Device and method for welding metal through laser shock waves
A technology for welding metal and shock waves, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of only welding thin or micro materials, few types of weldable materials, poor controllability, etc., and achieve various shapes Variety, diversification, improve the effect of anti-fatigue
Active Publication Date: 2021-06-11
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Problems solved by technology
[0004] The present invention provides a device and method for welding metals using laser shock waves, which can solve the problem of less types of weldable materials, single shape, and possible problems in the existing cold welding technology. Poor controllability, only thin or miniature materials can be welded
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[0036] The present invention is described in detail below in conjunction with examples, but the present invention is not limited to these examples.
[0037] An embodiment of the present invention provides a device for welding metals using laser shock waves, such as Figure 1 to Figure 5As shown, the device includes: a laser output unit, an impact welding head 11 and a welding groove 12; the laser output unit is used to output a pulsed laser beam 31; the impact welding head 11 is arranged on the output optical path of the laser output unit; the welding groove 12 is set Directly below the impact welding head 11, a positioning structure is arranged therein, and the positioning structure is used to limit the positions of two workpieces to be welded; a nozzle 13 is connected to the outer wall of the welding groove 12, and the nozzle 13 is used to spray the workpieces to be welded. water flow, so that the water flow covers the impact welding material 14 on the workpiece to be welded...
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Abstract
The invention discloses a device and a method for welding metal through laser shock waves, belongs to the technical field of laser shock welding, and can solve the problems that in an existing cold welding technology, weldable materials are few in variety, single in shape and poor in controllability, and only thin or micro materials can be welded. The device comprises a laser output unit, a shock welding head and a welding groove, wherein the shock welding head is arranged on an output light path of the laser output unit; the welding groove is arranged under the shock welding head, and a positioning structure is arranged in the welding groove and used for limiting the positions of two to-be-welded workpieces; a spray head is connected to the outer side wall of the welding groove and used for spraying water flow to the to-be-welded workpieces in order to enable the water flow to cover shock welding materials on the to-be-welded workpieces; and the shock welding head is used for converging the pulse laser beams to form converging light spots, and the converging light spots are used for irradiating the shock welding materials on the to-be-welded workpieces in order to weld the two to-be-welded workpieces. The device and the method are used for cold welding of the workpieces.
Description
technical field [0001] The invention relates to a device and method for welding metal by using laser shock waves, belonging to the technical field of laser shock welding. Background technique [0002] Common welding techniques can be divided into hot welding and cold welding. Traditional welding is all thermal welding, which involves heating and melting the welding material, which will weaken the metal properties. Different from traditional welding, there is no heating process in cold welding, and there are roughly electromagnetic pulse welding (MPW), explosive impact welding (Explosive welding-EW), and ultrasonic welding (Ultrasonic welding-UW). The welding mechanism of electromagnetic shock and explosive shock is similar. They use the powerful Loren magnetic force and explosive shock force respectively. The combined action of interface waves and jets will be generated between the contact surfaces of welding metal materials. The surface layer can be regarded as an instant...
Claims
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IPC IPC(8): B23K26/21B23K26/0622B23K26/02B23K26/146B23K26/046
CPCB23K26/21B23K26/0622B23K26/02B23K26/146B23K26/046
Inventor 王吉张文武
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI