With the continuous development of the plastics industry, the concept of environmental protection has become increasingly popular. With environmental protection requirements and lightweight trends, more and more plastics are replacing metal parts in industrial products, and plastic laser welding has more advantages over other welding technologies:
1. Non-contact welding, no physical contact with the workpiece to be welded, no chemical reaction of thermoplastics, can be operated in an industrial environment, suitable for the medical and food industries that require hygiene and safety. The medical industry is mainly used in injection systems, medical electronic equipment, various artificial transplants and ostomy products.
2. The shape and size of the laser beam can be adjusted to control the size of the heat-affected zone and the joint area, with high degree of freedom and good flexibility. It does not limit the size and shape of the parts to be welded, and can realize two-dimensional or even three-dimensional welding, which provides a basis for the production of diversified customized parts.
3. The welding speed is fast, the welding seam strength is high, there is no flash, no residue, which can ensure the good appearance of the welding area. Relevant data shows that for ordinary passenger cars, non-metallic materials account for about one-third of the weight, and some models have a larger proportion. Plastics are one of the four major non-metallic materials for vehicles. The high-end car bumper adopts plastic laser welding to achieve the best of both strength and appearance. Other laser welding such as car filters, gas-liquid separators, car dashboard shells, electronic door openers, gearboxes, etc. can play a good effect.
4. Precise and firm, airtight, no water leakage, can greatly reduce thermal stress and vibration stress, it is most suitable for precision electronic components and easily damaged devices.
