Types of weld joints-weldmetals

 Types of weld joints

 Types of weld joints

Here are only five basic types of weld joints: The Corner Joint, butt joint, Edge Joint, Lap Joint, and T-Joint, the most common additions would be

 weld joints

Described in terms of their uses, advantages, and disadvantages, combined preparation and economy.

Four basic weld types.

They are bead (surface) weld, fillet weld, groove weld,

and plug (slot) weld.

•  bead weld in a weld, also called surface weld,

Welds are single-pass deposits of metal, as illustrated in

a. Bead weld is used to make metal pads

and to replace metal on worn surfaces.

•  Fillet weld in weld consists of one or more beads

Deposited at right angles formed by the two plates as Fillet welds take up a triangular cross-section due to the space placed at the weld joint. weld symbol

                                                 welds joint

Takes on the same triangular shape used for fillet welds.

weld, so it is easily recognized. have open corner joints

Also welded with a fillet weld. it is essential to understand

The terminology is applied to a fillet weld. various parts

A fillet weld is shown in  an important aspect

A weld has its profile. The weld face can be convex,

concave, or flat. This aspect is important when determining the size of fillet welds, which will be covered later.

in this text.

Measurement of groove welds

•  Groove weld in weld consists of one or more

The beads are deposited in a groove, as shown in Fig. 4-2C.

Groove welds are used for butt joints. may butt joint

with square edges left unprepared, or can be prepared

With bevel or J-groove. If both the members are beveled

or J-grooved when they're brought together, they are

shaped like a V or U and thus have these grooves

Referred to on a butt joint—namely, a V-groove or a. In form of

U-groove butt joint. This weld applies to both plate

and pipe. Figure 4-4 shows the different parts of the groove

weld

V-groove 

•  Plug welds These welds, which are like slots

Used to fill slotted or circular holes in welds, laps

In addition,  If the hole, or slot, is larger, a fillet weld can be made around the facing surface of the joint. lot weld, plug weld,

And an example of a hole with a fillet weld in it. Plug The weld may or may not completely fill the joint as shown.

weld size and strength

weld size

When the design engineer determines the load-bearing

the capacity of the welded joint, he shall specify it

on the drawing. This is done through the use of welding

Symbols that will be covered in Chapter 30.

Groove welds A groove weld is measured and shaped by

Its depth of penetration/fusion at the joint. this size

Does not include facial or root reinforcement

Weld. Groove welds are generally referred to as partial joint penetration (PJP) welds or complete mutual penetration (CJP) welds. If a groove is not in the weld symbol

size reference, then it should be considered as CJP

Weld If the design engineer wants to get the PJP weld done,

So it will be designated on the welding symbol.

the preparation of a CJP slot at the end

of a pipe. the CJP V-groove butt joint.

The fusion words are applied to the groove.

Weld. The weld interface is the line separating the welds

Hajj. Note again that the firmness on the face or

The root is not counted as part of the weld size.

Seal welds on multiple structures, the strength of the joint

Its rivet construction can be obtained. However, to

The width of the groove weld should not exceed

an inch more than the width of the face of the conduit. it

Allows the maximum amount of fusion beyond the groove

Face 1⁄8 inches on each side of the joint. metal deposits

Face beyond the groove is a waste of time and filler metal.

This also adds to the overall heat input and increases the resulting residual stress. Adds extra deposit cost

joint and reduces its strength.

CJP welds are typically designed to hold a maximum

Physical characteristics of the base metal. That CJP Weld

Those that meet code requirements, such as a butt joint in piping, must have better physical properties than those used in

Make sure joints won't leak or allow moisture in

In the joint, the entire length of the continuous weld is run

Sealing of joints. Ye weld It is called a seal weld. There are usually single-pass welds

deposited with the root Combined,  they must Be healthy, but they are not expected to lift heavy loads. Many welders believe that high reinforcement increases the strength of the welded joints. it is not true.

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