Welding is a permanent joining process.Actually joining can be done in different types.
Temparary joining process
In the Temporary joining process, the assembly and disassembly of solid structures occur. In this process, no damage will occur for the base metal. The metal can be retrieved using different types of techniques.
Semi-permanent joining process
It is a process of joining which is to be permanent. It is used in joining by nuts and bolts and washers, knock-down fittings. It can be dismantled without any damage to the parent material.
Permanent joining proccess-Welding
Welding is a process of joining of two or more components with or without application of heat and pressure with or without application of filter metal. The joined metals are known as the parent material. The material which is used for the joining of parent material is called “filler” or “consumable”.Consumable or filler material are selected based on their composition. Mostly filler materials should have a similar composition to parent materials. The welded joint is called “weldment”.
Types of weld joints
The butt joint is made by joining the edges or ends of two parts together. These two parts lie in the same plane or side by side. These butt joints are different types.
1.Square butt weld
2.Bevel groove weld
7.Flare-bevel-groove butt weld
The corner joint is formed by placing the corner of two parts at the right angle is called the corner joint. Two parts that are going to be weld with corner joint form shape of L. The corner joint is different types.
3.Square-groove weld or butt weld
The T-joint is made by intersecting two parts at right angle of the other.It is called T-joint.T-joint is also different types.
5.Flare-bevel groove weld
The lap joint is made when two parts are placed one over the other and then welded. It may be one-sided or double-sided. This type of joint is used mostly to join two pieces with different thicknesses.This L-joint is of different types.
The joint is formed by welding the edges of two parts together. This joint is used where the edges of two sheets are adjacent and approximately parallel planes at the point of welding. In this join, the weld does not penetrate completely the thickness of the joint. So it can’t be used in stress or pressure applications. This edge joint weld is classified into different types.