9 results about "Age forming" patented technology

A mold allowing for rapid positioning, and a mold-based creep-age forming method. A blank sheet is placed on a concave mold surface, and a positioning boss of the blank sheet is fitted to a positioning structure for rapid positioning; a high-temperature sealant is pasted on at least two spaced locations around a flange, a breathable felt is laid on the surface of the blank sheet, and a vacuum bag and the breathable felt are respectively pasted on the high-temperature sealant at different locations of the mold flange; and after the breathable felt and the vacuum bag are pasted, a vacuum nozzle is placed to implement direct vacuumization. The risk of breakage of the vacuum bag is effectively reduced. By means of the method, parts can be rapidly positioned, personnel operations can be reduced, high-precision forming can be achieved, batch forming with high consistency can be achieved, and high heat transfer efficiency can be achieved.

The application discloses a shaping die and a preparation method of a shape memory alloy spring. The die is composed of a shaping mandrel, an end anti-rotation clamping assembly and a radial auxiliary locking hoop. When the spring is prepared, the depth of the spiral limiting groove on the shaping mandrel can be customized. The Ti-rich ternary TiNiCu alloy wire is taken as an object, 20%-50% cold deformation is applied to the wire in advance to introduce high-density dislocations and refine grains, the wire is wound on a special constraint aging forming die, constraint aging treatment is carried out at a temperature of 350 DEG C-550 DEG C for 10-60 minutes, and the target spring is obtained after cooling and rotating demolding. By using the die, the shaping is simple, and stable driving characteristics can be obtained without subsequent cycle training, so that the preparation process of the TiNiCu alloy spring is simplified. Through the synergistic effect of component design, controllable cold deformation and constraint aging, the TiNiCu alloy spring prepared by the application has large driving displacement and high cycle stability, and is especially suitable for application scenarios of long service life, high load and precise driving.

This invention discloses a laser-shock-assisted creep aging forming method for thin-walled components with complex curvature. The method includes: simulating and obtaining difficult-to-form regions; performing laser shock on the difficult-to-form regions of a large-size aluminum alloy thin-walled component sheet; wrapping and fixing a breathable felt around the impacted component; placing the component in a sealed space formed between a vacuum bag and the mold surface; evacuating the sealed space; and then sending the mold into an autoclave for creep aging. After completion, the component springs back, yielding the target surface. This method uses a laser to impact localized areas of a large-size aluminum alloy thin-walled component, introducing dislocations while achieving pre-forming. This provides a good surface foundation for subsequent high-precision creep aging forming of the component, and is suitable for forming parts with complex curvature.

A creep age forming method and device based on digital twin technology provided by the present disclosure. The method acquires sensor data of the aluminum alloy panel during a creep age forming process and inputs the sensor data into the first prediction model and obtains the predicted springback amount and yield strength output by the first prediction model. First difference values between the predicted springback amount and yield strength with the target springback amount and yield strength are determined. Based on the first difference values, first process parameters are determined for updating the process of the aluminum alloy panel by using the second prediction model. The first process parameters are sent to the autoclave, and the autoclave is controlled to perform a process operation with the first process parameters. The present disclosure can adjust the process based on real-time sensor data to obtain components with precise forming and target performance.

The invention belongs to the technical field of integral stiffened wallboard structure manufacturing, and relates to a method for rapidly determining age forming manufacturing parameters of an aluminum alloy integral wallboard. Comprising the following steps of S1, representing a component as a prediction sample according to a discrete representation method, and performing rebound and strength prediction through a deep learning prediction model; s2, optimization of technological parameters and iterative compensation of mold surface springback are carried out based on a prediction result; and S3, establishing a finite element model of the component according to an iteration result, and checking and correcting the finite element model. According to the method, deep learning and a traditional finite element simulation technology are combined, the key process parameters and the springback compensation molded surface of age forming of the aluminum alloy integral wall plate can be rapidly and accurately determined, and technical auxiliary support is provided for forming and manufacturing of a large complex integral stiffened wall plate.

This invention relates to an efficient forming and manufacturing method for high-strength aluminum alloys using high-strain-rate hot forming, belonging to the technical field of high-efficiency preparation and development of high-strength aluminum alloys. After solution treatment, this invention first performs deep cryogenic treatment, followed by preheating and holding at high strain rate to obtain the formed component. Forming and heat treatment are integrated into a single process. Compared to conventional aging forming methods that require tens of hours of heat treatment, this invention significantly shortens the overall process time, improves efficiency, and facilitates industrial application. Simultaneously, it ensures that the strength of the aluminum alloy component is not lower than that of the T6 state, while also achieving good plasticity and ductility.

The application discloses a method for preparing Sc-Er synergistically reinforced Al-Zn-Mg-Cu alloy by electromagnetic directional solidification, and belongs to the technical field of aluminum alloys. The alloy composition comprises Zn, Mg, Cu, Sc, Er, the balance of Al and inevitable impurities. The vacuum induction melting furnace is used for electromagnetic directional solidification, under the synergistic action of an alternating electromagnetic field and a water-cooled copper mold, the coupling of melt electromagnetic stirring and directional heat flow is realized, the grain is significantly refined, and the composition segregation is inhibited. After subsequent homogenization, hot working and aging treatment, the Sc-Er synergistic effect is used to precipitate high-density, heat-stable L12 type Al3(Sc, Er) nanometer dispersed phase in the matrix. The phase and the η' phase precipitated during aging form a double-peak strengthening system, effectively pinning the grain boundary, inhibiting recrystallization and phase coarsening. The application solves the problems of low toughness and poor heat resistance of high-Zn alloy, and realizes the synergistic improvement of strength, toughness and heat stability.

The present application belongs to the technical field of sheet metal forming, and particularly relates to a creep age forming method for strengthening the coordination of deformation in the reinforced area and the thin skin area and application. The method comprises the following steps: calculating the required pressure for part fitting by using the finite element method; calculating the maximum axial stress when the part is fitted with the die surface; obtaining a gasket according to the maximum axial stress; placing the gasket on the surface of the thin skin area and fixing it; placing the part with the fixed gasket on the die, and sealing by using the vacuum method; placing it in a heating furnace or a hot press tank, and fitting the outer surface of the part with the inner surface of the die according to the calculated pressure and the pre-set process parameters; after the creep age is completed, unloading the temperature and pressure on the formed part. The purpose is to solve the problem that the inconsistency of springback after forming caused by the structural differences of the workpiece itself during creep age forming, thereby affecting the accurate forming of the part.

The application provides a rare earth magnesium alloy creep age forming method and application, and the method comprises the following steps: (1) performing heating treatment on the rare earth magnesium alloy until the creep temperature is reached; (2) performing creep forming on the rare earth magnesium alloy reaching the creep temperature under a first tensile stress; and (3) performing aging treatment on the rare earth magnesium alloy under the creep temperature and the first tensile stress; wherein in the step (1), the rare earth magnesium alloy is selected from any one of Mg-9Gd rare earth magnesium alloy, Mg-7.5Gd-1.5Y-0.4Zr rare earth magnesium alloy and Mg-4.3Y-2.9Nd-1.0Gd-0.5Zr rare earth magnesium alloy, and the creep temperature is 200-240 DEG C; and in the step (2), the first tensile stress is 150-250 MPa. The method can improve the formability of the rare earth magnesium alloy, optimize the microstructure and mechanical properties of the alloy, and significantly improve the strength and plasticity of the alloy.