Laser Welding Technology In The Vacuum Interrupter Industry Process Application

Vacuum interrupter, also known as the vacuum switching tube, is the core component of the high-voltage power switch, its main role is to make the medium and high-voltage circuit cut off the power supply through the tube of the vacuum excellent insulation can quickly quench the arc and inhibit the current, to avoid accidents and accidents, mainly used in electric power transmission and distribution control system. The following is an introduction to laser welding technology in the vacuum interrupter industry process applications.
First of all, introduce the principle of vacuum interrupter, vacuum bubble within the vacuum interrupter is the use of high vacuum insulation arc extinguishing medium, sealed in a vacuum by a pair of contacts to realize the power circuit on and off function of an electric vacuum device. When it breaks a certain value of the current, static and dynamic contacts in the separation of the moment, the current contraction to the contacts just separated on a point, there is a sharp increase in resistance between the electrodes and the temperature increases rapidly until the electrode metal evaporation occurs, at the same time the formation of a very high electric field strength, resulting in a very strong launch and gap breakthrough, resulting in a vacuum arc, when the frequency current is close to zero, but also the contact opening distance increases, the vacuum arc of the Plasma quickly spread to the surrounding area, the arc current over zero, the medium of the contact gap quickly from the conductor into an insulator, so the current is broken. Because of the special structure of the contact, the contact gap during the arc will produce the appropriate longitudinal magnetic field, the magnetic field can make the arc uniformly distributed on the surface of the contact to maintain a low arc voltage, so that the vacuum interrupter room has a high arc after the medium strength recovery speed, small arc energy and small corrosion rate. In this way, it improves the ability of the vacuum interrupter to open the current and service life.
Made of glass or ceramic airtight insulation shell, dynamic end cover, fixed end cover, stainless steel bellows composed of airtight insulation system. In order to ensure good airtightness between glass, ceramics and metal, in addition to the requirements of the material itself as small as possible permeability and internal outgassing is limited to a very small value, but also on the sealing of the sealing of the time to have a strict operating process.
Vacuum interrupter laser welding machine is designed by Wuhan Ruifeng Optoelectronic Technology Co., Ltd. elaborate research and development production, vacuum interrupter laser welding machine to replace the vacuum interrupter connected to the plate of the traditional brazing process and riveting process of the complex process, providing simple and fast technical support for the enterprise, but also effective in reducing the original production costs. Vacuum arc extinguishing chamber laser welding machine including the host cabinet, welding head and arc extinguishing cover, arc extinguishing cover fixed in the liftable electric precision rotary table, vacuum arc extinguishing chamber laser welding machine host cabinet installed with the arc extinguishing cover axis perpendicular to the centering device, centering device is set up with a plurality of downward tilted and pressed against the weld piece of the pressure rod, the pressure rod on the weld piece produces a downward pressure and a center of the circle of the force, the number of pressure rods for a number of The number of pressure bars is a plurality, and the horizontal combined force of the plurality of pressure bars is zero. Vacuum interrupter laser welding machine centering device of the three pressure rods in the interrupter cover to produce three points of pressure, the force at each of these three points is decomposed into a downward pressure and a thrust to the center of the circle, three points of thrust balance makes the circular interrupter cover of the rotating center of rotation remains unchanged, which ensures the concentricity of the interrupter cover of the rotating weld, thereby ensuring the interrupter cover of the weld quality. In addition, the three bearings on the centering device instead of the original plane bearings; reduce the original need to manually put in and out of the plane bearings of the steps; make the operation become simple; but also saves time.
Vacuum interrupter laser welding machine features:
Laser welding machine welding more beautiful
Small heat-affected zone when welding, no deformation of the workpiece, no welding scars, solid, smooth and beautiful welding.
High productivity of laser welding machine
Laser welding speed, melting deep, different materials, welding high yield, 2-10 times faster than the traditional welding speed. Equipped with water-cooling equipment, can ensure 24 hours continuous operation.
Laser welding speed, depth, small deformation
Due to the high power density, small holes are formed in the metal material during the laser welding process, and the laser energy is transferred to the deep part of the workpiece through the small holes with less lateral diffusion. Therefore, the laser beam scanning process of material fusion depth is larger. Fast speed, large welding area per unit time.
High flexibility of laser welding machine
Laser welding machine can realize arbitrary angle welding, can be welded difficult to access parts; can be welded a variety of complex welded workpiece and irregular shape of the large workpiece. Realize any angle welding has great flexibility.
Laser welding machine operation is simple
Laser welding machine equipment operation process is simple and easy to learn, easy to start. The professionalism of the staff does not require high, saving labor costs.
Laser welding machine is safer and more environmentally friendly, laser welding green and safe.

The above is the process application of laser welding technology in the vacuum interrupter industry, the welding process of the vacuum interrupter laser welding machine fully guarantees the strength and beauty of the weld, while not destroying the vacuum in the vacuum interrupter cover. Vacuum interrupter laser welding machine to replace the vacuum interrupter connecting plate of the traditional brazing process and riveting process, not only to enhance the production efficiency of the enterprise products but also to reduce the cost of enterprises, laser welding production technology has been unanimously recognized by customers.