Welding

Welding:

The process of joining two similar or dissimilar, metals or non-metals, with or without the application of heat, with or without adding a filler material is known as welding. The welding process can be divided into three types.

  1. Fusion welding: It is a process of joining two pieces of metals by application of heat. The two pieces to be weld are placed together, heated mostly with the addition of some filler material, brought to the melting temperature and solidify on cooling. Various solid phase welding processes are

(a). Oxy-acetylene welding

(b). Shield metal arc welding

(c). Submerged arc welding

(d). Gas tungsten arc welding

(e). Gas metal arc welding

(f). Electro slag welding

(g). Plasma arc welding

(h). Electron beam welding

(i). Laser beam welding

2. Solid phase welding: The two metals to be brought into contact to produce a metallic bond with or without the application of heat, but apply pressure for the plastic flow of the metals.

3. Plastic welding: It is a process in which two metals to be joined is heated to the plastic state and external pressure is applied without the addition of filler material. Forge welding, resistance welding and Thermit welding with pressure are the examples of the plastic welding.

There are mainly five types of welding joints.

(a). Butt joint  (b). Lap joint  (c). T-joint  (d). Corner joint  (e). Edge joint

Random Posts

  • Strain

    Strain: When we apply a force on a body it will undergo deformation and its length will increase or decrease. […]

  • Machine

    Machine: It is a combination of mechanisms which receives energy and uses it for doing some useful work. The machine […]

  • Zeroth law of thermodynamics

    Zeroth law of thermodynamics: It states that when two systems have equality of temperature to a third system, they in […]

  • Thermodynamic Systems

    Thermodynamic Systems: Thermodynamic System: It is that part of the universe which is under consideration. There are following types of thermodynamics […]