Stud welding is a method in which one end of a metal stud is brought into contact with the surface of a plate (or pipe fitting), and a certain pressure is applied to the stud after the contact surface melts through an electric arc. There are many ways to realize stud welding, such as drawn arc stud welding, energy storage stud welding, resistance welding, projection welding, etc. The informal names for stud welding include the following: nail planting machine, seed welding machine, implant welding machine, nail implanting machine, screw welding machine, screw welding machine, etc.

Principle of stud welding

The welding principle of stud welding is to use the welding heat source to heat the contact surface between the stud and the base material to the melting temperature, and then cool and solidify to form a welded joint. During the welding process, the welding current passes through the contact surface of the welding head, generating heat to melt the contact surface between the stud and the base metal. At the same time, the welding current will also generate a magnetic field, which enhances the heat flow and stirring effect in the melting area and improves the quality of the welded joint. Traditional stud welding machines are generally divided into the following two types: ordinary arc stud welding and capacitor energy storage stud welding.

Stud welding is widely used in various fields, such as high-rise steel structure buildings, industrial plant buildings, highways, railways, bridges, towers, automobiles, energy, transportation facility buildings, airports, stations, power stations, pipe supports, lifting machinery, etc. Steel structure.

Advantages of stud welding

1. Precise welding control: All welding time controls are accurate to 1ms, ensuring the accuracy and stability of welding.
2. Simplified process: The structure of stud welding does not require complicated steps such as drilling, punching, threading, riveting, threading and finishing, which greatly simplifies the process.
3. High welding efficiency: The welding efficiency of stud welding can generally reach 5-20 pieces/minute, and the speed is much faster than other welding methods.
4. High welding strength: The strength of stud welding is generally higher than the strength of the stud itself and the plate itself, ensuring the firmness of the welded joint.
5. Small welding deformation: Due to the short welding time and precise welding energy control of stud welding, the impact on the thermal deformation of the plate is minimal. Especially for energy storage stud welding, the welding deformation is almost negligible.
6. No leakage: Since stud welding does not require drilling, there will be no leakage problems where the studs have been welded, ensuring the overall airtight and watertight effect.

weld studs

Weld studs for concrete are also called energy storage screws, electric bolt welding studs, or type welding nails, etc. Tru weld studs are only used in the sheet metal industry and factories that produce chassis bodies. Although the uses of welding screws and riveting screws are the same, their usage principles are quite different. Pressure riveting screws are fixed by their own locking embossed teeth, while welding screws have a small butt welding point on the head of the screw. The screw is welded to the sheet metal using spot welding technology to fix it. An external thread, so it is called welding screw.

Main types of welded studs

Welding studs are divided into two types according to the thread: external thread welding studs and internal thread welding studs. According to the type, they are divided into two types: headless and headless. According to the material, they are divided into carbon steel, copper-plated steel, stainless steel, copper and aluminum.

Installation of welded studs

Welded studs made of 304 stainless steel can only be used on 304 plates. This needs to be noted. If used on different materials, its welding performance will be different, and sometimes it will become loose. 316 stainless steel spot welding screws can only be used on 316 stainless steel plates.

The material is carbon steel welded studs with a layer of copper coating on the surface. The reason for copper plating is not only to make the welding screws beautiful, but also because after copper plating, it is easier to weld firmly. There is a small protruding point on the head of this copper-plated welding screw. This point is welded. This point is connected to the sheet metal. The high temperature generated by arc welding is used to melt this point and form a whole with the sheet metal. Carbon steel copper-plated welding screws can only be used on carbon steel plates. This is the characteristic of welding screws. It is best to install them on equivalent materials.

Long Ze-A Reliable Fasteners Manufacturer

Long Ze company has focused on Welded studs and Fasteners producing for many of years, which has accumulated rich industry experience and gained excellent reputation. If you need welded studs, just contact us in any time you want.