A high-speed deformation connection method and device for dissimilar metal plates

A technology of dissimilar metals and connection methods, applied in metal processing equipment, welding equipment, non-electric welding equipment, etc., can solve the problems of uneven axial distribution of pulse magnetic pressure, low coil structure strength, and high equipment requirements, so as to improve energy Utilization rate, improvement of process flexibility, and high production efficiency

Active Publication Date: 2017-03-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problems of low energy utilization rate, low coil structural strength, uneven distribution of pulse magnetic pressure along the axial direction of the coil, and high requirements for equipment existing in the existing plate magnetic pulse connection technology, and now provides a dissimilar metal plate High rate deformation connection method and device

Method used

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  • A high-speed deformation connection method and device for dissimilar metal plates
  • A high-speed deformation connection method and device for dissimilar metal plates

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Experimental program
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specific Embodiment approach 1

[0028] Specific implementation mode one: refer to figure 1 Specifically explain this embodiment, a high-speed deformation connection method for dissimilar metal sheets described in this embodiment, the method is:

[0029] Place the connected board 2 on the rigid support frame 1,

[0030] Place two insulating partitions 4 on the connected board 2, the thickness of the insulating boards is between 0.5mm-5mm, and there is a gap between the two insulating partitions 4, the spacing is between 3mm-25mm,

[0031] Place the connecting plate 3 on two insulating partitions 4, the thickness of the connecting plate is between 0.2mm-3mm,

[0032] Place the solenoid coil 6 in the induction current channel 5, place the solenoid coil 6 concentrically and coaxially with the induction current channel 5, and the working length of the solenoid coil 6 is greater than the width of the induction current channel 5,

[0033] Press the induction current channel 5 and the connecting plate 3 tightly, ...

specific Embodiment approach 2

[0037] Specific embodiment 2: This embodiment is a further description of the high-speed deformation connection method of a dissimilar metal plate described in specific embodiment 1. In this embodiment, the following steps are performed before the method: the connected plate 2 and The joint surface to be connected of the connecting plate 3 is cleaned, and the contact surface between the induced current channel 5 and the connecting plate 3 is cleaned to reduce the contact resistance.

[0038] In this embodiment, the joint surfaces of dissimilar metal plates to be joined are cleaned, such as steel brush or sandpaper for rust removal, acetone cleaning for degreasing, etc., to ensure that the contact surfaces are smooth and smooth.

specific Embodiment approach 3

[0039] Embodiment 3: This embodiment is to further explain the high-speed deformation connection method of a dissimilar metal sheet described in Embodiment 1. In this embodiment, the magnetic pulse deformation connection device 9 is used to oppose the induced current channel The solenoid coil 6 in 5 is energized, and the magnetic pulse deformation connection device 9 includes: a rectifier bridge circuit, a current limiting resistor R, a capacitor C and a single-pole double-throw switch 8;

[0040] The rectifier bridge circuit is used to rectify the external AC voltage into a DC voltage. The positive pole of the DC voltage of the rectifier bridge circuit is connected to one end of the current-limiting resistor R, and the other end of the current-limiting resistor R is connected to a static end of the single-pole double-throw switch 8. The rectifier bridge circuit The negative pole of the DC voltage is connected to the negative terminal of the capacitor C and a terminal of the sole...

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Abstract

The invention provides a high-speed deformation connecting method and device for dissimilar metal sheets and belongs to the field of plastic deformation connection. The high-speed deformation connecting method and device for the dissimilar metal sheets aim at solving the problem that the energy utilization rate existing in an existing sheet magnetic pulse connecting technology is low. According to the high-speed deformation connecting method and device for the dissimilar metal sheets, a magnetic pulse deformation connecting device is used for conducting discharging on a solenoid coil placed in an induced current channel, and the current of the coil enables an induced current to be produced in a connecting plate adjacent to the coil. The induced current flows in a loop formed by the connecting plate and the induced current channel. The coil current magnetic field and the induced current magnetic field produce superposition to be enhanced in gaps of the series loop of the solenoid coil and the connecting plate-induced current channel. The function for enhancing the magnetic field and the induced current of the connecting plate enables the connecting plate to bear normal downward high-strength pulse pressure load action, downward high-speed deformation and accelerated movement are generated, and then collisions happen between the connecting plate and a connected plate. Acute shearing plastic deformation occurs on the impact contacting interface, and the connection of the dissimilar metal sheets is achieved.

Description

technical field [0001] The invention belongs to the field of plastic deformation connection, in particular to the impact deformation connection technology. Background technique [0002] With the rapid development of the economy and the continuous progress of science and technology, various new materials, processes, and equipment continue to appear, and the performance requirements for parts and components have been raised to a new height. Because dissimilar metals can combine the advantages of two or more metal materials, save precious metals, and reduce the cost of the overall structure, it has attracted great attention in the field of advanced manufacturing. At present, dissimilar metal composite materials are one of the materials that must be used in automobiles and aerospace. However, due to the huge difference in the chemical and physical properties of the two metal base materials to be joined, the traditional welding method is difficult to carry out, and brittle inter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K20/06B23K20/22B23K20/24
CPCB23K20/06B23K20/22B23K20/24
Inventor 于海平童衍辰李春峰
Owner HARBIN INST OF TECH
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