There are many different types of welding process in the welding history. The term
welding, whose origin is identical with that of the word well in the sense of welling
or boiling up. In the previous time known to have been familiar to some extent with
the blowpipe or flame torch, but there was no record of their having ever applied
it to the joining of metal by fusion process. The water-gas welding process was applied
in the end of 19th century. The flame which is produced from water-gas replaced the
blacksmith s hearth as a mean of heating the metal and welded the metal but this
is first welding. Another type of weldingis the more modern types the termed cast-welding.
In this method the molten metal pouring into a mould which has runner at the point
where the casting had failed to flow or wherever there was a fractured place. The
molten iron poured in until it was fluid everywhere around the edge of the job and
runner was stopped up, then the iron was allowed to cold in the mould. This welding
process can be said modern fusion weldprocess, but this is slightly high cost process
than other types of welding.
At that time the oxy-acetylene weldingprocess discovering was the most vital importance
invention in the weldinghistory. That awardable invention gone to Mr. Edmund Davy
in 1836. This type of welding discovery was known to chemists a long time before
it became a factor of economic importance to the world.
Willson and Moisson had developed a method of making calcium carbide(CaC2) in the
year of 1891. In 1895 a Frenchman had discovered the another type of weldingprocess
that equal parts of acetylene and oxygen burned together gave a higher temperature.
Another welding had been happening in 1881 by Mr. de Meritens. During his experimental
works he faced with the necessity of joining together certain parts of electrical
storage batteries. He placed the work-piece on a table and it connected with the
positive pole of the source of current , the other pole connected a carbon rod which
has kept on operator hand. Then he strike on the work, at that time first produced
a arc and some heat was generated. Finally he made a fused the metallic lead of battery
plate. The first job lead container which was used for some chemical container was
produced with this type of arc welding process.
Elihu Thomson had made first electric welding machine patent in the year of 1886,
which was big type of welding machine. His process was usually called butt-joint
welding. He had also modify the other weldingsystem later because the jaw which
was used for griping the job the piece got too much hot. So he developed water cooled
Short history of welding
There are various types of welding process described in this page. Just follow these
and learn it wisely.
The terms weldingis define the joining of two or more surface (usually metals,
but not always) under the influence of heat, so the product shall be nearly homogeneous
union as possible. This is the main definition of welding.
What is Welding?
Technical Background of Welding:
In all welding joint processes heat is applied to or produced at the joint and heated
surfaces are brought into close contact, as result the joint surfaces to grow together
into single body.
Now we will see what happen during this growing up together process. It is we all
known that the matter is made of molecules which in turn into atom. The atoms of
molecules are become active when the temperature of material reaches absolute zero
(-2730C). At that time the molecules are moves with vibratory motion. In the higher
temperature the vibratory motions of atoms is greater. During weldingtemperature
it is sufficient to allow the atoms to make a bridge for the closely contacting surfaces.
Thus there is an exchange of atoms among the molecules of the surfaces to be joined.
Through this exchange of molecules of one surface interlock with adjacent other surface
and this process we get weld joint.