Explosive welding least action charging method

Abstract

In an explosive welding process, the collision energy of a substrate and a compound plate interface is overlarge to enable the interface to generate a superfusion phenomenon if the charging amount is overlarge, so that a bonding interface generates various defects to lower the interface intensity so as to greatly lower the quality of the compound plate. The principle of least action is embodied as the principle of lowest energy consumption in the physical process of explosive welding, i.e., the best bonding quality can be obtained with the minimum interface bonding energy, or i.e., the best bonding interface can be obtained by the minimum charging amount. A least action charging method is applied in the explosive welding technology, the charging amount is greatly lowered, the production cost is lowered, in addition, the quality of the compound plate is improved, and meanwhile, various key problems relating to the explosive welding are simplified. The explosive welding least action charging method is characterized in that the charging amount is selected according to the lower limit least value, and an interval between the two plates is selected according to an upper limit maximum value.

Description

technical field [0001] The invention relates to an explosive welding charging method, in particular to a minimum action amount charging method, which belongs to the comprehensive technical field of explosive welding and metal composite materials. Background technique [0002] Many researchers believe that when determining the initial charge process parameters of explosive welding, although there are many adjustable parameters, in the final analysis they are all adjusting three dynamic parameters in explosive welding: collision velocity V P , collision angle β and collision point moving speed V C , the relationship between the three is: V p = 2V c sin(θ / 2). Although within the range of dynamic parameters given by the weldability window, successful explosive welding can be achieved by calculating the amount of explosives at any point, the "window" itself does not directly provide the amount of explosives required for explosive welding. In addition, in practical engineering...

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Problems solved by technology

Although within the range of dynamic parameters given by the weldability window, the explosive amount can be successfully welded at any point to calculate the amount of explosives, but the "window" itself does not directly give the amount of explosives required for explosive welding

In addition, in practical engineering applications, people are most concerned about how to determine the minimum charge amount for successful explosive welding according to the weldability window, while the lower limit of the weldability window only gives The minimum collision velocity Vpmin curve of the plate does not directly give the lower limit charge, and it is considered that the charge calculated by taking points outside the lower limit cannot achieve successful explosive welding of the composite plate. In order to ensure the reliable welding of the composite plate , tends to be taken in the middle of the solderability window

Moreover, at the same time, the two direct parameters of the explosive welding charge thickness parameter and the installation gap have not been considered together. Therefore, the currently determined explosive welding parameters are not the best welding parameters, and the interface quality of the obtained composite plate has not reached Best state

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