Types of Welds

There are a huge variety of types of welds and the fillet weld is one of the most popular kinds of welds. Other types of welds can not miss in this list include groove welds, surface welds, plug welds, slot welds, flat welds, seam welds, spot welds, upset welds

Fillet Welds

Fillet welds are a weld kind where their size are the same as the thickness of the thinner workpiece or an object jointed together

A staggered intermittent fillet weld refers to two lines of intermittent welding on a joint. An example is a tee joint (see below) where the fillet increments that are in one line are staggered in comparison to the other line.
Chain Intermittent Fillet Weld: Refers to two lines of intermittent fillet welds in a lap joint or T where the welds in one line are approximately opposite those in the other line.
Other terms in accordance with fillet welds include:
Boxing which refers to the continuation of a fillet weld around a corner of a member. It is an extension of the principal weld.
Convexity: Refers to the maximum perpendicular distance from the face of a convex fillet weld to a line joining the toes.

 


Types of Fillet weld positions.

Groove Welds

Groove welding is a reference to the type of joint being prepared. There are different ways to prepare a groove for welding. "V-groove" is a common one with plates butted together forming a kind of "v" shape, this can be at multiple angles. Some may be prepared at specific gaps, with or without lands. There are also "U-groove" (often mad with a air carbon arc gouge), and "J-groove" (half a 'U-groove' and half 90 degree edge, or butt). Researching welding symbols may help you out, each groove or any other joint has a specific welding symbol on a drawing.  In any case, no matter the type of joint, the cleaner, the better.

 

Types of Basic Groove Welds


 
 Types of Groove Welds

Surfacing Welds

These are welds composed of one or more strings or weave beads deposited on an unbroken surface to obtain desired properties or dimensions.
This type of weld is used to build up surfaces or replace metal on worn surfaces. It is also used with square butt joints.

Surfacing is a welding process used to apply a hard,wear-resistant layer of metal to surfaces or edges ofworn-out parts. It is one of the most economical methodsof conserving and extending the life of machines, tools,and construction equipment. 


Plug Weld


Plug welds are circular welds made through one member of a lap or tee joint joining that member to the other.

The weld may or may not be made through a hole in the first member; if a hole is used, the walls may or may not be parallel and the hole may be partially or completely filled with weld metal.

Such welds are often used in place of rivets.

NOTE

A fillet welded hole or a spot weld does not conform to this definition.

Slot Weld


This is a weld made in an elongated hole in one member of a lap or tee joint joining that member to the surface of the other member that is exposed through the hole.

This hole may be open at one end and may be partially or completely filled with weld metal.

NOTE: A fillet welded slot does not conform to this definition.

 


Plug and Slot Welds

Flash Weld


A weld made by flash welding. Flash welding is referred to as a resistance welding process where fusion is produced over the entire abutting surface. Heat is created by the resistance to the current flow between two surfaces and by the application of pressure after heating is mostly complete. Flashing is accompanied by the expulsion of metal from the joint.

Seam Weld


A weld made by arc seam or resistance seam welding where
the welding process is not specified.  This term infers resistance seam
welding.

Spot Weld


A spot weld is a weld made by arc spot or resistance spot welding where the welding process is not specified. This term infers a
resistance spot weld.

Upset Weld


A weld made by upset welding. An upset weld is a resistance welding process where fusion occurs progressively along a joint of over the entire abutting surface. The application of pressure before heating is required and occurs during the heating period. Heat comes from the resistance to the flow of electric current in the area of contact between the surfaces.