Application background Laser oscillating welding technology was born out of the urgent need for welding quality and efficiency in modern manufacturing. Traditional welding technology has deficiencies in precision, strength and complex structure, which has prompted the rapid application of laser welding in various fields. However, it still has defects such as pores and cracks, and has limitations in welding dissimilar materials and complex-shaped parts. It is difficult to meet the stringent requirements of high-end fields such as aerospace and automobile manufacturing, affecting product quality, safety, production efficiency, etc., and increasing the manufacturing cost of enterprises. Against this background, laser oscillating welding technology came into being.

Laser cleaning has become an important cleaning method and is widely used in the manufacturing industry. With the rise of refined production, laser cleaning hardware technology has also undergone multiple upgrades.

Our country is in the process of transformation and upgrading of manufacturing from low-end to high-end manufacturing. Low-end manufacturing accounts for a high proportion. The macro-processing market covers both low-end and part of high-end manufacturing. The market demand is large. Therefore, the market capacity of fiber lasers is relatively large. The domestic low-power fiber lasers are highly localized, and there are many large-scale domestic manufacturers. According to the "China Laser Industry Development Report", low-power fiber lasers have been fully replaced by domestic products; in terms of medium-power continuous fiber lasers, domestic quality has no obvious disadvantages, the price advantage is obvious, and the market share is equivalent; in terms of high-power continuous fiber lasers, domestic brands have achieved partial sales.

For laser wire-filling welding of butt joints of commonly used materials, in order to improve weld formation, it is generally recommended that the laser source and fiber core diameters, and the welding head configuration should ensure that the focused spot diameter is between 0.4mm and 0.6mm, and the welding wire should be of appropriate grade.