Weld pool diagram
In
metalworking
Metalworking is the process of shaping and reshaping metals to create useful objects, parts, assemblies, and large scale structures. As a term it covers a wide and diverse range of processes, skills, and tools for producing objects on every scale ...
, weld pool commonly refers to the dime-sized workable portion of a
weld where the base metal has reached its
melting point
The melting point (or, rarely, liquefaction point) of a substance is the temperature at which it changes state from solid to liquid. At the melting point the solid and liquid phase exist in equilibrium. The melting point of a substance depends ...
and is ready to be infused with filler material. The weld pool is central to the success of the welding process. It was first observed in
oxy-fuel welding by
Fouché & Picard Fouché or Fouche may refer to:
*George Fouché, South African race car driver
* Guy Fouché (1921 – 1998), French operatic tenor
*Jacobus Johannes Fouché, former president of South Africa
* James Fouche (born 1998), New Zealand racing cyclist
...
in 1903, after the discovery of
acetylene
Acetylene ( systematic name: ethyne) is the chemical compound with the formula and structure . It is a hydrocarbon and the simplest alkyne. This colorless gas is widely used as a fuel and a chemical building block. It is unstable in its pur ...
by
Edmund Davy in 1836.
The weld pool must be carried along the joint in a consistent width and depth, and the motion used to carry the weld pool has a direct effect on the quality of the weld bead. A weld made by starting and carrying a weld pool, without the addition of a filler material, is called an autogenous weld.
References
{{Reflist
Welding
