Abstract: Foil for covering an impression cylinder of a rotary offset printing press for first-form and perfector printing is formed of a chemically and wear-resistant rigid support layer having good ink transfer behavior and having a structured surface with statistically uniformly distributed convex and concave structural elements thereon, and a microroughness-reducing chromium layer disposed on the rigid support layer and forming a sheet-guiding outer cylindrical surface of the impression cylinder, respective peaks being formed on the convex structural elements for supporting a sheet thereon, each of the convex structural elements having an oval shape with a radius of curvature increasing from the respective peak thereof to a transition into respective concave structural elements adjacent thereto.

Abstract: Various metal coatings have been used for many years to inhibit oxidation of metals exposed to the natural elements of the atmosphere over a period of time. Terne alloy coatings which normally contain about 20% tin and about 80% lead are some of the most popular metal coating treatments to resist corrosion. The special formulation of the present invention reformulates the terne coating to constitute a tin and lead based coating where tin constitutes at least 90% of the terne and lead amounts to less than 0.1% and preferably less than 0.05% of the terne. The low lead terne coating may also include antimony and bismuth to provide strength and hardness to the low lead terne formulation having corrosion resistive qualities similar to that of standard terne coating formulations.

Abstract: A ceramic-reinforced aluminum matrix composite is formed by contacting a molten aluminum-magnesium alloy with a permeable mass of ceramic material in the presence of a gas comprising from about 10 to 100% nitrogen, by volume, balance non-oxidizing gas, e.g., hydrogen or argon. Under these conditions, the molten alloy spontaneously infiltrates the ceramic mass under normal atmospheric pressures. A solid body of the alloy can be placed adjacent a permeable bedding of ceramic material, and brought to the molten state, preferably to at least about 700.degree. C., in order to form the aluminum matrix composite by infiltration. In addition to magnesium, auxiliary alloying elements may be employed with aluminum. The resulting composite products may contain a discontinuous aluminum nitride phase in the aluminum matrix and/or an aluminum nitride external surface layer.

Abstract: A weather-resistant strip roofing material having improved corrosion-resistant properties includes a strip of stainless steel which is pre-treated by an aggressive pickling process and/or a chemical activating process prior to applying a hot-dip tin coating, The pre-treatment of the stainless steel strip produces superior alloying between the stainless steel and the tin coating which reduces flaking of the tin coating.

Abstract: In a leadframe for supporting semiconductor devices and including a plurality of outer lead sections, a recess or recesses are provided on each of the outer lead sections at a central portion or both sides of each outer lead section in a region including a cutting line. The recess or recesses reduce the cross-sectional area of the lead section, thus enabling a new cut surface of the lead section to be well covered by solder and enabling ready cutting of the lead section.

Abstract: A brass layer is formed on a steel wire, and an Ni layer is formed on the brass layer. Then, the steel wire is drawn through a die, and the brass layer and Ni layer are mixed into an alloy coating layer. In the coating layer, the closer to its surface the higher the Ni content. According to the method, a rubber-reinforcing steel wire can be produced which shows improved wet adhesive property to rubber, without degrading drawability.

Abstract: The object of the present invention is to provide an aluminum plate for fabrication which has an excellent formability, easy degrease after fabrication, coating properties, and less tendency of flawing, in which the aluminum plate for fabrication which is plated, and coated with a lubricant containing (A) a fatty acid ester of polyol, (B) an alkaline or alkaline metal salt of sulfonate, and (C) a controlling agent, and having saponification value of 20 or more.

Abstract: A laminated steel sheet for a welded can which includes: a steel sheet; a plating layer formed on the steel sheet, the plating layer having a surface roughness represented by a PPI of 5 to 150, the plating layer having a tinning layer and a chemical treatment layer, the tinning layer being formed on the steel sheet and the chemical treatment layer being formed on the tinning layer, the tinning layer having a coating weight of 0.9 to 2.8 g/m.sup.2, the chemical treatment layer containing 5 to 50 mg/m.sup.2 of metallic chromium and hydrated chromium oxide containing 5 to 25 mg/m.sup.2 of chromium; and a resin film thermo-compressed on the plating layer in a band form, the resin film being a biaxially oriented film of a polyethylene terephthalate copolymer, the polyethylene terephthalate copolymer having an acid component of which 0.5 to 10 mol % is isophthalic acid.

Abstract: A silicide of a refractory metal such as Cr, Mo, Ta, Nb, W, Zr, Ti and V, preferably CrSi.sub.2 and MoSi.sub.2 are materials that are resistant to attack by molten metals, such as zinc, and which materials can provide coatings for various articles. The method for producing the coated materials is also disclosed.

Abstract: A assembly of mated molded parts and a method for making same are disclosed in which the assembly has first and second parts with precisely mating surfaces. The first part is formed by molding, casting, or the like such that the mating surface of the first part is formed with at least one protrusion. The second part is formed in place against the first part such precisely mating surfaces are formed with the second part enveloping the protrusion. The two parts thus formed are forced apart from each other. The protrusion may be formed with a head which interlocks with the second part. When the parts are separated, the head breaks from the protrusion. In a particular embodiment, a bearing cap is disclosed having a central opening for the passage of a shaft.

Abstract: A steel sheet plated with zinc or a zinc alloy carries a chromate film formed on each side thereof and having a coating weight of 1 to 200 mg/m.sup.2 in terms of metallic chromium, and a black film formed at least on the chromate film on one side thereof. The black film contains 100 parts by weight of a thermosetting resin which is soluble in an organic solvent, 1 to 200 parts by weight of a black dye which is also soluble in an organic solvent, and 1 to 100 parts by weight of organic resin particles. It may further contain 1 to 100 parts by weight of fine inorganic particles, or a solid lubricant, or both. The black film has a thickness of 0.3 to 5.0 microns which is sufficiently small to permit the welding of the sheet, and yet has an excellently black surface. The organic resin particles, etc., which are used as a matting agent, give the film a surface of low gloss which resists visible staining by fingerprints.

Abstract: A high-strength cold-rolled steel strip or a molten zinc-plated high-strength cold-rolled steel strip which have a low yield strength, containing, by weight, of 0.0005-0.01% C, not more than 0.8% Si, more than 0.5% but not more than 3.0% Mn, 0.01-0.12%: P. 0.0010-0.015% S, 0.01-0.1% Al, 0.0005-0.0060% N, not less than 0.0001% but less than 0.005-0.1% the content of Nb being made to satisfy Nb .gtoreq.93/12 (C-0.0015), or instead of 0.005-0.1% Nb, 0.0005-0.1% Ti and 0.003-0.1% Nb, the content of Nb and the content of Ti being made satisfy, Ti.gtoreq.3.42N, and the balance Fe and incidental impurities is provided. Another steel strip or molten zinc-plated strip is provided that contains 0.2-3.0% Cr but does not require B, and includes both Ti and Nb. The method of producing such is also provided.

Abstract: A tape useful for an automatic bonding process when manufacturing a high-frequency semiconductor device, the tape comprising an insulating flexible film, and circuit patterns consisting of copper or copper-alloy formed on the insulating film, each of the circuit patterns having inner and an outer lead portions. A tin or tin-lead plated film is formed on the pattern, and an intermediate plated film is formed on at least the outer lead portion as an underlayer. The intermediate plated film consists of a metal or metal alloy selected from nickel, cobalt, gold, silver, platinum, palladium, indium or rhodium.

Abstract: A multi-layer bearing having an Al--Sn bearing alloy layer which has high fatigue strength and good conformability with a mating member further comprising a backing steel plate and an intermediate bonding layer of another aluminum alloy. The Al--Sn alloy consists essentially of, by weight, 7 to 20% Sn and balance of Al and impurities, and has a hardness of Hv 50 to 80. The aluminum alloy of the intermediate bonding layer consists essentially of, by weight, at least one of up to 1.7% Mn, up to 1.2% Cu and up to 1.8% Mg, and balance of Al and impurities, and a hardness rate of the aluminum alloy of the intermediate bonding layer to the Al--Sn bearing alloy exceeds Hv 70% and is not greater than 90%.

Abstract: A method of making a solid foam material including the steps of heating in a chamber a starting material that is normally solid at room temperature to a temperature that is above its melting point, injecting a blowing liquid into the melted material to produce a mixture; and rapidly decompressing the mixture to produce the solid foam material.

Abstract: An elongated retainer for use in a linear motion guide unit is provided. The retainer has a generally U-shaped cross sectional shape and formed with a recessed portion at each end thereof. The recessed portion is engageable with a corresponding stopper provided at each end of the guide unit so that the effective stroke of the retainer is increased by a sum of the depths of these two recessed portions.

Abstract: A joint for joining a silicon disc (21) to a molybdenum disc (22) comprises a layer of titanium silicide (20) and a layer of aluminium-silicon solder (23). The titanium silicide is formed by depositing a layer of titanium on the silicon disc and heating the silicon disc and the titanium to around 550.degree. C. to encourage the formation of titanium silicide. A solder disc is then compressed between the silicon and molybdenum discs at about 690.degree. C. to fuse the solder to the titanium silicide layer and the molybdenum disc. The layer of titanium silicide protects the silicon disc from dissolution during soldering, so that diffused-in features in the silicon are not damaged.

Abstract: There is claimed an aluminum alloy sheet product having a composition consisting essentially of: about 1.35-1.6 wt. % iron; about 0.3-0.6 wt. % manganese; about 0.1-0.4 (and preferably about 0.22-0.4) wt. % copper; about 0.05-0.1 wt. % titanium; about 0.01-0.02 wt. % boron; up to about: 0.2 wt. % silicon, 0.02 wt. % chromium, 0.005 wt. % magnesium and 0.05 wt. % zinc; and a balance of aluminum, incidental elements and impurities. This composition is cast to an initial thickness greater than about 3 mm (0.12 inch). The end product exhibits improved strength and surface properties through a manufacturing process which includes: heat treating at one or more temperatures above about 450.degree. C. (842.degree. F.), and preferably below about 500.degree. C. (932.degree. F.); before rolling to final gauge. When cold rolled to various thicknesses, this sheet product exhibits ultimate tensile strength values ranging from 11-15 kg/mm.sup.2 for thin and intermediate gauge products, to about 27-30 kg/mm.sup.2 (38.4-42.

Abstract: A removable stiffener, which is made of titanium so that it will not be wetted by solder, consists of a thick, straight center member with wedge-shaped feet evenly spaced along its length. A latching pin is included on one end. The stiffener also includes flanges made of thinner stock, running the length of the stiffener on both sides. These flanges strengthen the center member and hold it perpendicular to the card on which the stiffener is installed. The stiffener requires a one-half inch wide channel on the card and a special pattern of slots. To install the stiffener, the feet are inserted part-way into the slots with the latching pin of the stiffener oriented near the latching slot of the card. The card is then bent gently away from the stiffener while the stiffener is being pushed forward so that the latching pin and the latching slot align and engage. When the card springs back the stiffener is latched in place.

Abstract: The clad sheet comprises a first layer or cladding of an iron-base or nickel-base alloy including at least 11% chromium and at least 17% nickel and resisting corrosion by very corrosive mediums such as acids, and a second layer or base of austenitic stainless steel including at least 11% chromium and at the most 17% nickel resisting atmospheric corrosion. The clad sheets may be cold re-rolled down to a thickness of 2 mm.