Abstract:
The present invention relates to a superconductor and a method of manufacturing the same. The superconductor comprises: a substrate having a tape shape that extends in a first direction and having surfaces which are defined as a top surface, a bottom surface, and both side surfaces; a superconductive layer positioned on the top surface of the substrate; a first stabilizing layer disposed on the superconductive layer and containing a first metal; a protective layer disposed on the first stabilizing layer and containing a second metal which is different from the first metal; and an first alloy layer disposed between the stabilizing layer and the protective layer and containing the first and second metals.
Abstract:
An installation for producing batteries is disclosed, having a lead bath station with two heatable and mobile lead bath carriages arranged in an assignable manner at the stationary lead melting pot. Both carriages having a pumping-sucking device that serves for the changing of the lead bath. Molten lead is pumped out of the lead pot into an empty carriage. Both the pumping-sucking devices are arranged pivotably about the axis of rotation (B) and the pivot pin that is fixedly arranged on the carriage is arranged such that it can be separately pivoted about the axis of rotation (A), thus, making it possible for the suction tube and a discharge tube to be moved between the carriage and the led pot.
Abstract:
A hot-dip plating apparatus for plating a thin molten solder film can control a film thickness of a molten solder on a base material evenly and in increments of a few μm and achieve a thin-film solder plating having a film thickness less than a conventional system. As shown in FIG. 1, this apparatus comprises a solder bath 17 of accommodating the molten solder 7; a second conveying section 23 for drawing up a strip member 31 from the solder bath; and a blower section 19 for blowing hot gas on the strip member 31 immediately after being drawn up from the solder bath by a second conveying section 23; the hot gas having a predetermined flow volume and a predetermined temperature equal to or higher than a melting temperature of the molten solder 7. According to this configuration, the excess molten solder 7 can be trimmed from the strip member 31 corresponding to composition of the molten solder 7. Thus, the film thickness of the molten solder 7 coated on the strip member 31 can be controlled evenly and in increments of a few μm.
Abstract:
It is described a method for changing parameters for controlling a transfer of solder paste onto a printed circuit board (150, 250). The described method comprises (a) identifying first subareas (256, 258) of the printed circuit board (150, 250), which exhibit a first repeatability with respect to the amount of solder paste being supposed to be transferred onto the printed circuit board (150, 250), (b) identifying second subareas (252, 254) of the printed circuit board (150, 250), which exhibit a second repeatability with respect to the amount of solder paste being supposed to be transferred onto the printed circuit board (150, 250), wherein the first repeatability is smaller than the second repeatability, (c) transferring solder paste onto the printed circuit board (150, 250) at least at the second subareas (252, 254) of the printed circuit board (150, 250), (d) measuring the amount of solder paste which has been transferred to the second subareas (252, 254), and (e) changing the parameters for controlling a transfer of solder paste onto the printed circuit board (150, 250) in response to the measured amount of solder paste which has been transferred to the second subareas (252, 254). It is further described a corresponding processing device, a system comprising such a processing device and a computer program for controlling and/or for carrying out such a method.
Abstract:
We disclose novel metallic nanoparticles coated with a thin protective carbon shell, and three-dimensional nano-metallic sponges; methods of preparation of the nanoparticles; and uses for these novel materials, including wood preservation, strengthening of polymer and fiber/polymer building materials, and catalysis.
Abstract:
Predetermined diffusing elements such as chromium and/or aluminum are diffused into the surface of a ferrous-based part while preventing, or at least minimizing, bonding of portions of such part to each other or to a fixture with which the part is processed, by constructing the fixture of a barrier material or placing a barrier layer between the member and the part. The barrier has a composition to substantially preclude diffusion therein of the predetermined element and that is capable of withstanding a molten-lead alloy bath. Then the part is contacted by a molten alloy bath consisting essentially of lead and the diffusing elements. Thereafter, the part is separated from the member. The process finds particular use when the part is coiled sheet steel, in which case adjacent flights of coil are spaced by separator means which is made of a barrier material or carries a barrier layer.
Abstract:
Soft copper alloy conductors having a 0.2% proof stress of 12 kg/mm.sup.2 or less which contains 5-200 p.p.m. of calcium, the balance substantially consisting of copper, and hot-dip coated copper alloy conductors made by coating the surface of copper alloy conductors of said composition with tin or lead or their alloy by hot-dipping, and a method of manufacturing said copper alloy conductors.
Abstract translation:软铜合金导体的0.2%弹性应力为12 kg / mm2以下,含有5-200 p.p.m。 的钙,余量基本上由铜组成,热浸镀铜合金导体是用锡或铅或其合金通过热浸涂覆所述组合物的铜合金导体的表面而制成的,以及制造所述铜合金的方法 导体
Abstract:
1. IN A METHOD FOR HOT DIPPING AN ALUMINIUM-KILLED STEEL SHEET IN A HOT DIPPING LINE INVOLVING A REDUCTION ANNEALING PRETREATMENT PROCESS WHICH INCLUDES THE STEPS OF HOT ROLLING SAID STEEL SHEET, DESCALING THE SHEET BY ACID PICKLING, COLD ROLLING THE SHEET, AND THEN DEGREASING THE SHEET IN HOT DIPPING EQUIPMENT, REDUCTION ANNEALING THE SHEET, COOLING THE SHEET TO A SUITABLE DIPPING TEMPERATURE AND IMMERSING THE SHEET IN A HOT DIPPING BATH, THE IMPROVEMENT WHICH COMPRISES WINDING SAID ALUMINIUMKILLED STEEL SHEET AT A TEMPERAUTRE HIGHER THAN 650* C. AFTER THE HOT ROLLING.
Abstract:
The two faces of a sheet or thin strip of stainless steel are covered with a thin coating of lead, and is used for constituting the tubes, collector, water-boxes as well as the pipes of a radiator, and the parts thus made are soldered together with a tin-lead alloy by the same operational cycle as with corresponding parts made of brass or copper.
Abstract:
A process for consistently producing welds between portions of a plurality of Pb-acid storage battery plates and in-situ cast-on battery plate straps, including the essential step of coating a portion of the battery plate with a molten film of an alloy having a melting point at least about 200* F. lower than the melting point of the battery plate and contacting the coated portion with molten battery plate strap material while said film is in a molten condition. The process is most particularly applicable when using Pb-Ca alloys in the plate groups.