摘要:
A process is recited for plating elongated current collectors with indium. The current collectors have particular utility in alkaline electrochemical cells, particularly zinc/manganese dioxide alkaline cells containing "zero-added" mercury. The process of the invention involves electroplating conductive wire with indium and then drawing the plated wire to a lesser diameter. The drawn plated wire may then be cut to the desired lengths, typically in the shape of a nail, for use as current collectors within the alkaline cell.
摘要:
A process for making fine and ultra-fine metallic fibers is disclosed comprising arranging a multiplicity of metallic wires to form an assembly of the metallic wires. The assembly of the metallic wires is wrapped with a wrapping material to form a wrapped assembly. A plurality of the wrapped assemblies are inserted into a tube for providing a cladding. The cladding is drawn for reducing the outer diameter thereof and for reducing the cross-section of each of the multiplicity of metallic wires within the cladding to transform the multiplicity of metallic wires into a multiplicity of fine or ultra-fine metallic fibers. The cladding is removed for providing the multiplicity of fine or ultra-fine metallic fibers. In one example, the metallic wires are coated with a coating material formed from the same material as the wrapping material and the cladding material.
摘要:
A cup shaped yoke made of sheet material has an opening portion provided in a side wall on an axial end side, a shoulder portion provided in the sidewall on another axial end side, a magnet installation portion for installing a magnet, which is provided in the side wall between the opening and shoulder portions and whose wall thickness is substantially equal to thickness of the sheet material, and a bottom portion, which is provided in a bottom wall, having a boss shaped bearing accommodating portion in a center thereof. Each wall thickness of the opening, shoulder and bottom portions including the boss shaped bearing accommodating portion is equal to or smaller than a half of wall thickness of the magnet installation portion.
摘要:
In a method of manufacturing a partly flat yoke having curved circumferential walls to which magnets are to be attached and having parallel flat circumferential walls which constitute main magnetic paths and whose each radial thickness is larger than that of the curved circumferential walls, by drawing a sheet of metal plate, the metal plate is held down between a die and projections of a wrinkle preventing plate provided at given angular positions around an outer circumference of a cavity of the die so as to correspond to the curved circumferential walls. Then, a punch presses down the metal plate into the cavity so that material of the metal plate extends axially into the cavity, while the material of the metal plate flows circumferentially from each side of the curved circumferential walls to sides of the parallel flat circumferential walls.
摘要:
This invention relates to a method for molding a bicycle tube and the method comprises the following steps: first, providing a tube and then controlling thickness of the tube by a drawing and extruding process for forming a molding portion. Second, plasticize other portions of the tube into particular diameters and shapes by plasticizing processes. Third, hydroform the molding portion of the tube by a mold and a hydroforming device for forming particular three-dimensional shapes. By applying to the above-mentioned method, the tube could be molded into a three-dimensional, unique and delicate shape.
摘要:
In a method of manufacturing a partly flat yoke having curved circumferential walls to which magnets are to be attached and having parallel flat circumferential walls which constitute main magnetic paths and whose each radial thickness is larger than that of the curved circumferential walls, by drawing a sheet of metal plate, the metal plate is held down between a die and projections of a wrinkle preventing plate provided at given angular positions around an outer circumference of a cavity of the die so as to correspond to the curved circumferential walls. Then, a punch presses down the metal plate into the cavity so that material of the metal plate extends axially into the cavity, while the material of the metal plate flows circumferentially from each side of the curved circumferential walls to sides of the parallel flat circumferential walls.
摘要:
A process is disclosed for making fine metallic fibers comprising forming a continuous tube about a plurality of coated metallic wires for providing a first cladding. The first cladding is drawn for reducing the outer diameter and for diffusion welding the coating within the cladding. The tube is mechanically removed to provide a first remainder. The first remainder is drawn for reducing the diameter thereof to transform the plurality of metallic wires into a plurality of fine metallic fibers. In one example, the diffusion welded coating is removed for providing the plurality of fine metallic fibers. In another example, a plurality of the first remainders are assembled and a continuous tube is formed about a the first remainders for providing a second cladding. The second cladding is drawn for reducing the outer diameter. The tube is mechanically removed to provide a second remainder. The second remainder is drawn for reducing the diameter thereof to transform the plurality of fine metallic fibers into a plurality of ultra fine metallic fibers. The diffusion welded coating is removed for providing the plurality of ultra fine metallic fibers.
摘要:
A method of joining first and second sheets of deformable material by providing a first sheet having oppositely facing first and second surfaces, providing a second sheet having oppositely facing third and fourth surfaces, placing the second surface on the first sheet facially against the third surface on the second sheet, directing a first discrete element against the first sheet in a first direction to cause a part of the first sheet contacted by the first discrete element to deform and project beyond the fourth surface on the second sheet and directing a second discrete element against at least one of the first and second sheets to at least one of a) cause the part of the first sheet to deform transversely to the first direction to define a first shoulder facing oppositely to the first direction that abuts to the fourth surface and b) cause the second sheet to deform transversely to the first direction to define a second shoulder facing in the first direction that abuts to the part of the first sheet.
摘要:
The present invention in some aspects is directed to small arms ammunition and programmed upset characteristics thereof imparted to them using high energy beams. More particularly, the invention relates to ammunition and methods of making ammunition having predetermined patterns of engraving and/or cutting or hardening and/or annealing imparted in the ammunition's forward portion using a programming laser or electron beam system adapted for treating projectiles to effect predetermined and consistent upset configurations.
摘要:
The present invention in some aspects is directed to small arms ammunition and programmed upset characteristics thereof imparted to them using high energy beams. More particularly, the invention relates to ammunition and methods of making ammunition having predetermined patterns of engraving and/or cutting or hardening and/or annealing imparted in the ammunition's forward portion using a programming laser or electron beam system adapted for treating projectiles to effect predetermined and consistent upset configurations.