A thermally assisted laser shock welding automatic clamping device and method thereof

Abstract

The invention discloses a warming assistance impact pressure welding automatic clamping device and a method thereof and relates to the field of high-speed impact welding. The warm assistance impact pressure welding automatic clamping device comprises a laser generating device, a welding device, a warming device and a control device, wherein the laser generating device is composed of a pulsed laser, a reflecting mirror, a focusing lens and the like; the control device is composed of a computer, a warming controller, a laser controller and the like; a welding clamping device is composed of a restraint layer, an absorption layer, an impact plate component, a to-be-welded plate, a piston, a bolt, a piston rod, a hole, a pin, a press cake component and the like; and the warming device is composed of a working table, a resistance wire component and a halogen lamp. The warming assistance impact pressure welding automatic clamping device adopts a resistance wire and the halogen lamp to heat the to-be-welded plate and the impact plate and then adopts pulsed laser as an energy source to realize solid-state welding of a metal plate and the plate, so that the problem that the metal plate is difficult to weld at a normal temperature is solved, and the mechanical property of a welded joint is improved; and automatic clamping is realized through thermal expansion and cold contraction of the air.

Description

technical field [0001] The invention belongs to the field of welding in mechanical manufacturing, and in particular relates to an automatic clamping device and method thereof for warm-heat assisted impact pressure welding. Background technique [0002] With the development of science and technology, people realize that a single material can no longer meet people's requirements for improving the performance of materials, so high-speed impact metal welding technology has attracted great attention due to its unique advantages. Especially in the last few decades, researchers have focused on these high-speed impact welding techniques, making them develop rapidly. The most important advantage of this welding technique is that there is no heat-affected zone after welding. Therefore, the material to be welded maintains or exceeds the performance of the base metal, and it will not, like fusion welding, often weaken the strength of the welded joint or cause cracks and corrosion in th...

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Problems solved by technology

The Chinese patent with the application number 201610695861.5 proposes a welding device and method for laser shock welding of loaded metal wires and plates. The formation of intercompounds, high welding quality, can improve the mechanical properties of welded joints. This method is only welded at room temperature. It is difficult to weld metals and wires that require temperature during the welding process, and only a single energy field

The Chinese patent application number 201610688698.0 proposes a device and method for enhancing the bonding strength of foil under laser loading. The invention preheats the base foil under warm conditions to improve its plasticity, which is beneficial to the base foil and the compound foil. The impact welding between them is also conducive to the material flow of the welded compound foil and base foil in the mold, which is beneficial to the clamping between the foils. In addition, the mold driving device in this invention can drive the movable upper mold to move left and right, And it can play a self-locking role, which improves work efficiency. Although the welding is carried out under warm conditions, this method requires an additional cylinder to control the self-locking of the workpiece, and the device is cumbersome and the operation is troublesome.

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