CN-122007155-A - Adjustable electric pulse auxiliary rolling forming device for self-adaptive plates with different widths and thicknesses

Abstract

The invention relates to the field of metal composite plate rolling forming, in particular to an adjustable electric pulse auxiliary rolling forming device for self-adaptive plates with different widths and thicknesses, which comprises a frame module, a conveying roller shaft module, a roller shaft conductive triangular bracket module and a self-adaptive hydraulic rod telescopic assembly module, wherein all modules are positioned on a working platform, metal composite plate materials are respectively conveyed to a triangular roller shaft through front-end conveying rollers, the self-adaptive hydraulic rod telescopic assemblies are clamped by the roller shafts in a fitting way with the plates, then the roller shafts below the plates conduct electricity, a transverse pulse current effect is provided on the pre-bonding surface of the plates, the plates are rolled into the composite plate under the action of a rolling mill device after the conduction, the stress concentration condition of the metal materials is reduced, the device adopts a roller shaft pulse current application mode, the conductive area is increased, the electro-plastic effect and the Joule thermal effect generated through the current are optimized, the forming quality and the bonding performance of the composite plate are optimized, the deformability of the metal is reduced, and the plasticity is improved by effectively utilizing the pulse current, and simultaneously, the thermal effect and the non-thermal effect of the current can also effectively eliminate the residual stress generated in the rolling process, so that the composite plate with better forming effect is beneficial to be obtained.

Inventors

• GAO XIANGYU
• YAN RENJIE
• MA YUNLONG
• REN ZHIWEI
• HUANG ZHIQUAN
• WANG YANYAN
• Zou Jinchao
• WU PENGFEI
• GAO BO
• ZHANG CHAOZHEN
• WANG FEIYU

Assignees

• 太原科技大学

Dates

Publication Date

20260512

Application Date

20260331

Claims (5)

1. 1. The utility model provides an adjustable electric pulse auxiliary rolling forming device of different wide and thick plates of self-adaptation, its characterized in that includes frame (1), conveying roller (4), roller electrically conductive tripod (6), self-adaptation hydraulic pressure pole expansion assembly (11), in the mechanism, the panel conveys to roller electrically conductive tripod (6) through conveying roller (4), and self-adaptation hydraulic pressure telescopic rod (11) tensioning, panel and upper and lower roller closely laminate, and the below roller is connected the power.
2. 2. The adjustable electric pulse auxiliary rolling forming device for the self-adaptive plates with different widths and thicknesses is characterized in that the metal plates are conveyed through a conveying roller shaft (4) in front of a frame (1), two groups of hydraulic telescopic rods (8) are arranged between the roller shafts and used for driving two baffles (7) to synchronously move the baffles in opposite directions or back to each other, one end of each hydraulic telescopic rod is connected to the frame through a hinged seat, the other end of each hydraulic telescopic rod is fixedly connected to the corresponding baffle (7) through a connecting plate, and the baffles are driven to reciprocate in the horizontal direction through telescopic movement of each hydraulic telescopic rod (8), so that the width of a conveying channel is adjusted, and the adjustable electric pulse auxiliary rolling forming device is suitable for conveying plates with variable specifications.
3. 3. The adjustable electric pulse auxiliary rolling forming device for the self-adaptive plates with different widths and thicknesses is characterized in that when the metal plates are conveyed to a roller shaft conductive triangular bracket (6) through a front conveying roller (4), an upper insulating roller shaft (9) is attached to the upper surface of the plates, a lower left energizing roller shaft and a lower energizing roller shaft are attached to the lower surface of the plates, the upper roller shaft and the lower roller shaft form stable three-point support and clamping on the plates, a self-adaptive hydraulic telescopic rod (11) of a hinge link is arranged on a bevel edge of the triangular bracket, and the self-adaptive hydraulic telescopic rod (11) actively stretches, so that the precise control of the apex angle of the triangular bracket is realized, and the device can actively adapt to the plates with different thicknesses.
4. 4. The adjustable electric pulse auxiliary rolling forming device for the self-adaptive plates with different widths and thicknesses is characterized by comprising an upper electrifying component and a lower electrifying component, wherein the upper electrifying component and the lower electrifying component are structurally symmetrical and are oppositely arranged on the upper side and the lower side of a plate conveying path, the lower electrifying component comprises a first roll shaft conductive triangular bracket (6), a first hydraulic telescopic rod piece (15), a first upper insulating roll shaft (9) and a first lower electrifying roll shaft (10) (12), the first self-adaptive hydraulic telescopic rod piece (15) is arranged between the middle points of two oblique sides of the first roll shaft conductive triangular bracket (6) and is used for driving the change of the vertex angle of the triangular bracket so as to adjust the distance between the first lower electrifying roll shafts (10) (12); The upper power-on assembly comprises a second roll shaft conductive triangular bracket (6), a second self-adaptive hydraulic telescopic rod (11), a second lower insulating roll shaft (14) and second upper power-on roll shafts (13) (16), wherein the second roll shaft conductive triangular bracket (6) is inversely installed, the second self-adaptive hydraulic telescopic rod (11) is arranged between the middle points of two oblique sides and is used for driving the change of the vertex angle of the inversely arranged triangular bracket so as to adjust the distance between the second upper power-on roll shafts (13) (16); When the plate thickness is changed, the two groups of hydraulic telescopic rods synchronously or respectively act, so that the distance between the upper and lower electrified roll shafts is matched with the thickness of the plate, and synchronous self-adaptive electrifying treatment on the double-sided pre-combined surface of the plate is realized.
5. 5. The self-adaptive electric pulse auxiliary rolling forming device for plates with different widths and thicknesses is characterized in that a roller shaft conductive triangular bracket (6) is of an isosceles triangle structure and is integrally and horizontally arranged, an upper insulating roller shaft (9) is rotatably connected to the top angle of the roller shaft conductive triangular bracket (6), an insulating sleeve is coated on the periphery of the upper insulating roller shaft and is used for abutting against the upper surface of the plate and providing clamping force, two lower electrifying roller shafts (10) (12) are rotatably connected to the two bottom corners of the roller shaft conductive triangular bracket (6) respectively and are used for abutting against the lower surface of the plate, and a pulse current generating device is used for enabling positive electrodes and negative electrodes of the pulse current generating device to be electrically connected with the two lower electrifying roller shafts respectively, wherein the insulating sleeve of the upper clamping roller shaft blocks current flowing in the vertical direction, so that pulse current is conducted along a path of 'left-lower positive electrifying roller shaft (10) -right-lower negative electrifying roller shaft (12)', pulse current is focused on an interlayer interface to generate joule heat, and energy waste caused by splitting current along the whole section of the plate is avoided.

Description

Adjustable electric pulse auxiliary rolling forming device for self-adaptive plates with different widths and thicknesses Technical Field The invention relates to the field of metal composite plate rolling forming, in particular to an adjustable electric pulse auxiliary rolling forming device for self-adaptive plates with different widths and thicknesses. Background Along with the continuous improvement of the requirements of light weight and high performance materials in the fields of aerospace, petrochemical industry, rail transit and the like, the layered metal composite material has wide application prospect in the fields of aerospace, rail transit, petrochemical industry and the like because the layered metal composite material has the excellent properties of each component metal, such as high strength, corrosion resistance, high electric conductivity, high thermal conductivity and the like. However, conventional rolling compounding processes typically require hot rolling at high temperatures, or cold rolling at room temperature with large deformation, followed by a subsequent diffusion annealing process. The problems of high energy consumption, long process flow and easy generation of brittle intermetallic compounds at interfaces at high temperature exist in the methods generally, so that the mechanical properties of the composite board are deteriorated. The pulse current auxiliary rolling technology utilizes the electro-plastic effect and the joule heating effect generated when the pulse current passes through the metal, can obviously reduce the deformation resistance of the material and improve the plasticity, and meanwhile, the point discharge effect of the current is also beneficial to breaking and cleaning the oxide film on the surface to be compounded, so that the metallurgical bonding of an interface is promoted. Research shows that the pulse current is introduced into the rolling process, so that the effective compounding of difficult or easy-to-deform metal can be realized at a lower temperature, the excessive generation of interfacial brittle compounds can be inhibited, and the comprehensive performance of the composite board is improved. In the early technical schemes, the electric brushes are mostly clamped on the surface of the plate, however, in the schemes, the current paths are longer and more dispersed, a large amount of current flows in the plate surface in a disordered manner, the energy dissipation is serious, the effective current density acting on the composite interface is lower, and the interface strengthening effect is limited. Therefore, how to construct a pulse current auxiliary rolling device which can adapt to a variable-specification plate and keep stable, efficient and uniform current introduction in a high-speed continuous rolling process becomes a technical problem to be solved in the field. Disclosure of Invention The invention aims to provide an adjustable electric pulse auxiliary rolling forming device for self-adaptive plates with different widths and thicknesses, so as to solve the problems, achieve the effect of improving the plate bonding interface, and adapt to electrifying of plates with different specifications. The invention provides an adjustable electric pulse auxiliary rolling forming device for self-adaptive plates with different widths and thicknesses, which is characterized by comprising a frame, a conveying roll shaft, a roll shaft conductive triangular support and a self-adaptive hydraulic rod telescopic assembly, wherein in the mechanism, the plates are conveyed to the roll shaft conductive triangular support through the conveying roll shaft, the self-adaptive hydraulic telescopic rod is tensioned, the plates are tightly attached to an upper roll shaft and a lower roll shaft, and the lower roll shaft is connected with a power supply. Preferably, the self-adaptive electric pulse auxiliary rolling forming device for plates with different widths and thicknesses is characterized in that a metal plate is conveyed through a conveying roller shaft in front of a frame, two groups of hydraulic telescopic rods are arranged between the roller shafts and used for driving two baffles to synchronously move the baffles in opposite directions or back to back, one end of each hydraulic telescopic rod is connected to the frame through a hinging seat, the other end of each hydraulic telescopic rod is fixedly connected to the baffle through a connecting plate, and the baffles are driven to reciprocate along the horizontal direction through telescopic movement of each hydraulic telescopic rod, so that the width of a conveying channel is adjusted, and the self-adaptive electric pulse auxiliary rolling forming device is suitable for conveying plates with variable specifications. Preferably, the self-adaptive electric pulse auxiliary rolling forming device for plates with different widths and thicknesses is characterized in that when a metal plate is conveyed to a roller s