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JP3448459B2 |
To obtain a wire rod for steel wire, excellent in scale adhesion in the course of conveyance between stages before wire drawing and excellent in scale peeling property in the stage just before wire drawing. The wire rod has a composition...
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JP3448905B2 |
PURPOSE: To obtain an internally grooved tube of a stable quality by providing an indicating means, by which the prescribed angle of the fixed part for attaching a roll is indicated, thereby facilitating the fine adjustment of a pressing...
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JP2003260511A |
To provide a method for manufacturing wire rods capable of preventing fluctuations of free coil diameters.A device for manufacturing wire rods 1 comprises a drawing die 3, a first optical sensor 5, a shaving die 7, a second optical senso...
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JP3445719B2 |
To improve the wire drawability, scale adhesion, and peeling characteristic of a wire rod for steel wire. This wire rod has a composition consisting of, by weight, 0.70-1.1% C, 0.10-0.40% Si, 0.20-0.90% Mn, 0.003-0.02% P, 0.002-0.01% S, ...
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JP2003526177A |
(57) [Summary] The highly flexible cable (100) includes two, preferably three or more strands or nickel-titanium alloy wires (102,104,106). The wires are paired to form a wire rope (108). The nickel-titanium alloy wire rope (108) is draw...
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JP3442460B2 |
PURPOSE: To obtain a cold drawn hard steel wire excellent in twisting properties and fatigue properties by subjecting stock with a tempered lower bainitic structure of a carbon steel or a high-medium low allay steel having a specified co...
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JP3438533B2 |
To provide a manufacturing method for a tube having a grooved inside surface by which working speed is improved by reducing drawing force loaded on a metallic tube in the final stage of working the tube having the grooved inside surface....
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JP3438472B2 |
To eliminate generation of a grooveless metallic tube when grooving is started, to reduce the drawing force, and to prevent the metallic tube from being broken. A plug unit 13 is inserted to the prescribed position into a metallic tube 1...
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JP2003226924A |
To provide a soft copper member of a specific cross-sectional area or less in which increase in hardness caused by a liquid lubricant can be suppressed and which has low hardness and is soft.The soft copper material is produced by carryi...
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JP2003220407A |
To provide a split die and its die-nib which gives less risk of snapping, continuously forms structurally tough and strong, long and ultra-fine square wire, improves product yield and production efficiency, manufactures highly precise an...
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JP3434081B2 |
PURPOSE: To provide a high carbon steel wire rod to be descaled, excellent in wire drawability. CONSTITUTION: In the steel wire rod prepared by hot rolling and having ≥0.6wt.% C content, the true stress-true strain curve in the tensile...
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JP3434080B2 |
PURPOSE: To provide a high carbon steel wire rod to be desceled, excellent in wire drawability. CONSTITUTION: In the steel wire rod prepared by hot rolling and having ≥0.6wt.% C content, the true stress-true strain curve in the tensile...
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JP3434079B2 |
PURPOSE: To provide a high carbon steel wire rod to be descaled, excellent in wire drawability. CONSTITUTION: In the steel wire rod prepared by hot rolling and having ≥0.6wt.% C content, the shape of cementite existing in the cross sec...
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JP3430851B2 |
To roughly make a groove working quantity uniform in the longitudinal direction of a tube to be worked without increasing drawing force by inserting a working plug, which forms a groove on its outer face, into a hollow part of a tube to ...
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JP3427740B2 |
To obtain a wire rod having a well-defined relationship between the index of discontinuity and the state of existence of a segregation zone by specifying C, Mn, Si, Cr, V, Co, and impurity concentration in a carbon steel wire rod and obs...
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JP3428502B2 |
To obtain a wire rod excellent in wire drawability and to provide, with high productivity in superior yield, an extra fine steel wire using the wire rod as a material and a stranded steel wire formed by stranding the extra fine steel wir...
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JP2003197668A |
To provide a semiconductor package bonding wire and its manufacturing method wherein the quality of signal transmission can be maintained, and which is more inexpensive than a gold one.A bonding wire for semiconductor device includes a c...
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JP2003183900A |
To enhance the productivity of a dissolution-type extrafine metal wire.In a method for producing the extrafine metal wire wherein the surface layer of a metal element wire 2 is dissolved and removed by the immersion in a dissolution liqu...
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JP2003181523A |
To improve the service life of a die by preventing a dropout of a diamond grain of the diamond die used as the die in a final wire drawing process.Centering devices 20A-20C are respectively arranged for centering a final drawing die 10A ...
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JP2003181532A |
To provide a method for manufacturing a metal tube which can reduce not only an outer diameter but also a thickness of a wall without a problem in the step to be conducted later after the long metal tube is manufactured.The method for co...
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JP3420644B2 |
PURPOSE: To greatly improve the life of dies and the ductility of a finished wire and to improve the quality of a metallic wire and the productivity in a drawing stage. CONSTITUTION: This drawing method is a method for drawing the metall...
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JP2003171777A |
To reduce the fraction defective of a product, and to suppress the reduction of the service life of an oxalate film treatment solution in a method of performing cold reduction to a stainless steel tube.A polyoxyethylene-polyoxypropylene ...
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JP2003170215A |
To provide a die for wiredrawing by which an improvement of the die's life and cost performance of the die can go hand in hand, and to provide a method for manufacturing a metal wire capable of inexpensively and positively realizing manu...
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JP2003170216A |
To provide a die for wiredrawing capable of preventing wire surface roughness while making an improvement of the die's life and cost performance of the die compatible, and to provide a method for manufacturing a metal wire capable of ine...
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JP3413827B2 |
To obtain a wire capable of uniting high strength and high stiffness and provide a method for producing the wire. In a method for producing a carbon steel wire having high toughness by subjecting austenitized wire rods to pearlite modifi...
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JP2003517935A |
A process is disclosed for making fine metallic alloy fibers from a metallic alloy wire having plural alloy components and encompassed by a cladding material. Preferably, the cladding material is tightened about the metallic alloy wire i...
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JP2003154407A |
To provide a port hole extruded material which makes pipe expansion forming equal to that of a mandrel extruded material of an aluminum hollow extruded material for hydroforming and a method of manufacturing the same.The aluminum hollow ...
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JP2003136126A |
To provide a method and apparatus for wiredrawing a metallic thin line capable of reducing a winding tension while optimizing drawing conditions in the final die and further capable of lowering a surface flaw generated on the surface of ...
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JP3404941B2 |
PURPOSE: To decrease the frequency of breaking of wire during drawing a wire and to manufacture the wire excellent in a surface state by drawing the wire in the same direction from a base stock to the final wire diameter at the time of m...
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JP2003126908A |
To provide a method for manufacturing a continuous draw bench and such guide members as track rails and bocks using the draw bench, wherein a drawing process is feasible with a high ratio of area reduction and the life of a processing di...
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JP3401848B2 |
PURPOSE: To enable a stable grooving by providing plural second rolls which, receiving a rotational force by coming into contact with plural first rolls, are rotated while revolving on the second circular locus with a radius smaller than...
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JP3398234B2 |
PURPOSE: To prevent the rapid progression of wear of dies by maintaining specific number of the dies on a final side at the same speed in both of the speed of the wire emitted from the dies and the circumferential speed of driving cones....
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JP2003113422A |
To provide a thermally tempered steel wire having equivalent or better heading characteristics to or than those obtained by spheroidizing annealing, by quick quenching and tempering treatment with high frequency induction heating without...
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JP2003112218A |
To provide a method for manufacturing a thick-wall thin-diameter tube the inner peripheral surface of which has high smoothness by removing tool marks or the like on the thick-wall thin-diameter tube which are generated at initial intern...
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JP3394791B2 |
PURPOSE: To simplify the structure of the cooing tube, and also, to allow it to have high cooling performance by inserting a spiral structure body formed by repeating a twisting process and a cooling process into the cooling tube, allowi...
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JP2003512524A |
The invention concerns a method for the manufacturing of a wire-shaped product with high wear resistance. The characteristic feature is that a melt is prepared of a martensitic stainless chromium steel which contains in weight-% 0.6-3.0 ...
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JP3391167B2 |
To ensure good heat transfer properties and wetting properties of an absorption solution as well as high heat transfer efficiency by forming an acute angle between the side of a corrugated fin and an internal wall surface of a pipe to be...
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JP2003088912A |
To provide a method and apparatus for stably manufacturing an extra fine wire having a diameter of ≤20 μm in which foreign matters are mixed without breaking it.During performing ordinary drawing with a hole die, the foreign matter mi...
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JP3389802B2 |
To provide a wire capable of keeping the crystalline structure even under the hard working, high in strength and excellent in toughness. The high strength carbon steel wire contains 0.6-1.0wt.% C, is ≥1700N/mm2 in tensile strength afte...
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JP3388517B2 |
PURPOSE: To provide a cold finished steel bar made of heat-resisting steel wire which the wear of a die is reduced, the execution of heat treatment in the middle is unnecessitated, the shortening of process is possible and which is also ...
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JP2003080308A |
To provide a seamless tube which has a smooth outer surface and an inner surface on which a plurality of kinds of grooves are formed, and to provide a method and a device for manufacturing the seamless tube having the grooved inner surfa...
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JP3388012B2 |
PURPOSE: To manufacture steel cord without delamination. CONSTITUTION: Steel wire for steel cord is manufactured by adding C: 0.7-1.10%, Si: 0.4% or less, Mn: 0.5% or less, P: 0.020% or less, and S: 0.020% or less, adding as necessary on...
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JP2003062610A |
To manufacture a heat exchanger tube with inclined fins inside efficiently, which has the inclined fins formed on the inside surface and is applied to the heat exchanger for a refrigerator, an air-conditioner or the like.A grooved plug 3...
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JP3382185B2 |
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JP2003053417A |
To solve a drawback that vibration occurring in the longitudinal direction of Langevin vibrators 5, 6 affects the insertion of a workpiece adversely because the Langevin type vibrators 5, 6 are mounted othogonally to the inserting direct...
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JP2003053416A |
To provide a method and a device for stably manufacturing an extra fine wire of ≤20 μm in the diameter by drawing out without cutting the wire even in the case foreign matter is mixed. These method and device are a method and a device...
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JP2003053420A |
To provide a method for manufacturing a steel wire by which high yield and excellent surface properties are realized. The surface flaws of a wire rod are detected by a flaw detector provided before the intermediate working device of the ...
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JP2003053418A |
To provide a drawing method and a drawing device for dissolving problems generated in all diameters of finished wires during the wire drawing and ensuring excellent quality while improving productivity by speeding-up the wire drawing usi...
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JP2003048013A |
To provide a manufacturing method of a gold bonding wire by which the frequency of occurence of breaking in a thin gold wire during drawing is reduced and drawing speed is improved. In the manufacturing method of the gold bonding wire by...
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JP2003033810A |
To provide a wiredrawing method of metal fine wire for a semiconductor device which improves longevity of a die while keeping surface smoothness of metal fine wire. A desired diameter of metal fine wire 1' is produced by arranging plural...
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