Introduction to Welding – geeksforjobs


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Welding is a permanent joining process. It can be joined in different ways.

They are:

1. Women joining

2. Semi-permanent joining

3. Permanent joining

Temporary joining process

In the process of temporary joining, the assembly and disassembly of solid structures occur. In this process, there will be no damage to the base metal. Metal can be reclaimed using a variety of techniques.

EX: severed joints

Temporary joining process

Semi-permanent joining process

It is a process of joining that is to be permanent. It is used in joining nuts and bolts and washers by knock-down fittings. It can be dismantled without any damage to the original material.

Ex: Revvet Joints

Welding is a process of joining two or more components with or without filter metal, with or under pressure. Inserted metals are known as basic materials. The material that is used to join the original material is called “filler” or “consumable”. Depending on their structure. Unavailable or filler material is selected. Most filler materials should have the same structure as the original material. The welded joint is called “weldment”.

Types of weld joints

Butt joint

The butt joint is made by joining the edges or ends of two parts together. Both these parts are in the same floor or side-by-side. These butt joints are of different types.

They are:

1. butt butt weld

2. Belt Groove Weld

3.V-groove weld

4.J-groove weld

5. U-groove weld

6. Fair-V-Groove Weld

7. Fair-bevel-groove butt weld

Corner Joint

The corner joint is made by placing the corner of two parts at right angles which is called corner joint. The two parts that are welded with the corner joint form shape of the L are of different types.

They are:

1.Fillet Joint

2. Combined

3. compress-groove weld or butt weld

4.V-groove weld

5. Bell-groove weld

6. U-groove weld

7.J-groove weld

8. Fair-V-Groove Weld

9.Edge Weld


T joint

The T-joint is made by connecting two parts at right angles to the other. This is called T-joint. There are also different types of joint.

They are:

1. Toilet Weld

2. Plot Weld

3. Bell-groove weld

4.J-groove weld

5. Fair-bevel groove weld

6. Weld through melt

lap joint

The lap joint is formed when the two parts are placed on top of each other and then welded. It can be one-way or two-sided. This type of joint is mostly used to connect two pieces with different thicknesses. It is of different types of L-joint.

They are:

1. foil weld

2. bell-groove weld

3.J-groove weld

4. Slug Weld

5. Shlot Weld

6. Spot Weld

7. Fair-bevel-groove weld

Edge welding

The joint is formed by welding the edges of two parts together. This joint is used where the two sheet sides are adjacent and nearly parallel planes at the point of welding. In this insert, the weld does not fully penetrate the thickness of the joint. So it cannot be used in tension or pressure applications. This edge joint weld is classified into various types.

They are:

1. compress-groove weld

2. bell-groove weld

3.V-groove weld

4.J-groove weld

5. U-groove weld

6.Edge-Flange Weld

7. Corner-Flange Weld

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