Industry solutions for three-point weld screws and spot weld screws

Weld screws are also known as energy storage screws, bolt weld studs, or weld studs. Weld screws are used in a relatively small range of applications, only in the sheet metal industry and in factories that produce chassis and bodies. Weld screws and rivet screws are used for the same purpose, but the principle of use is very different. Pressure rivet screws through their own locking knurled teeth fixed, while the weld screws in the head of the screw have a small butt weld, the screw through the spot welding technology welded to the sheet metal to make it fixed. The screws have an external thread, so they are called welded screws. Screws are a standard fastener widely used in industrial production. There are many ways to connect the screws, among which three-point welded screws and spot-welded screws are two traditional connection methods: Three-point weld screws and spot weld screws features, application areas, as well as advantages and disadvantages.

Three-point welding screw characteristics and production process applications

1. Characteristics: Three-point welding screw is a way to realize the connection by welding the screw on the workpiece to form three welding points. It has the following characteristics:

Solid connection: Since the welded screw relies on high-temperature melting to connect different materials, the connection performance is very excellent and can ensure the solidity of the connection. The three welding points are located at the head and both sides of the screw, which makes the contact between the screw and the workpiece closer and the connection more solid.

Wide range of applications: three-point welding screws are suitable for the connection of various metal workpieces, whether it is a thin plate or a thick plate, can be connected in this way, the welding screws can be related to several materials at the same time, high efficiency, saving costs and time.

Simple process: the production process of three-point welding screws is relatively simple; only welding equipment and screws can be completed without additional processing procedures; welding nails connected to the equipment is relatively simple, does not require complex tools and equipment, only simple equipment and tools can be completed.

2. Application areas: Welding nails are not limited by materials and can be connected to various materials, such as metal, wood, plastic, etc. Three-point welding screws are widely used in automobile manufacturing, home appliance manufacturing, aerospace, and other fields. For example, in automobile manufacturing, three-point welding screws are commonly used to connect the body and chassis to increase the stability and rigidity of the whole vehicle.

3. Advantages of welded screws:

High strength: The strength of welded connections is higher than that of other connections and can withstand larger loads.

Good sealing: The welded connection can realize complete sealing and avoid gas, liquid, and other fluid leakage.

Beautiful appearance: welded connections have a neat and attractive appearance, without the threads, screw holes, etc. of other connections.

High reliability: Welded connections are not at risk of loosening or falling off and can be kept connected for a long time.

The three-point welded screw connection is firm and can withstand significant moments and tensile forces. At the same time, the production process is simple, low cost, welded screw connection is stable, and can ensure the safety of the connection part.

4. Disadvantages of welded screws:

1) There is a heat-affected zone near the welding, and the material becomes brittle;

2) The residual stress of welding makes the structure prone to brittle damage, and the residual deformation changes the shape and size of the steel structure;

3) Welding cracks, once they occur, will be easy to expand.

As the welding process needs to heat the screws and workpieces, thermal deformation and residual stress may occur, affecting the quality of the connection, cracks, porosity, unwelded penetration, slag entrapment, biting edges, burn-through, cratering, collapsing, and unwelded full.

5. Advantages and disadvantages of welded connections, welded connections compared with rivets and bolts, have the following advantages:

(1) no need to punch, save labor and time;

(2) any shape of the components can be directly connected, and the connection structure is convenient;

(3) airtight, watertight, structural rigidity, better integrity.

Spot Welding Screws Characteristics and Application Industry Solutions

1. Characteristics: Spot welding screw is a way to realize connection by spot welding the welded part of the screw to the workpiece. It has the following characteristics:

Fast welding speed: Spot welding screws have a fast welding speed and can complete the connection in a short time.

Strong applicability: spot welding screws are suitable for the connection of various metal materials, whether it is a thin plate or a thick plate, can be connected in this way.

Firm connection: the welded joints formed between the soldered part of the spot welding screws and the workpiece are solid and reliable and can withstand significant moments and tensile forces.

2. Application areas: spot welded screws are widely used in automobile manufacturing, home appliance manufacturing, electronic equipment manufacturing, and other fields. For example, in automobile manufacturing, spot-welded screws are often used to connect the body and chassis to increase the stability and rigidity of the vehicle.

3. Advantages and disadvantages:

Advantages: spot welding screw welding speed is fast, which can significantly improve the production efficiency. At the same time, the weld joint formed between the welded part and the workpiece is firm and reliable.

Disadvantages: the production process of spot welding screws is relatively complex, requiring specialized welding equipment and process control. In addition, the welded portion of spot weld screws may cause damage to the surface of the workpiece.

Size specification of welding screws

1. Length: The length of welding screws is generally between 10mm-50mm; the specific size will be selected according to the use of the scene and needs.

2. Diameter: The diameter of weld screws is generally between 3mm-6mm, also according to the use of the environment and the need to choose.

3. Thread type: welding screw thread type is divided into two types of internal and external threads, commonly used M4, M5, and M6 and other size specifications.

How to choose the suitable welding screws?

1. According to the thickness and hardness of the welding plate, select the appropriate length of the welding screw.

2. According to the need to choose the correct diameter and thread type of welding screws.

3. Choose the suitable material and surface treatment Depending on the actual use of the environment.

Precautions for the use of welding screws

1. Welding screws must be in contact with the welded plate surface to ensure solid welding.

2. During the welding process, the angle between the screw and the plate surface should be noted, and try not to form noticeable bumps or depressions on the plate surface.

3. Too large or too small an angle of the weld screw will affect the fit of the threads and nut, resulting in loosening of the joint.

4. The material and surface treatment of the weld screws need to be selected according to the specific occasion to ensure their robustness and corrosion resistance.

Three-point welded screws and spot-welded screws are two standard screw connection methods. Three-point welded screws through the welding screw head and both sides of the formation of three welding points to realize the connection, applicable to a wide range of production processes, are simple. Spot weld screws, on the other hand, are connected by spot welding the welded part of the screw to the workpiece, which is fast and highly applicable. Both types of connections have advantages and disadvantages and should be based on the specific circumstances of the appropriate connection. Whether it is three-point welding screws or spot welding screws, they all play an essential role in industrial production for the development of various industries to provide a reliable connection solution.

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