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Welding-following ultrasonic-galvanometer scanning composite laser welding system and method

A technology of laser welding and galvanometer scanning, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as differences in ultrasonic introduction positions, achieve the effects of suppressing pore defects, promoting convection, and improving overall performance

Active Publication Date: 2022-04-19
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

And the ultrasonic application method is mainly non-contact, and the ultrasonic introduction position also has obvious differences.
For the welding of steel D406A for aerospace engine shells, currently only electron beam welding and argon tungsten arc welding are involved, and there is no report and application of welding ultrasonic-galvanometer scanning composite laser welding method

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Embodiment Construction

[0055] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and The specific operation process. The embodiments described below are only some of the embodiments of the present invention, but not all of them. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention.

[0056] Such as Figure 1 to Figure 4 As shown, according to the present invention, a welding ultrasonic-galvanometer scanning composite laser welding system and method can be widely used in the fields of aerospace engine casings and the like. The me...

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Abstract

According to the following welding ultrasonic-galvanometer scanning composite laser welding system and method, a high-frequency vibration energy field of ultrasonic waves and galvanometer scanning laser are coupled, and the beneficial effects of the ultrasonic waves and the galvanometer scanning laser can be brought into full play. And the laser beam acting area of the galvanometer scanning laser is large, so that the gap adaptability of laser welding can be obviously improved, and the assembly difficulty of an airspace engine shell welding operator is reduced. After following welding ultrasonic assistance is introduced, high-frequency vibration can be added in the plate thickness direction, the high-frequency vibration and two-dimensional oscillation stirring superposition of galvanometer scanning laser are achieved, the three-dimensional cooperative oscillation effect on a molten pool is achieved, and meanwhile the good gain effect on the laser scanning effect is achieved. The joint effect of the two can effectively restrain the problems of cold cracks and softening and embrittlement of a heat affected zone which are prone to occurring when the steel for the aerospace engine shell is welded, the defect of air holes can be restrained, the comprehensive performance of a connector is improved, and efficient and high-quality welding of a large aerospace structural part is achieved.

Description

technical field [0001] The invention belongs to the technical field of advanced laser welding manufacturing of aerospace structural parts, and in particular relates to a welding ultrasonic-galvanometer scanning composite laser welding system and method. Background technique [0002] Due to the particularity of service conditions in the aerospace field, the requirements for steel grades are relatively strict. In recent years, with the development of material research and development technology, ultra-high-strength steel has been widely used in aerospace and conventional weapons due to its high specific strength, excellent fatigue performance and certain toughness. D406A (30Si2MnCrMoVE) steel is an ultra-high-strength steel independently developed by my country. After heat treatment and strengthening, the tensile strength is higher than 1620MPa, and the elongation after fracture exceeds 9%. It has excellent strength and toughness matching, and is mainly suitable for solid rock...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/21B23K26/70
CPCB23K26/21B23K26/702
Inventor 张轲刘招李晓强潘丽华
Owner SHANGHAI JIAO TONG UNIV
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