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Patent Searching and Data


Matches 551 - 600 out of 2,061

Document Document Title
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...  
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...  
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...  
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...  
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...  
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...  
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...  
JP3111895B2  
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...  
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...  
JP3101184B2  
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...  
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 ...  
JP3096121B2
A wire drawing die comprises a polycrystalline CVD diamond layer (10) having a hole (20) formed therethrough and mounted in a support (12).  
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...  
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...  
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...  
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...  
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...  
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...  
JP3030712B2  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
JP2985702B2  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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...  
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 ...  
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...  
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...  
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...  
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...  
JP2920316B2  
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...  
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...  
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...  
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...  
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...  
JPH11129019A
To make it possible to replace a die easily and adjust the angle of the die easily for straightening. The die equipment is provided with a column-like die case 61 and a die holder 62 to incorporate the horizontal die case 61 detachably, ...  

Matches 551 - 600 out of 2,061