摘要:
A method of forming a part includes: inserting a blank into a die, the die comprising a mold mounted above a sealing counterpart; clamping the blank between the mold and the sealing counterpart; applying first pressure on the blank from the sealing counterpart so the blank is pressed upward to form a shaped part corresponding to the mold; applying a vacuum to the shaped part to hold it against the mold also after separating the mold and the sealing counterpart, the vacuum applied through at least one opening in the mold located in a corner of the mold that the blank does not reach when the first pressure is applied; and discontinuing the vacuum to allow the shaped part to be released from the mold.
摘要:
A method of hydroforming a vehicle rail from an extruded aluminum tube includes the steps of positioning the extruded aluminum tube into a hydroforming die and partially closing the hydroforming die. Next is the step of applying a liquid under a first level of pressure to the extruded aluminum tube in the hydroforming die. This is followed by engaging an inner radius of a bend in the extruded aluminum tube with the hydroforming die before completely closing the hydroforming die and increasing the level of liquid pressure in the workpiece to a second level to form and hydro-pierce a part from the extruded aluminum tube.
摘要:
A punch (2) and a pad (5) are opposed to each other such that a molded portion (3a) of a metal laminate film (3) to be processed is interposed between the punch (2) and the pad (5). An enclosed space (6, 7) is compressed to raise only the temperature of the molded portion (3a) while keeping the vicinity of the molded portion (3a) at a low temperature (S1, S2). After that, the enclosed space (6, 7) is moved with respect to the molded portion (3a) to perform first molding (S3) on the molded portion (3a), and then gas in the enclosed space (6) is released to perform second molding (S4) on the molded portion (3a) by means of the punch (2) and the pad (5).
摘要:
A method for manufacturing an exhaust gas treatment component having at least one structured piece of sheet metal, includes shaping the at least one piece of sheet metal with at least one fluid stream. A device for producing a structured piece of sheet metal is also provided.
摘要:
The present invention provides a process for forming aluminum alloy hydroformed structures for automotive vehicles at low cost. The process continuously casts molten aluminum alloy into aluminum alloy strip material preferably followed by continuously warm rolling the strip material into aluminum alloy sheet material. The sheet material is formed into one or more aluminum alloy tubes and the tubes are hydroformed into the desired automotive vehicle structure.
摘要:
A process for hydroforming an elongate tubular structural member in a mould die, the structural member having portions spaced along its length which have different circumferential dimensions, a first of said portions having a first cross-sectional shape defining a minimum outer circumferential dimension C.sub.1 and a second of said portions having a second cross-sectional shape defining a maximum outer circumferential dimension C.sub.2, the process including the steps of: (i) selecting a precursor tube of constant cross-sectional shape and constant outer cross-sectional dimension along its length and having an outer circumferential dimension C.sub.0 which is greater than or equal to C.sub.1 and being of a cross-sectional shape which can be located within said first cross-sectional shape, and selecting the wall thickness S.sub.0 of the precursor tube so as to fall within the range S.sub.0 .ltoreq.S.sub.1 and S.sub.0 .gtoreq.S.sub.2 wherein S.sub.1 is the average wall thickness of said first portion and S2 is the average wall thickness of said second portion, and (ii) placing the precursor tube in the mould die and hydroforming the precursor tube to produce said tubular structural member.
摘要:
A method for manufacturing a part in the shape of a hollow profile is disclosed, with a hollow profile made of light metal being expanded by high internal pressure deformation. In order to be able to manufacture parts in the shape of hollow profiles based on light metals, even with high degrees of deformation, in simple fashion in a safe process, a sleeve made of a material with a greater ductility than the light metal, especially a steel material, is slid onto the hollow profile. The sleeve is located on the hollow profile in such fashion that a predetermined area of the hollow profile is covered that is to be deformed during subsequent expansion with a high degree of deformation that exceeds the expandability of the light metal. The hollow profile is expanded by expansion by high internal pressure within this predetermined area to a degree beyond the bursting limit, whereupon the sleeve alone is expanded, subjected directly to high internal pressure at the burst point in the final shaped hollow profile, until the final shape of the part is reached in the area that is covered by the sleeve that is held at both ends in a press fit against the hollow profile.
摘要:
An alloy suitable for manufacturing components out of a hollow body by high internal pressure forming contains, in wt. %, ______________________________________ Silicon 0.3 to 1.6 Magnesium 0.3 to 1.3 Iron max. 0.5 Copper max. 0.9 Manganese max. 0.5 Vanadium 0.05 to 0.3 Cobalt max. 0.3 Chromium max. 0.3 Nickel max.0.8 Zirconium max. 0.3 ______________________________________ and other alloying elements, individually at most 0.05, in total at most 0.15, the remainder aluminum.
摘要:
A method and apparatus for forming and consolidating organic matrix composites. An organic matrix composite panel comprising laid-up prepregs is placed between sheets of a susceptor material that is susceptible to inductive heating to form a workpiece. The resulting workpiece is placed within upper and lower dies formed of a material that is not susceptible to inductive heating. An induction coil embedded within the dies is energized and inductively heats the susceptor sheets surrounding the panel. The sheets in turn conductively heat the organic matrix composite panel. A pressure zone between the workpiece and one of the dies is pressurized to form the workpiece to the contour of a forming surface on one of the dies. The pressure in the pressure zone is maintained on the workpiece until the organic matrix composite panel is fully consolidated and formed.
摘要:
A fixed coil induction heater produces quality thermoplastic fusion welds in prefabricated resin composite parts. A susceptor along a bondline between parts aligns with the induction coil segments of a solenoid induction coil along the centerline of the coil. Energizing the coil heats the susceptor to form the weld at the bondline. For this operation, our induction heating workcell uses complementary dies that define a central cavity with an oval pattern of induction coil segments roughly conforming to the shape of the cavity and surrounding all faces of the cavity where we position the preform composite parts and susceptor.