Class 72/342.8 - Preheating

Subclass of Class 72 - Metal deforming
Definition: Subject matter comprising heating or cooling of a tool before
No. of patents: 34
Last issue date: 11/23/2010

Number	Title	Issue Date
7836744	Die for forging at high temperatures Die for high temperature forging of metal components, in particular intermetal components, including and upper an a lower die, characterized in that provided to each die part, at room temperature and with some clearance, is a surrounding reinforcing ring against whi...	11/23/2010
7325433	Press oven including an intermediate body, and method for use A press oven, especially for the pressing of dental material, includes a press stamp via which pressure can be exerted on a blank in a matrix mass of a muffle. An intermediate body is positionable between the press stamp and the blank and the heat conducting capabil...	02/05/2008
7290427	Clamp ring with pre-heater A clamp ring for a forge die, the clamp ring comprising a substantially solid ring portion having a channel about the outer diameter and at least one flame aperture formed between the inside and the outside diameter and in fluid communication with the channel and a ...	11/06/2007
7278287	Apparatus for shaping metal sheets Apparatus for shaping metal sheets including a shaping tool having an forming space for receiving a metal sheet. At least one heating element is disposed in a recess of the shaping tool for heating at least a portion of the metal sheet, whereby an insulation layer i...	10/09/2007
7257981	Closed forging method, forging production system using the method, forging die used in the method and system, and preform or yoke produced by the method and system A closed forging method for producing a forged product includes preparing as a forging material a cylindrical cast ingot that has a volume the same as the volume of a forged product and assumes a shape having an upper surface, a lower surface and a side surface and ...	08/21/2007
7254978	Process for the heating of forging machine tools and forging tools, and a removable furnace element for the heating of such tools This present invention concerns a process for the heating of a forging machine tool, including an insert holder and an insert with one free face bearing a forging impression, in preparation for a forging operation in the said forging machine. The process is characte...	08/14/2007
7204119	Hollow metallic ring seal for press A press and tooling apparatus for forming a preheated blank includes a heated upper tool and an opposing heated lower tool mounted within the press for relative closing movement to press the preheated blank there between. A binder ring assembly surrounds the lower t...	04/17/2007
7191632	Device and method for manufacturing resin coated metal seamless container shell In forming a can body by processing a cup-shaped in-process material with a punch and a die, the die is not heated when the forming process is not carried out, and the die is heated when the forming process is carried out. Therefore, the temperature of the die is ad...	03/20/2007
7178376	Forging press of the hot-die type and thermal insulation means for the press The invention relates to a forging press of the hot-die type with an operating temperature above a temperature T, comprising two dies between two die support elements, a thermal insulation means being placed between each die and its support element. The press...	02/20/2007
7171882	Knife-like cutting die A knife-like die for cutting a thermoformed plastic article from a sheet of thermoformable plastic. The die includes a die build up plate that is mounted to a first platen and a striker plate that is mounted to a second platen. The die further includes a die board h...	02/06/2007
7159437	Heated die for hot forming A hot forming tool is heated with multiple electrical resistance cartridge heaters. The heaters are located in the body of the tool so as to maintain the entire forming surface within a predetermined temperature range. Numerical thermal and optimization analyses dir...	01/09/2007
7066000	Forming tool apparatus for hot stretch-forming processes A tooling assembly for hot stretch-forming of a sheet metal workpiece. A forming tool is attached to a plate and includes a shell having a forming surface, and support walls that extend away from the shell, that terminate in a rearward surface of the forming tool, a...	06/27/2006
7004004	Method of making a hardened motor-vehicle part of complex shape A hardened steel part of complex shape is made from a workpiece by first heating the workpiece to an annealing temperature. Then, while the workpiece is still at the annealing temperature, the workpiece is rapidly deformed by a machine into an intermediate shape. Th...	02/28/2006
6988389	Continuous extrusion apparatus Die heater body assembly for continuous extrusion apparatus includes a die block of non-magnetic material for the extrusion of copper tube and a bucket portion forming a sliding fit in a die heater body. The die heater body includes a coil of copper tubing in a cera...	01/24/2006
6973815	Monolithic part and process for making the same The present invention provides a process for producing a monolithic product wherein a piece of stock is formed, then machined. The invention encompasses a monolithic product made by the process. ...	12/13/2005
6964186	Adhering anchor and device for deforming areas of a vehicle body The invention relates to a device for deformation, in particular for restoring deformed bodywork regions, having a pulling device to which an adhesive bolt can be fastened, the adhesive bolt being fastenable by adhesion to the bodywork region to be deformed. ...	11/15/2005
6655184	Warm/hot corrugation machine and method for corrugating low-ductility foils A machine and method for corrugating a metal foil strip utilizes an enclosure defining a chamber and a controllable heat source for heating the chamber. The chamber may optionally include at least one gas that is also heated by the heat source. At least o...	12/02/2003
6550302	Sheet metal stamping die design for warm forming In metal stamping dies, by taking advantage of improved material flow by selectively warming the die, flat sections of the die can contribute to the flow of material throughout the workpiece. Local surface heating can be accomplished by placing a heating ...	04/22/2003
5758420	Process of manufacturing an aneurysm clip A process for manufacturing an aneurysm clip (10) having a coil spring (22), a first arm (26) ending in a first clamping jaw, and a second arm (34) ending in a second clamping jaw (40). The method includes: (a) providing a cylindrical starting rod (1) of ...	06/02/1998
5377515	Process for cold pilger rolling of thin-walled pipes A process for cold pilger rolling of thin-walled pipes having small outer diameters in which calibrated rolls are moved along the intermittently stationary pipe, inside of which a roll mandrel which is likewise calibrated assists in the shaping of the inn...	01/03/1995
5257522	Process of hot forging at ultrahigh temperature A process of hot forging a steel at an ultrahigh temperature, comprising the steps of: heating a steel containing less than 1 wt % carbon in an atmosphere substantially composed of a non-oxidizing gas at a high heating rate sufficient for suppressing the ...	11/02/1993
4996863	Radially convergent hot forging apparatus and method Disclosed is a method and apparatus for hot forging an elongated cylindrical hot billet formed of lightweight metal alloy or metal matrix composite material into an integral high strength structural member having at least two extensive walls projecting ou...	03/05/1991
4830683	Apparatus for forming variable strength materials through rapid deformation and methods for use therein The invention relates to apparatus and accompanying methods for use therein for forming a material (504), which has high strength and good workability, by rapidly deforming a suitable base metal (501) having a banded structure, such as illustratively a pr...	05/16/1989
4768369	Method of forming a pipe fitting A method of forming a pipe fitting of unitary construction having a tubular section with a radial flange at one end of the tubular construction. The method includes forming a solid cylindrical bar, upsetting one end of the bar to form a head thereon, draw...	09/06/1988
4714499	Full length forging method for producing large section, large mass cylindrical sleeves of alloy 625 A process for producing large section, large mass cylindrical sleeves of alloy 625 by employing full length saddle forging technique comprising forming the workpiece by forging it into a full length member, trepanning the member to form the workpiece, sad...	12/22/1987
4714498	Process for producing large section, large mass forged sleeves from large diameter ingots of alloy 625 A process for producing large section, large mass forged sleeves from large diameter ingots of alloy 625 comprising the steps of cutting the ingot to produce the workpiece, trepanning the workpiece and facing the ends of the workpiece, saddle forging the ...	12/22/1987
4559800	Preheat start-up arrangement for stamping and forming presses The connecting arms or connection elements of a metalworking press, such as a metal forming or stamping press, are provided with flat electrical resistance heating pads attached directly to the web section of the connections for applying heat to the conne...	12/24/1985
4559797	Method for forming structural parts Method for producing structures from metal workpieces which may or may not be capable of superplastic forming, such as titanium alloy and steel, using a forming die having a predetermined contour or shape and a cooperating pressure diaphragm formed of a m...	12/24/1985
4534196	Method for manufacturing a mold A method for manufacturing a mold to be used when the powder a titanium alloy is filled in the mold and the powder is hot pressed under static water pressure; the improvement is that the mold is manufactured by subjecting a titanium alloy plate having the...	08/13/1985
4523445	Hot working method and apparatus in the swaging working technology The hot working method using a swaging machine provides for the minimizing heat transfer by the heat conduction from the preheated dies and work through the surrounding mechanical power transmission parts during the swaging process for the workpiece. The ...	06/18/1985
4212189	Tool for isothermal forging A tool for isothermal forging is disclosed. The tool consists of two die halves, at least one of which consists of an assembly of individual components whose side facing the workpiece is provided with a thin electrically insulating layer. The assembly of ...	07/15/1980
4088000	Hot forging machine having die preheating unit A hot forging machine having die preheating unit thereby allowing the die to be heated at a required temperature while the forging machine is in operation. The apparatus comprises a forging machine having a moving bolster, a pair of main rails extending f...	05/09/1978
4050273	Cross-roll forging machine Electric resistance heating means is embedded in a forging tool so that the temperature thereof may be maintained at a desired forging temperature. Therefore the present invention makes it possible to forge light metal alloy workpieces such as aluminum wo...	09/27/1977
4011429	Hot stretch-wrap forming with resistance heating Stretch-wrap forming of titanium parts or the like by resistance heating the part and a steel forming element which is cast into a fused silica die insert. Heating is accomplished by an electrical circuit in which both the part and the element are connect...	03/08/1977

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Class 72/342.8 - Preheating