摘要:
A press assembly (100) for pressurising a body, comprising a cartridge (300) for generating a load on the body, a frame (200) comprising a bore for accommodating the cartridge, a chamber for accommodating the body and a fastening mechanism (400) for fastening the cartridge to the frame when the cartridge is inserted into the bore; the bore having an open proximate end into which the cartridge can be inserted and the bore being in communication with the chamber at a distal end. The fastening mechanism is located outside the bore.
摘要:
A device for compacting a contoured elongate composite layup includes flexible first and second fiber reinforced resin flexible sections flexible along their lengths. The first section is flexible within a first plane and the second section is flexible within the first plane as well as within a second plane.
摘要:
A handheld manual trash compactor for use with residential curbside refuse carts and containers that is adjustable in height including a plunger and actuating lever which hooks into existing handles of the containers using leverage to compact waste further into the container enabling more space and proper lid closure.
摘要:
A fastening element includes, but is not limited to at least one first body, at least one second body, and at least one locking device. The first body and the second body in each case on one end include, but are not limited to a pressing element for pressing an insulation package against an object. The first body and the second body movably engage each other so that the pressing elements are located at opposite ends of the fastening element. The at least one relative position of the first body to the second body may be fixed by means of the locking device. In this way effective fastening of insulation packages to objects in an aircraft cabin may be ensured without all the insulation packages having to comprise openings for accommodating fastening pins.
摘要:
A reconfigurable tool and/or die geometry and methods of use generally comprise forming at least a portion of a shape defining surface with a shape memory material. In response to an activation signal, the shape memory material changes geometry of the shape defining surface to provide a means for forming parts with different geometries from the same tool and/or die. In an alternative embodiment, an insert for a tool and/or die can be used, wherein the insert has at least a portion of its shape defining surface formed of a shape memory material. Also disclosed are processes for forming a first part with a defined geometry and a second part with a defined geometry different from the first part defined geometry using a reconfigurable tool and/or die as well as a reconfigurable insert with a standard tool and/or die.
摘要:
The invention relates to a metal extrusion press (1), in particular a horizontal metal extrusion press (1), comprising a charging device (7) for charging an ingot to be extruded (6) into an ingot receptacle. According to the invention, the charging device (7) brings an ingot (6) that is received in a charging position and held in a charging tray (18) into the centre or the axis (8) of the extrusion press in order to insert it into the ingot receptacle. The charging device (7) of said metal extrusion press comprises an ingot insertion unit (28) which contains two intercoupled motion-dependent sliding cylinders (29a, 29b). Said cylinders (29a, 29b) are fixed by their piston-rod heads (31a, 31b) to a linear guided insertion finger (25) and their cylinder bases are likewise pivotally mounted in bearing rings (30a, 30b).
摘要:
A method of press-working an inorganic substrate, which method uses a vacuum press machine having an air plunger type pressurization system and comprises bringing upper and lower heat plates which have been heated up to a predetermined temperature into contact with a combination set disposed between the upper and lower heat plates after or before the initiation of pressure reduction of a press atmosphere or under a reduced pressure and then carrying out a low pressure loading of from the initiation of pressurization to 0.05 Mpa over 10 seconds or longer and a press machine which is suitable for the above press-working method and which can set and control a low-pressure of 0.02 MPa or lower and comprises an air plunger that works as an air damper when the upper heat plate descends.
摘要:
An electric pulsed power vacuum press assembly for fast pulse heating of electrically conductive materials at high pressures is disclosed. The fast pulse capability is provided for by a current path (49) that is characterized by extremely low inductance and resistance. The low inductance of the press structure is achieved through the use of parallel plate (52), (56) and coaxial (64), (98) transmission line elements in the circuit. The use of a vacuum environment (46) reduces contamination of the material being processed. The press is useful for achieving fine scale adiabatic heating in dielectric/conductor mixtures (11) such as graphite and diamond, allowing for extreme heating of the conductive phase with minimal heat transfer to the dielectric phase during the heating pulse. Fine scale adiabatic heating enables phase changes and consolidation to be achieved in a composite with minimum energy input and minimum heating of the press structure.
摘要:
Vertical guide posts are securely mounted on a base plate, and a cylinder plate is securely mounted on top portions of the guide posts. A hydraulic cylinder is mounted on the cylinder plate and a movable plate is slidably mounted on the guide posts. A piston rod of the hydraulic cylinder is connected to the movable plate. By vertically moving the movable plate, press work is performed.
摘要:
An apparatus using a shape memory alloy such as nickel-titanium as a die material in one embodiment is used for performing pseudo-isostatic pressing by using a uniaxial mechanical press to densify a powder mixture, preform or presinter with or without the use of pressure transmitting powder. The apparatus can also be used to perform thermal mechanical work on any article to obtain near net shape. With controlled thermal mechanical processing and fabrication of the shape memory alloy into a die configuration, its shape can be changed from a low temperature configuration to a high temperature configuration after being heated. As a result, near net shape parts can be cold or hot pressed pseudo-isostatically without using an expensive and sophisticated press apparatus of the prior art. In a second embodiment, the shape memory alloy is employed as the expansion tooling for near net shape forming of composite materials. This embodiment utilizes a thin wall and a thick wall tube which are made of a shape memory alloy to perform near net shape compression molding of fiber reinforced composites into closed form structure.