Stud welding is a typical application of capacitor energy storage spot welding.

Stud welding is a method that one end of a stud contacts with the surface of a plate (or pipe fitting), electrifies to ignite an arc, and after the contact surface melts, a certain pressure is applied to the stud to complete the welding. The invention is suitable for high-rise steel bar structures, industrial workshops, highways, railways, bridges, iron towers, automobiles, energy sources, traffic facilities, airports, stations, power stations, pipeline supports, lifting machinery and other steel structures. It is mainly composed of stud welding power supply and welding gun. The basic principle of arc stud welding is to ignite an arc between the stud welding to be welded and the workpiece. When the stud welding head and the workpiece are heated to a proper temperature, under the action of external force, the stud welding head is sent into the welding pool on the workpiece to form a welding joint. According to the different welding power sources used in the welding process, the traditional arc stud welding can be divided into two basic methods: ordinary arc stud welding and capacitor energy storage arc stud welding. Edit the stud welding principle analysis in this paragraph. Stud welding is a method of welding metal studs or other fasteners to the workpiece. There are many ways to realize stud welding, such as arc stud welding, energy storage stud welding, resistance welding and projection welding. Corresponding welding machines are also different, such as arc stud welding machine, energy storage stud welding machine, resistance welding machine, projection welding machine and so on. [1] There are many informal names of stud welding machines in China, such as seed welding machine, plant welding machine, nail planting machine, plant welding machine, stud welding machine, stud welding machine, etc. , refers to the stud welding machine. Energy storage stud welder The energy storage stud welder uses a large-capacity capacitor as the welding energy source, accurately controls the discharge time through the thyristor, and quickly melts the stud welding head in an instantaneous low-voltage and high-current way, so that the gap between the stud welding head and the working face can be quickly melted and the stud welding can be firmly welded on the working face. The whole process lasts about 1-3 ms, and the working schematic diagram of the energy storage stud welder is as follows: Schematic diagram of stud welding The energy storage stud welder uses 220V AC. The intelligent chip accurately controls the thyristor 5, so that the energy storage capacitor 6 can instantly release all the electricity and complete the whole welding process. The stud welding machine with energy storage is widely used in sheet metal engineering, electronic switching equipment, experimental and medical equipment, food industry, household appliances industry, communication engineering, complete sets of industrial cookers, office and banking equipment, coin-operated commodity monitors, glass curtain wall structures and thermal insulation technology. Edit the features of stud welding in this section. 1. It saves time and cost. All stud welding structures do not need drilling, punching, screwing, riveting, screwing and finishing. 2. Continuously expand the application potential of structural design. In stud welding, the welding process is short time, high current and low penetration. Therefore, it can be welded to a very thin plate. For ceramic ring arc stud welding and short-period arc stud welding, the plate thickness can reach 65438±0mm, the capacitor arc stud welding can reach 0.6mm, the energy storage stud welding can reach 0.5mm, and the stud welding workpiece must be welded on one side. It can be welded at any position, and can be welded to a limited vertical partition through a dilator. Because the welding time is short and the deformation after welding is small, trimming is not needed. Because the welding structure does not need drilling, it will not cause leakage. The stud welded joint can achieve high strength, that is, the strength of the stud welded joint is greater than that of the stud itself. After electroplating or high alloy plate welding, there is no indentation on the back. 3. Compared with other welding methods, the advantage of economical and efficient stud welding lies in welding power. For mass-produced workpieces, the welding time can reach 8-40 pieces/min in a short time (3-980ms) (welding power is different according to different stud diameters). The automatic feeding stud welder can achieve the ultra-high efficiency of 60/min. The cost of standard studs is low. There are many types of stud welding equipment and welding guns, and the equipment purchase cost is relatively low. According to the product, it can be made into multi-station automatic welding machine or high-precision gantry numerical control automatic welding machine. Stud welding has high quality reproducibility and low rejection rate. Attention should be paid to the application of stud welding in editing this paragraph: stud welding, like other fusion welding, has certain restrictions on the carbon content in steel-for structural steel stud welding, the carbon content should be within 0. 18%, while the carbon content of base material should be within 0.2%. According to the different stud welding methods, the recommended stud welding materials and base materials should be combined with weldability, otherwise stud welding and base materials will be incompatible with each other. The combination of stud materials and parent materials beyond the recommended range should be tested to determine the weldability and product design requirements, as well as the possibility of relevant inspection and evaluation.