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JP2001001040A |
To reduce back pressure applied to a mandrel at the time of hot extrusion, to stabilize the quality and to reduce the manufacturing cost of the mandrel by making the step diameter of the mandrel equal to the diameter of the parallel part...
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JP2000351041A |
To endure a tool for higher deformation working force as well as to have a simple and hard to fail structure.A work is subjected to deformation working by a deformation working tool, consisting of an upper ram supporting a punch 2, an ej...
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JP3119022B2 |
PURPOSE: To provide a method and device for extruding a twisted body by which the pitch of twist of formed product to be extruded from a die is shortened and the under fill in the cross-sectional shape is prevented. CONSTITUTION: In an e...
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JP3119023B2 |
PURPOSE: To provide a method and device for extruding a twisted body by which the pitch of twist of formed product to be extruded is shortened and the load for compressing the material to be formed is reduced. CONSTITUTION: The material ...
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JP3118206B2 |
To secure stable production of extruded products with improved surface properties by making the surface roughness of the part near the bearing surface of rear relief rising surface of the outlet of die for extrusion be ≤specidied value...
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JP3114844B2 |
To provide an extruding die for a honeycomb structure such that the working manhours can be reduced for the material supply holes. The extruding die 1 is composed of a forming part 2, which is formed with mutually connected slit grooves ...
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JP3113100B2 |
PURPOSE: To provide a die for extruding multi-hole pipe which can prevent lowering of the service life of a machining tool accompanied with ultra multi- hole machining to the multi-hole pipe, and the multi-hole pipe which can satisfy the...
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JP3111896B2 |
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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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JP2000288623A |
To provide an extruding device for copper products capable of preventing the deteriorating of the quality of the extruded products without increasing the cost of the device or extruded products. This device is provided with a wheel 1 on ...
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JP3100248B2 |
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JP3097537B2 |
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JP3095917B2 |
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JP3095916B2 |
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JP2000263126A |
To easily provide an extruded shape of changed sectional wall thickness by providing a restrictive jig having the analogous inner shape smaller in diameter than the outside diame ter of a circumscribing circle of a shape to be extruded f...
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JP3091156B2 |
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JP2000254753A |
To permit taper working for a curved part of a backer by eliminating a cutting defect due to a difference in the cutting speed of a surface and a rear face in taper working of the curved part by gas fusion cutting. The opening part of a ...
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JP2000254751A |
To provide a forging method with a punch stroke length, in which working is done with a die of good shaft reduction capability, capable of preventing a forming defect of jamming, etc. suitable for an arbitrary working condition and in a ...
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JP2000246328A |
To restrain generation of a burr even an extrusion molding processing under a condition of high extrusion ratio by making a container sealing part to be a concentric circular convex shape against an axial center, and making a flow guide ...
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JP2000246329A |
To make a molding of an extrusion material possible even under a condition of high extrusion ratio and, materialize a fast extrusion by making a molding hole of the extrusion material one and, arranging it at a central part of a die, set...
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JP2000246330A |
To obtain a die structure of long service life at a fast extrusion by finishing a male die mandrel part surface in a specific roughness first for chemically finishing TiN and TiC layers with a plasma chemical evaporation method and, furt...
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JP2000237816A |
To obtain an extruded shape having good surface state without surface defects such as a die mark and chipping by controlling the surface roughness in the edge parts on the stem side of a bearing. This extruding die 10 has a slit 11 havin...
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JP2000218316A |
To improve metallic foil productivity by effectively reducing extrusion ratio. In an extrusion molding device 10 for extrusion molding a metallic foil 44 via slits 18 formed on a die 20 by pressing a billet 24 inputted in a hollow part 1...
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JP2000197914A |
To provide a die for extruding a hollow stock which is unnecessary for changing a whole male die even when a forming projecting part is damaged, economically favorable, versatile, and capable of reducing the assembly man- hour. A male di...
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JP2000167619A |
To obtain an extruded stock small in generation of the twist during the extrusion by allowing a stock inlet side relief part of an extruding die to have elliptical shape or polygonal shape having smooth angle.A stock inlet side relief pa...
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JP2000136596A |
To provide a seamless long hollow member having different cross-sectional shapes without having welded parts. In a hollow member 1 having a variable hollow part 3 whose cross-sectional shape gets larger continuously as a whole as the cro...
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JP2000135510A |
To control thickness nonuniformity of a billet by preventing inclination of a plug during expanding and misalignment between the plug and a mandrel without linking the plug and the mandrel. A mandrel 30 is provided at its end face with a...
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JP2000135511A |
To manufacture hollow clad material wherein a dissimilar material is clad on the surface of a hollow base material. An extruding die 10 consists of a combination of a male die 11, a plate 12, and a female die 13, and the male die 11 has ...
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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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JP3032762B1 |
[wrap up] [Task] Providing a mold that is easy to manufacture and can withstand the extrusion and pressurization of the metal member to be processed in the mold used for refining the crystal grains of the metal member to be processed by ...
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JP2000102816A |
To provide a die for hot extrusion of an aluminum alloy which can extrude an aluminum alloy tube and the like in high quality, high dimensional accuracy, is superior in anti-abrasion property, has a long service life and is inexpensive.I...
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JP3031791B2 |
PURPOSE: To integrally and efficiently produce a safe window molding having good gloss over the entire length thereof by extrusion molding by changing the ridge element provided to the window molding to a natural shape. CONSTITUTION: A m...
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JP2000096769A |
To provide a double end support beam which causes no problem even when deflection occurs.A double end support beam 1 of which the beam height changes so that a section modulus lessens toward the central part from the opposite end parts i...
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JP2000084613A |
To provide a production method for an aluminum alloy shape (heat radiation plate) having a super high tooth form ratio of ≥20 times and the die adaptive thereto. The die consists of a feed die 1 and a forming die 2, the feed die 1 is a...
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JP3025601B2 |
PURPOSE: To provide a die for forging remarkably excellent in usable life. CONSTITUTION: An inside cylindrical member 1 of a die for forging is made of a hard material constituted of a metal bonding phase of an alloy essentially consisti...
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JP2000061528A |
To prolong the life of a die, to reduce the stoppage of operation caused by unforeseen trouble and to improve productivity by applying carburizing/hardening treatment to the surface of an extruding die. For example, SKD 61 containing abo...
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JP3014506B2 |
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JP2000042627A |
To remarkably improve the degree of freedom of a deforming shape by closing a hollow inner part of a hollow stock during hot extruding from an external part, increasing and decreasing an inner pressure within the hollow part and deformin...
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JP2000024713A |
To provide a separating device for die backers with which a die and backers are more surely automatically separated and residue which remains in the die after the die is separated from the backers is safely cut without the aid of hands. ...
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JP2000015326A |
To provide the die for Cu hot extrusion, which is excellent in resistance to heat check. When manufacturing the die 10 for Cu hot extrusion, which is used for the hot extrusion of Cu or Cu alloy extruding base stock, after obtaining an a...
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JP2000005812A |
To remove the material skin layer in dead metal during extrusion, and obtain a good extruded material without entrainment defects. A heated metallic material 2 is contained in a cylindrical container 3, and one end of the container 3 is ...
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JP2000005811A |
To make a die durable for a long usage without mending by forming an abrasion resistant membrane of a DLC film to a bearing face formed on the mold after it is polished and finished like a mirror. After forming a bearing face on an alumi...
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JPH11347677A |
To improve the durable service life of a forging die by setting the coefficient of thermal expansion of an outer sleeve to be smaller than that of an intermediate sleeve, and radially splitting the intermediate sleeve in the circumferent...
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JPH11347625A |
To improve the heat transfer between a tube and a heat transfer medium by forming plural independent projections on an inner surface of the tube to form a turbulent flow in the heat transfer medium flowing in the tube and increasing the ...
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JPH11342416A |
To manufacture along clad material through one extrusion using an extruding tool having two types of material passage holes for a base material and a dissimilar material without deteriorating product quality. This extruding tool comprise...
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JP2990672B2 |
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JPH11333513A |
To manufacture a long size clad material by one extrusion by eliminating the waste of a dissimilar material in the manufacture of the clad material using an extruding tool having two kinds of material passage holes for a base metal and f...
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JP2986309B2 |
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JPH11319975A |
To manufacture sheets having a flat surface which are not parallel to each other by changing a gap value by the function of each sectional position from one step to the next step until the section of the prescribed dimension is given to ...
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JPH11319976A |
To manufacture sheet having a flat surface which are not parallel to each other by controlling the thickness according to the prescribed regulation to continuously change the sheet thickness by the function of the distance from an initia...
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