8 results about "Magnetic pulse welding" patented technology

This invention discloses a high-performance electromagnetic pulse (EMP) welding process for tubular components, comprising the following steps: configuring a corresponding intermediate layer and drive tube according to the welding process requirements of the target weldment; sequentially assembling the inner tube, intermediate layer, and outer tube; sequentially assembling the drive tube, magnet collector, and electromagnetic generating coil; setting the charging voltage and energy storage level of the pulse capacitor; charging the pulse capacitor bank in the charging circuit to a preset voltage; rapidly discharging the high-voltage electrical energy stored in the capacitor bank to the electromagnetic generating coil to generate a transient strong magnetic field; a huge Lorentz force is induced inside the drive tube, propelling the outer tube to violently impact inward at extremely high speed. This invention can achieve high-performance electromagnetic pulse welding of multi-property material combinations and multi-size tubular components; through the design of the magnet collector and drive unit, it achieves electromagnetic pulse welding of low-conductivity, small-gap tubular components; and innovatively proposes the concept of an intermediate layer, thereby realizing the welding of dissimilar or high-performance, difficult-to-join metals.

This invention discloses an electromagnetic pulse welding coil for welding tubular metals. The electromagnetic pulse welding coil is arranged circumferentially along a driving tube. The driving tube can obtain Lorentz force through electromagnetic induction of the electromagnetic pulse welding coil, providing the impact velocity for welding. The electromagnetic pulse welding coil is composed of several circumferentially connected "convex"-shaped structures. The "convex"-shaped structures are arranged with an inward rotation of 90°, and the wide end at the outer end has a notch. One side of the notch is connected to the other side of the notch of the adjacent "convex"-shaped structure through a connecting block, thereby connecting all the "convex"-shaped structures into a whole, forming a ring structure around the driving tube. This invention has the advantages of significantly improving the electromagnetic energy utilization efficiency, increasing electromagnetic energy, and being applicable to electromagnetic pulse welding of difficult-to-deform metals.

The application provides an electromagnetic welding method, device, electronic terminal and computer readable storage medium. The electromagnetic welding method comprises the following steps: acquiring characteristic information of a workpiece to be welded; the workpiece to be welded comprises at least a flying plate and a base plate; the workpiece to be welded is made of conductive material; determining welding parameters of the workpiece to be welded based on the characteristic information of the workpiece to be welded through a parameter determination model; the parameter determination model is used to represent a nonlinear mapping relationship between the characteristic information and the welding parameters; and performing an electromagnetic pulse welding operation on the flying plate and the base plate based on the welding parameters of the workpiece to be welded. Since the parameter determination model can accurately map the nonlinear mapping relationship between the characteristic information and the welding parameters, the application can quickly determine the welding parameters of the workpiece to be welded based on the characteristic information of the workpiece to be welded through the parameter determination model, realize efficient and accurate prediction of the welding parameters of the workpiece to be welded with different characteristic information, and get rid of the dependence on the experimental trial-and-error method, which helps to improve the welding efficiency.

This invention discloses a dissimilar metal electromagnetic pulse welding method assisted by a high-entropy alloy interlayer, belonging to the field of dissimilar metal welding technology. The method involves setting the discharge voltage and discharge capacitor capacity of the electromagnetic pulse welding device, charging the pulse energy storage capacitor, triggering a high-voltage gap switch to discharge, and using a transient magnetic field generated by the electromagnetic coil to drive a first base material plate carrying the high-entropy alloy interlayer to impact a second base material plate at high speed. The interface undergoes high-strain-rate adiabatic shearing to form an in-situ amorphous or nanocrystalline gradient transition layer. This invention organically integrates the high-entropy alloy interlayer with electromagnetic pulse welding technology, effectively suppressing the formation of continuous brittle intermetallic compounds at the dissimilar metal welding interface and significantly improving the mechanical properties of the joint. Furthermore, it achieves quantitative screening of the high-entropy alloy interlayer composition through a three-dimensional orthogonal criterion, overcoming the blindness and low efficiency of traditional trial-and-error material selection methods.

This invention discloses a method and apparatus for determining the weldability parameter range of magnetic pulse welding. The method includes: acquiring the structural parameters, material performance parameters, and preset welding quality requirements of the target welding part; establishing a numerical simulation model of the target welding part based on the structural and material performance parameters; adjusting the simulation conditions to ensure the simulation results meet the preset welding quality requirements; and extracting the collision process deformation information of the target welding part at the welding interface when the requirements are met; matching and retrieving the extracted collision process deformation information with a pre-constructed magnetic pulse welding database; determining the welding process parameters; and obtaining the weldability parameter range. The apparatus includes a welding fixture module and a pulse discharge module, and the collision angle can be adjusted with multiple degrees of freedom by changing the control pad. This invention significantly shortens the magnetic pulse welding process development cycle by constructing a highly versatile and expandable database.

Disclosed is an insulating cushion material for electromagnetic pulse welding a method for controlling deformation of a flyer plate in electromagnetic pulse welding using the insulating cushion material. The insulating cushion material includes rice grains or bean grains. The method includes: preparing a base plate and the flyer plate for welding, and cleaning and drying the base plate and the flyer plate; determining an overlap spacing and a collision gap based on specifications of the base plate and specifications of the flyer plate; selecting the insulating cushion material based on the collision gap; placing the insulating cushion material between the base plate and the flyer plate based on the overlap spacing; starting an electromagnetic pulse apparatus and performing electromagnetic pulse welding according to a set process parameter; cleaning broken particles of the insulating cushion material between the base plate and the flyer plate after completing the electromagnetic pulse welding.

This invention relates to the field of metal welding technology, and discloses a multi-field coupling driven metallurgical-mechanical interlocking composite connection method and apparatus. The method includes: processing locking structures on both sides of the welding center of the welding surface of a first metal substrate; placing insulating cloth on the coil of an electromagnetic pulse welding device, placing a second metal substrate on the insulating cloth, and placing pads on both sides of the welding area on the surface of the second metal substrate; then placing the first metal substrate on the pads, and subsequently placing pressure blocks on the first metal substrate; activating the electromagnetic pulse welding device to drive the second metal substrate to collide with the first metal substrate, causing the first and second metal substrates to undergo solid-state metallurgical bonding in the welding area, and filling the locking structures on both sides of the welding area of ​​the second metal substrate to form a mechanical interlock; thereby achieving solid-state metallurgical bonding and mechanical interlocking between metal materials quickly without the need for structural adhesive, improving peel resistance and connection reliability.