TIG Brush has put together a list of the various types of welding joints, their best uses, and important tips for using them. Read more about it here.
A joint is defined by the American Welding Society (AWS) as “the manner in which materials fit together.” Welding has a wide range of applications, and different jobs require various types of welds and joints.
Welding is a complex skill that involves patience, attention to precision, and creativity. Welders must have a thorough awareness of the numerous techniques and practices utilized in the industry, including welding joint types to accomplish their jobs well.
As an electric weld cleaner company, TIG Brush outlines the five most common welding joint types here. Each type is designed to withstand the forces and needs of particular applications.
Butt Joint Welding
A square grove weld is another name for a butt joint weld. It’s the simplest and, by far, the most common type of weld. It is made up of two flat pieces that are parallel to each other.
It is also used for flanges, valves, fittings, and other equipment because it is the internationally accepted way for joining a pipe to itself. It’s a really cost-effective solution.
Welding Styles Used to Create Butt Joints:
- Flare-V-groove weld
- Flare-bevel-groove weld
- J, U, and V-groove weld
- Bevel-groove weld
- Square-groove weld
A square butt joint can commonly be used to achieve full penetration welds. When welding on a thick plate or pipe, it’s nearly impossible to attain 100 percent penetration without using some sort of groove.
Burn through, cracking, porosity, and inadequate penetration are the most common faults in butt joints. However, by changing welding factors such as groove shape, layering, and gap width, these can be avoided.
Tee Joint Welding
A tee joint welding forms when two pieces meet at a 90-degree angle. The edges of a plate or component form a ‘T’ shape when they come together in the middle. Tee joints are a sort of fillet weld that can be made by welding a tube or pipe to a base plate.
This type of weld requires constant inspection for effective penetration into the weld’s roof. To make a tee joint, you can utilize one of the following welding styles:
- Fillet, slot, and plug weld
- J-groove weld
- Flare bevel-groove weld
- Melt-through weld
- Bevel-groove weld
Lamellar tearing is a typical problem with tee joints, which develops due to the joint’s limitation. Welders will frequently insert a stopper to prevent joint distortions.
Corner Joint Welding
Corner welding joints resemble tee welding joints. The only difference is the positioning of the metal. It’s in the middle of a tee junction, whereas corner joints meet in the corner in a closed or open manner, creating an ‘L’ shape.
These joints are popular in the sheet metal industry, where they’re used to make frames, boxes, and other items. An outside corner junction can be fitted in two ways: either a V-groove or a square butt joint.
The styles used for creating corner joints include:
- Spot, edge, and fillet weld
- V, J, and U-groove weld
- Bevel-groove weld
- Corner-flange weld
- Flare-V-groove weld
- Square-groove or butt weld
Lap Joint Welding
The butt joint is a modified version of the lap welding joint or vice versa. They’re formed when two pieces of metal are stacked in an overlapping pattern on top of each other. They’re most typically used to connect two parts of different thicknesses.
Lap joints are usually used for sheet metal and are rarely used on thicker materials. Corrosion or lamellar tearing due to overlapping materials are the potential downsides of this type of welding joint. However, as with anything else, this may be avoided by utilizing proper technique and modifying variables, such as amps and volts, as needed.
Welding styles used to create butt joints include:
- Plug, slot, and spot weld
- J-groove weld
- Flare-bevel groove weld
- Bevel-groove weld
Edge Joint Welding
The metal surfaces are joined together in an edge joint to ensure that the edges are even. Bending one or both plates at an angle can help to form them. The purpose of a weld joint is to bind pieces together and distribute stresses.
The following forces cause stress in welded joints:
- Tensile
- Compression
- Bending
- Torsion
- Shear forces
The welding procedure that will be used has a significant impact on the joint design that will be chosen. Each welding technique has its own set of properties that influence how well it performs. The welds used on various joint designs are additionally affected by the rate of travel, deposition rate, penetration, and heat input.
The following styles are applicable for edge joints:
- Bevel-groove weld
- Corner-flange weld
- Square-groove weld
- Edge-flange weld
- U, J, and V-groove weld
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Contact us today if you have any questions about our services or want to learn more about the benefits of stainless steel weld cleaning.
