Multifunctional laser combined processing system

Abstract

The invention specifically discloses a multifunctional laser combined processing system. The system comprises an optical fiber laser and a laser welding head connected with the optical fiber laser, and further comprises a wire feeding machine and a wire feeding gun connected with the wire feeding machine, wherein the space position of the wire feeding gun is adjusted through a space adjusting mechanism. The multifunctional laser combined processing system provided by the embodiment can realize a plurality of laser processing methods such as single-laser welding, laser filler wire welding and laser-arc combined welding, in addition, an auxiliary side-blowing protective gas generating device and a bottom-blowing protective gas generating device are involved, so that good welding protection on various metal materials can be realized, the metal materials comprise various colored alloys, active metals, rare metals and the like, so that the satisfactory welding joint performance is obtained.

Description

technical field [0001] The invention relates to a laser multifunctional composite processing system, in particular to a multifunctional comprehensive processing system capable of simultaneously realizing single laser welding, laser wire filling welding, and laser-arc composite welding between various metal and nonmetal materials. Background technique [0002] Due to the unique advantages of high quality, high precision, low deformation, high efficiency and high speed, after only a few decades of development, laser welding technology has been widely used in aviation, aerospace, automobile, electronics and other industries. field, and is also expanding rapidly towards traditional heavy industry fields such as ships. [0003] Compared with traditional welding technology, one of its main advantages is that the laser has excellent transmission and focusing characteristics. After passing through the focusing lens group, all energy can be concentrated at one point, thereby obtainin...

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Problems solved by technology

[0005] In addition, for special materials such as aluminum alloy and magnesium alloy, due to the particularity of the material itself (such as high thermal conductivity, high thermal expansion coefficient, low surface tension of the molten pool, volatility of Mg, Zn, Li alloy components, etc.), the automatic When welding is connected, due to the evaporation of low-boiling point alloy components during melting and solidification, the performance of the joint is reduced, and defects such as cracks, pores, and poor weld formation are prone to occur.

Moreover, many high-strength aluminum alloys have poor weldability. Since this self-fluxing laser welding method does not add any materials, the chemical composition of the molten pool and weld metal can only be determined by the base metal, and it is impossible to obtain a satisfactory welded joint.

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