Device and method for coil induction auxiliary electromagnetic pulse pipe fitting welding

Abstract

The invention provides a device and method for electromagnetic pulse welding of a high-strength pipe fitting assisted by coil induction heating. The device comprises a magnetic collector and a heater adjacent to the magnetic collector. The magnetic collector comprises an excitation device capable of containing the first pipe fitting welding end and the second pipe fitting welding end. The heater comprises an induction heating coil capable of penetrating through the first pipe fitting and heating the first pipe fitting; during welding, the first pipe fitting is arranged at the induction heating coil in a penetrating mode, the welding end of the first pipe fitting and the welding end of the second pipe fitting are both arranged in the excitation device of the magnetic collector, when the induction heating coil heats the first pipe fitting to the threshold value range, the induction heating coil is powered off firstly, then the excitation device is powered on immediately, and then the first pipe fitting is welded to the second pipe fitting. Enabling the first pipe fitting to impact the second pipe fitting under the driving of magnetic force so as to complete electromagnetic welding; the electromagnetic pulse welding method is beneficial to reducing the strength of the outer pipe fitting, improving the impact speed of the outer pipe fitting, forming a good impact angle, improving the quality of a welding joint of the dissimilar metal pipe fitting and expanding the application range of electromagnetic pulse welding.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a device and method for coil induction heating assisted electromagnetic pulse welding of high-strength pipe fittings. Background technique [0002] Traditional methods are difficult to connect for high-strength outer tubes. Most scholars use the annealing and softening process of the outer tube for pretreatment, which is complicated and inefficient. [0003] Due to the rapid development of society and the huge consumption of resources, the country is constantly introducing energy-saving and emission-reduction policies, and all walks of life are actively saving resources and reducing energy consumption. In aerospace, metallurgy, military, refrigeration, machinery and other fields, the use of some composite material parts can greatly reduce the loss of resources and cost. At the same time, the use of appropriate methods to produce these composite material parts can also save ener...

AI Technical Summary

Problems solved by technology

However, for some outer pipe fittings with high yield strength, due to technical limitations, sometimes the electromagnetic pulse welding equipment does not have enough power to weld them

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