarse grain in the range between 1230.degree. C. and 1280.degree. C.

Abstract: The Droplet Emulsion Technique is used to produce droplets of bulk metal or metal alloys containing inoculant particles. Heterogeneous nucleation responses are then separated and identified with variances in inoculant chemistry, size, morphology, and surface conditions in the different droplets. Differential Thermal Analysis (DTA) is used to detect and to correlate thermal signals generated from as little as 50 droplets 75-100 .mu.m in size, allowing the separation of signals generated by a minor fraction of the total droplet population. Quenching treatments are used on the samples during thermal analysis to retain the original solidification microstructures produced from effective inoculation. Differences between droplet solidification microstructures preserved from the quenching treatments allow for visual identification of effective and ineffective inoculant particles.

Abstract: A method for producing a selectively surface hardened cast iron part includes uniformly heating the surface of the part by immersion into a molten metallic bath until a desired thickness of surface austenite is produced, and thereafter quenching the heated cast iron part in a liquid quenching bath which is maintained at a temperature of between about 450.degree. to about 800.degree. F. for about 10 minutes to about 4 hours. The resultant selectively surface hardened cast iron part is surface hardened with the bulk of the body of the part remaining untempered. An apparatus for performing this process includes a molten metal bath chamber for containing the molten metal and a molten salt bath quenching chamber for quenching the cast iron parts with a conveyor means extending between the molten metal bath and the molten salt bath chambers. A second conveyor means removes the parts from the molten salt bath chamber.

Abstract: A method of producing non-oriented magnetic steel plate having high magnetic flux density in a low magnetic field and uniform magnetic properties through the thickness direction, comprising selection of a heating temperature and finish rolling temperature to coarsen the size of the austenite grains and prevent refinement of the grain size in the rolling process, and annealing the steel after it has been rolled.

Abstract: The present invention relates to a process for preparing a unidirectional silicon steel sheet having a high magnetic flux density which comprises heating a silicon steel slab comprising by weight 0.025 to 0.075% of carbon, 2.5 to 4.5% of silicon, 0.015% or less of sulfur, 0.010 to 0.050% of acid-soluble aluminum, 0.0010 to 0.012% of nitrogen, 0.050 to 0.45% of manganese and 0.01 to 0.10% of tin and optionally 0.0005 to 0.0080% of boron with the balance being iron and unavoidable impurities, at 1200.degree. C.

Abstract: The present invention concerns a process for the production of semiprocessed non oriented grain electrical steel. More precisely it provides a solution to the technical problem of obtaining non oriented grain sheet or strip characterized by high magnetic permeability and low magnetic losses. According to the invention, starting from a steel with a low S, N and C content, through appropriate selection of hot-rolling variables and high-temperature annealing prior to cold rolling, a big improvement is achieved in the magnetic characteristics of the product, thanks to a better compromise between grain size and crystal orientation.

Abstract: The claimed material for refining steel of multi-purpose application contains the following components in the following proportion, % by mass:______________________________________ aluminium 30-40 silicon 35-25 calcium 5-15 magnesium 7-5 carbon 20-10 iron the balance.

Abstract: The present invention provides a wound core having a low core loss and not susceptible to a disappearance of the core loss lowering effect due to a magnetic domain refining even when stress-relief annealing is conducted after fabrication of a steel strip into a wound core, through a process which comprises, fabricating a very thin silicon steel strip comprising by 6.5% weight or less of silicon with the balance consisting essentially of iron and having a sheet thickness of 100 .mu.m or less and a magnetic flux density (B.sub.8 value) of 1.80T or more into a wound core, subjecting the wound core to stress-relief annealing, unwinding the very thin silicon steel strip from the core, introducing into the very thin silicon steel strip a linear or dotted local strain in a direction at an angle of 45.degree. to 90.degree. to the rolling direction of the thin strip, and rewinding the thin strip onto the core.