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JP2001096307A |
To obtain a method for manufacturing a shape memory alloy tube capable of reducing the roughness of an inner wall side and scratches, and also having a good yield and obtaining a long-length tube. In the manufacturing method of the Ti-Ni...
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JP2001071024A |
To provide an inner face grooved tube production method having a high working precision and high productivity. A mandrel 5 consisting of a connection bar 4, in which a grooved plug 2 is joined to its tip and a floating plug 3 is connecte...
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JP2001047123A |
To form a highly raised part on an inner surface of a tube without degrading productivity. A form rolling part comprises a roll-pressing ball 1 to revolve around an axis of a tube outside the stock tube 3, and a grooved plug 2 to be rota...
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JP3136861B2 |
PURPOSE: To inexpensively obtain a hollow steering shaft with excellent quality. CONSTITUTION: A blank tube 16 having a circular shape of its cross section passes through a rough forming die 25 and feeds into a finish forming die 26. The...
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JP2001030008A |
To provide a method for manufacturing a wire of the strength of the core wire of which is higher and which has a thick layer of copper or copper alloy on the outside at a low cost and manufacturing a long size wire continuously in the wi...
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JP2001018007A |
To reduce die change frequency and to manufacture a wire at low cost by increasing the hole diameter of a die of one stage unwinding side from the final larger than a hole diameter of the final die and reduce it less than the upper limit...
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JP2001001036A |
To greatly prolong the life of a die and to obtain a product which is free of speckles and stains on the surface and has beautiful metallic gloss by applying working oil uniformly dispersed with a fluorine resin on the working surface of...
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JP3115737B2 |
PURPOSE: To provide a diamond die for a wire which can obtain the wire suitable in the supply quantity lubricant and small in friction between the wire and the die, free from the surface flaws of the wire caused by the die damage when th...
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JP3111895B2 |
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JP2000514723A |
An improved coldforming tool made of a zone in a tungsten carbide-cobalt cemented carbide is disclosed. The tool, preferably a wire drawing nib, contains WC with a mean grain size of 1.5-2 mu m and 5-7 weight % Co and with a carbon conte...
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JP3104641B2 |
To completely prevent internal dirt caused by carbonization of lubricating oil which is mostly generated especially in a necked part after heat-treating products regardless of the sizes of a mandrel and tube stock. This device is a devic...
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JP3101184B2 |
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JP2000288658A |
To provide a wear resistance tool of tungsten carbide super alloy having excellent self-lubricity. A tungsten carbide super alloy wear resistance tool is constituted of a sintered body of a green compact having a blend composition consis...
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JP2000288621A |
To provide an instrument by which the correlation of withdrawal force to the reduction of area with a die at the wire drawing time, the kind of lubricant, the hardness, outside diameter, temperature or the like of the wire is easily and ...
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JP3096121B2 |
A wire drawing die comprises a polycrystalline CVD diamond layer (10) having a hole (20) formed therethrough and mounted in a support (12).
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JP2000271630A |
To provide a metal stock drawing method which is free from any bend of a neck in portion, and easy in drawing when the sectional dimension of the metal stock is reduced by achieving the drawing area reducing work of the metal stock throu...
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JP2000197911A |
To provide a pultrusion method of a tube and pultrusion device for the tube for surely preventing a tube to be formed from breaking before the completion of forming. In the pultrusion method of the tube by which the tube M to be formed i...
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JP2000197912A |
To provide a pultrusion method by which the breakage of a tube to be formed in the starting stage of pultrusion is prevented. In the pultrusion method by which the tube M to be formed is threaded through the clearance G between the inner...
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JP2000158038A |
To expand the working ratio of tube drawing in the case of reducing a diameter and to reduce the number of tube drawings from a base pipe to a product size thereby by arranging a plurality of drawing dies with a certain interval on the d...
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JP3038441B2 |
PURPOSE:To manufacture an alloy wire rod having a high Barkhausen effect, at the time of annealing the wire rod of an Fe-Ni-Cu alloy having a specified compsn. by hot working and thereafter subjecting this wire rod to cold wire drawing u...
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JP2000107806A |
To enable hot working, the efficiency of which is improved and which has high roughness on a worked surface even in the case of hot-rolling a bard- to-work material such as stainless steel.This tool is a hot working tool in which the con...
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JP3030712B2 |
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JP2000094029A |
To provide a wire drawing die and a wire drawing method capable of obtaining an uniform wire by stabilized wire drawing for a wire requiring uniformity as represented by a spring free length.Wire drawing is done by any one of following d...
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JP3021371B2 |
To obtain the manufacturing method of the perforated pipe manufactured with drawing and the perforated pipe capable of continuously and inexpensively manufacturing and also capable of obtaining a long size perforated pipe. This perforate...
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JP2000051926A |
To reduce a hot rolling time and to extend a tool life. A ceramic plug for hot working, of which the contact face with a stock material is made of a ceramic, has a glass coated layer formed on the contact face. The glass having the softe...
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JP2000042623A |
To provide a lubricating equipment for the inner surface of a tube stock capable of supplying a lubricant to a sliding and contacting part between a plug and the inner surface of the tube stock with a simple device so as to save manpower...
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JP2000042839A |
To impart excellent abrasion resistance to a machining material sliding contact die surface composed of the die hole inner peripheral surface by sticking/ accumulating an electrode consuming melting substance or the reactant of a dischar...
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JP2000042622A |
To surely obtain sound products by preventing the occurrence of chevron cracks when a metallic material is drawn. (1) Drawing is executed using a metallic material to be drawn wherein the ratio of a deformation stress between the central...
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JP2000015324A |
To reduce refuse attached to a wire, which has been generated at the time of the wire drawing, and to make a surface defect on the wire hard to generate. At least on the one side on the wire inlet or the wire outlet of the die box 1 in w...
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JP2000005810A |
To reduce an abrasion at a time of draw processing and obtain a good cooling effect by dropping a lubricant according to a wire diameter from the plural dies inlet upper side, applying it to a metallic wire, and removing a metallic powde...
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JP2985702B2 |
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JPH11319934A |
To perform grooving with satisfactory productivity by giving vibrations in the axial direction so that frictional resistance between a working tool and tube stock is more effectively reduced when forming sharper and deep grooves on the i...
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JPH11314112A |
To provide a wire drawing die whose residual stress is lower and whose practcal life is longer. A forming body member 72 is suitable for housing the opening 68 extended around of the center axial 75 line over an entire area in its longit...
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JPH11300411A |
PURPOSE: To provide the inner surface with a specific roughness by using a plug that has a ring-shaped projection in a part of the finish part in the rear of the plug, performing cold drawing with a state maintained in which a stepped pa...
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JPH11290936A |
To provide a manufacture of wire which prevents overheat of a cassette type roller die and a wire, which has superior productivity without impairing working environment, and which excels in quality and machining precision, in the case wh...
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JPH11285892A |
To reduce the number of times of annealing, to prevent breakage even under high speed continuous drawing, to improve productivity and to attain low manufacturing cost, in the drawing of such a fine flux cored wire for welding stainless s...
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JPH11267742A |
To embody a wire drawing production apparatus which dispenses with a smaller space and has decreased product defects by supporting both end portions of a workpiece with a pair of heads and holding the workpiece with a pair of rollers. Hi...
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JP2953515B2 |
To make various kinds of heat-transfer pipes having different central angles of ellipses efficiently manufacturable by constituting the elliptic molding section of a draw die which plastically works the straight pipe sections of the heat...
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JP2950289B2 |
To provide a method and device for manufacturing a metallic tube with grooves on the inside surface whose outside diameter is small, thickness is thin, grooves on the inside surface are deep or the angle of torsion to the tube axis of wh...
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JPH11244933A |
To provide a wire drawing roller device for a wire rod which easily makes a carry bar space between respective rollers coincide with each other. When adjusting nuts 40, 41 are rotated in one direction and the distance between respective ...
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JP2944583B2 |
To provide a device for working the internal and external surfaces with which the defective rotation of a mandrel is prevented, inferior working is prevented and working accuracy is improved. In a working device for forming a spiral groo...
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JPH11221612A |
To provide a method for working profile slits on a tubing in the axial direction to a tubing suppressing deformation as little as possible. A plug 16 on the outer peripheral surface of which projections 8 are formed in the axial directio...
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JP2935830B2 |
To form a prescribed profile on the inside and outside corner edge parts on an axial slit of tube by drawing the tube. In this device, at least either a plug 16A with an axially formed projecting part 30 on the outer peripheral surface o...
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JPH11197736A |
To provide a steel wire excellent in quality and capable of solving a problem of stuffing of a heading tool caused during the heading by drawing the wire with the prescribed reduction of area without using any lubricant by a final die to...
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JP2920316B2 |
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JP2920478B2 |
PURPOSE: To obtain a rubber-reinforcing steel cord having high fatigue resistance by heat-treating and plating a specific carbon steel wire, drawing the wire to obtain a steel wire having a tensile strength higher than a specific level a...
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JP2920474B2 |
PURPOSE: To obtain an ultrahigh strength steel wire using a specific carbon steel wire material, good in toughness and fatigue resistance, having an ultrahigh tenacity, and suitable as a cord raw material for reinforcing rubber. CONSTITU...
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JP2906025B2 |
PURPOSE: To impart excellent strength and twisting characteristics to the product by subjecting a high carbon steel wire rod having specified carbon content to wet wire drawing by using dies in which the shape and arrangement are optimum...
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JPH11147073A |
To enhance the bonding strength of a plate-shaped extruded material made of an Al alloy and the functional org. film coating the same. A plate-shaped extruded material 11 made of an Al alloy having a non-oxidized surface 21 obtained by a...
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JPH11138209A |
To prevent the crack from crossing orthogonally to the shifting direction of a work at an approaching part and a bearing part only though the crack generated at the corner part of an opening part extends at the corner parts of the openin...
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