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JP4029646B2 |
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JP2007331020A |
To provide a tool die for hot-extrusion in which in order to reduce a tool cost generated in an extruding process, an expensive die is divided into two of an inner ring and an outer ring and the cost reduction of the tool material can be...
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JP4016834B2 |
To provide a thermoelectric material in which the generation of a crack can be prevented in a molding process, an in which an extrusion is conducted by applying a shear deformation using a die having the different extrusion direction and...
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JP2007307614A |
To provide an extrusion die capable of reliably performing the extrusion molding by increasing the shape accuracy and the dimensional accuracy of an extruded shape, and prolonging the lifetime. The extrusion die 1 comprises an insertion ...
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JP4006307B2 |
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JP4004802B2 |
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JP2007253184A |
To provide a die for molding a hollow extruded shape capable of reducing the variation of wall thickness by enhancing the dimensional accuracy of the positional relationship between bearing parts of the die and a mandrel. The die for mol...
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JP3984549B2 |
The invention relates to a method for extrusion, in particular for the production of bent extruded products, in which the extruded product ( 8 ) is formed in a die mounted before a support yoke ( 2 ) of an extrusion machine and then bent...
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JP3976991B2 |
A metal member to be cast-wrapped by a metal cast article, a manufacturing method thereof and a metal cast article including the metal member cast-wrapped are provided. A hollow cylindrical metal member having an outer surface with proje...
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JP2007231408A |
To provide an aluminum alloy hollow extruded shape material having excellent tube expansion formability even if being provided with a welded part, and to provide an aluminum alloy hollow member subjected to tube expansion forming. The al...
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JP3961546B2 |
To provide an extruded hollow shape which is manufactured with small manufacturing man-hour, and consistent in quality. The hollow shape 10 is subjected to the extrusion forming, and parallel portions 21, 22 in which the width in one dir...
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JP3953004B2 |
To provide a heatsink of high precision whose heat dissipation efficiency is high at a low cost. This method for manufacturing an integral heatsink with copper is characterized by installing a process wherein cooper or copper alloy is ma...
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JP3942873B2 |
To provide an extrusion forming apparatus and method, which can manufacture a thermoelectric material with higher thermoelectric performance by applying sufficient shear stress on a thermoelectric material. The extrusion forming apparatu...
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JP3943115B2 |
To provide a shaped raw material for forging, which can improve a yielding ratio in a forging process while suppressing the increase of a manufacturing cost. The shaped raw material 10 for forging is formed by extrusion, and has a cross ...
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JP3935961B2 |
Method and apparatus for the continuous extrusion of rods of plastic raw material. The rods contain at least one inner channel which is at least in part spiral-shaped. The raw material may be a powder-metallurgical or ceramic mass. The m...
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JP2007130661A |
To provide a multi-stage forward extrusion method capable of preventing generation of internal cracks during the extrusion, and reducing the manufacturing cost.The forward extrusion is performed by using a material having the similar que...
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JP2007111718A |
To provide an extrusion die for a multi-hole flat tube capable of prolonging the lifetime of the die by reducing the breakage of end forming projecting parts at both ends of a mandrel which is most likely broken without impairing the ext...
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JP2007050418A |
To reduce a pressure applied to an extrusion die upon high speed extrusion; to suppress the increase of temperature; to prevent the chipping of a center pillar and the generation of the peeling in the surface of a product; and to improve...
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JP3883504B2 |
The purpose of the present invention is to propose a new way of manufacturing curved metal tubes or rods with arbitrary sections and eliminating the conventional bending defects such as thinning and thickening in the wall of tube, distor...
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JP2006299355A |
To micronize an oxide when a metal pulverized material to which an oxide film is stuck is extruded, and to eliminate the blistering of the surface.When a metal pulverized material 25 in which an oxide film is stuck to the surface is heat...
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JP3841436B2 |
In a method for continuous manufacture of profiled sections material (3) is forced through a passageway (2) past the rotating die (5) to form one or several lengthwise profiled sections (11, 12). During its advancement the material (3) i...
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JP2006289470A |
To enhance the manufacturing efficiency of an extrusion material having a slender section without degrading the dimensional accuracy of a product by increasing the number of extrusion holes provided in an extrusion die.A plurality of ext...
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JP3826486B2 |
To prevent generation of burrs at a joining part of both dies while the breakage of the die is prevented, and to solve the problem of the dead metal by separating a holding die from a guide die. A seal metal 6 having a material guide sur...
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JP2006247734A |
To provide a twist-working method for a hollow material capable of increasing the strain of a core portion even when the hollow material is axial-symmetric or non-axial-symmetric.In a step in which a shaft material 1 having a hole 10 in ...
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JP2006247697A |
To provide a divided die for extruding aluminum, which die can reduce the variation of the thickness of the extruded shape aluminum in its longitudinal direction caused by the extrusion, and further to provide the extruded shape aluminum...
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JP3822186B2 |
To enhance durability of a die for refining crystal grain of metal to be worked by extruding and passing the metal into a tunnel-shaped passage having a bend part. A tunnel-shaped extrusion passage 11 is formed on cemented carbide betwee...
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JP2006192451A |
To provide a die for extrusion capable of uniformly introducing refined crystal grains in a metallic material to be worked with high yield.In the die 1 for extrusion having a slot 3 with a bent part 4 in which a stock material 2 is press...
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JP2006142325A |
To provide a bridge die for extruding an aluminum alloy shape capable of extruding even a zinc-containing aluminum alloy without generating any cracks at a root portion of a male mandrel.In the bridge die for extruding an aluminum alloy ...
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JP3769834B2 |
To provide a die for extrusion with which a tubular member having a variable thickness in which thickness part is integrally on an outer surface of a place where requires reinforcement is integrally extruded and an extruding method of a ...
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JP3766567B2 |
To impart twist to an extruded material by arranging two dies in parallel viewing from the front of an extruding port, attaching one die in a forward inclining state to the extruding direction and the other die in a backward inclining st...
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JP3763799B2 |
To provide a port hole die of excellent economy for consistently manufacturing a hollow extrusion die material of excellent dimensional accuracy without any uneven thickness, and reducing wastes of materials. A male die 2 comprises a rin...
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JP3763783B2 |
To provide an extrusion die for a hollow material which easily works a bridge and easily work a recessed part for fitting a female die and a recessed part for making a material inflow on a base part. The female die 10 of the extrusion di...
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JP3763654B2 |
To improve extrusion speed by using an extrusion die which is provided with a core having a hollow part and a thick-walled annular circumferential wall member whose inside is an extrusion material passage, and in which a side edge part i...
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JP3763778B2 |
To provide a die for extruding a porous tube material capable of stably manufacturing the porous tube material excellent in durability and with a high degree of accuracy, and capable of suitably manufacturing the porous tube material who...
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JP3763790B2 |
To provide an extrusion die for a porous tube which is superior in durability, able to stably manufacture the highly precise porous tube and appropriate for manufacturing the porous tube, each hole of which is extremely small. The extrus...
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JP2006068749A |
To provide a seamless metal tube manufacturing method capable of manufacturing a seamless metal tube having less uneven thickness and excellent surface quality with good productivity.In the seamless metal tube manufacturing method for ob...
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JP3755190B2 |
To obtain extruded articles without thickness difference between the start and the ending of extrusion during one push. In a die tool system whose die 1 on which a bearing surface 13 is formed is encircled with a die holder 2, a taper T ...
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JP2006506235A |
A cold forging apparatus for forming complex shapes at a single station includes a plurality of multiple function punch assemblies disposed on intersecting axes. Each of the multiple function punch assemblies includes an inner or a cente...
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JP3742913B2 |
To obtain a long-life die with which an extruded shape having good shape property is obtained even after repeatedly using it in an extrusion process. In this die for extruding aluminum, a white layer whose thickness is 3-10μm consists o...
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JP3742912B2 |
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JP2006026672A |
To provide a porthole die for extruding a hollow material by which a smooth extruded section can be obtained constantly without causing air inclusion due to the deformation of a remaining extruded material irrespective of a cutting condi...
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JP2006026705A |
To provide a device and a method for adding tension, which can reduce manufacturing costs.The invented tension adding device 1 adds tension to a hollow extruded product 17 and is equipped with a chuck 3 for retaining the extruded product...
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JP3741996B2 |
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JP3742019B2 |
To provide an extrusion die capable of easily manufacturing a male die of excellent durability, and reducing the manufacturing cost and the maintenance cost. This extrusion die comprises a male die 5 for forming a hollow part of a hollow...
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JP2006015364A |
To provide a die for extrusion, which can efficiently manufacture a flat multi-hole tube having few defects and faired holes.The die for extrusion is used for forming the flat multi-hole tube having a plurality of holes arranged so as to...
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JP2006015365A |
To provide a die for extrusion, which can efficiently manufacture a flat multi-hole tube having few defects and faired holes.The die for extrusion is used for forming the flat multi-hole tube having a plurality of holes arranged so as to...
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JP3736212B2 |
To fully automate changing work while a die cassette assembly changing device does not interfere with other deices by arranging an elevation tray of upper/lower two stage structure capable of elevation movement/back-forth movement at the...
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JP3735323B2 |
To provide a method capable of manufacturing a Mg or Mg alloy sheet excellent in formability in a simple process. A metal die has an open extrusion cavity which comprises a first bent part bent from a first axis to the direction of a sec...
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JP2005342744A |
To provide a wear resistant sintered tool which has high hardness, high strength, and high toughness, and is excellent in fusion resistance and wear resistance.The wear resistant sintered tool is made of a sintered substance composed of ...
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JP3698927B2 |
To provide a hollow shape material extrusion die capable of forming a thin hollow shape material a welded member made of a material hard to extrude like an aluminum alloy, etc., by a reduced number of correcting bearing parts and its thi...
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