In recent years, due to the need for laser pointer environmental protection and energy saving. To save the driving energy of the car body. Automobile lightweight has become the trend of the world's automobile development. In order to reduce their own weight, civilian cars and high-speed rail car bodies use a large number of aluminum alloy profiles and plates, and one of the commonly used connection methods for such materials is laser welding. Laser plasma coaxial composite welding technology is a new laser pointer method that combines two high-energy beam welding methods of laser and plasma arc to form a new type of high-energy density heat source and perform welding of various metal materials. This technology has the advantages of laser and plasma welding alone, while overcoming the shortcomings of single laser welding, such as high residual stress and many weld pore defects, it also overcomes the weaknesses of low plasma arc welding efficiency and large thermal deformation of the workpiece .
The types of joints suitable for laser plasma compound welding technology include butt welding, lap welding, stack welding (seam welding), and lap butt combination. Butt welding is a very common form of joint, commonly used for the connection between plates. From a mechanical point of view, it is an ideal joint type. It has better stress conditions, less stress concentration, and can withstand larger static or dynamic loads. It is the joint type most used in welded structures. However, this method requires relatively strict heat input in the welding process. The common welding method is prone to cause excessive heat input and deformation of the component, while the green laser pointer plasma composite welding technology has a small heat input (higher welding speed determines The amount of heat input per unit time is small). It is not easy to deform, and the welding quality is good. The gap adaptability requirements are several times larger than single-beam laser welding, which is suitable for butt welding of thin plates.
The laser pointer is a must for outdoor activities. There are many ways to use it, such as sending an emergency signal. Have you encountered an accident or lost your way while working outdoors? Outdoors, you will be in the natural environment, so you may lose your way due to severe natural disasters such as sudden and untimely weather, high mountains and heavy snow, such as snowfall, rain, lightning strikes and gusts... Will show you how to use the laser pointer outdoors. Dark night lighting in emergency situations and light, smoke and fog that can be used as rescue signals are very effective rescue signals. The high-power laser pointer can quickly light matches and cigarettes, so use the laser pointer to burn dry bushes, grass, fallen leaves, etc., to notify the rescue team and others of your whereabouts. Or turn on the laser pointer and send a rescue signal directly. For mountains, the red laser pointer is easier to see than the green laser pointer. In the case of snow mountains, both are good.