The welding
process has been in existence for centuries and with time there has been a lot
of improvement the Jua kali sector with the introduction of welding equipment in Kenya. Gone are the days when the only form of welding was forge welding
whereby the blacksmiths would join iron and steel by heating and hammering.
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| Welding Equipment in Kenya |
Those were
tough days, the welding process has greatly evolved and things are now easier
due to different welding processes and welding equipment.
To add
welding process improved immensely with the introduction of various energy
sources such as electricity whereby you can use the electric arc, laser or even
the electron beam, there is also the use of a gas flame, friction as well as
ultrasound.
The fact
that welding can be done in different environments including under water and
outer space is a clear indication of how this industry has really grown unlike
in the past where by welding was only done on land.
How welding equipment in Kenya work
Different types of welding
require different types of welding equipment so as to perform the tasks of
welding well.
These include;
·
Stick
welding also known as shielded metal arc welding
This type of welding is done
manually and uses an electrode with a flux. The melting electrode is held by
the electrode holder as it melts away.
It is the most popular welding
process due to the simplicity of operation and equipment. It is mostly used in
industrial fabrication and construction of steel structures.
·
Gas tungsten arc welding
Also known as tungsten inert gas welding, it is a process
that uses tungsten electrode to weld .the weld area is protected by an inert
gas, argon. Sometimes a filter metal is used.
This type of welding is used to weld stainless steel and
other metals such as aluminium, copper and magnesium alloys. Compared to
shielded and gas metal arc welding, this type of welding gives the welder
control over the welding process allowing stronger welds.
·
Submerged arc welding
This type of welding utilizes a flat strip electrode. The
molten weld is protected a flux consisting of lime, silica, manganese oxide,
calcium fluoride and other compounds.
The process of welding is limited to flat welding positions
and constant voltage welding supplies are utilized.
·
Oxy-fuel welding
This is the
most common and oldest type of gas welding although it has become quite
unpopular in recent years.
Equipment
used in this type of welding are
inexpensive and simple .It is slower compared to the arc welding due to the
less concentrated flame used. Its main disadvantage is the fact that it can
lead to greater residue stress and distortion.
·
Spot welding
It is a
popular form of resistance welding used to join overlapping metal sheets. It
uses two electrodes that clamp the metal sheets together and pass a current.
It s
efficient energy use is one of its advantages together with the high
production rates. However,
it has low weld strength.
Features of welding equipment
1.
Welder TIG DC Inverter Handy 180
Features of
Welder TIG DC Inverter Handy 180 are GBT inverter DC arc weld device thawing
power, acid washing and bowdlerizing plastic sprayed surface, overheat and over
current protecting functions and a device that prevents electric shock.
2. Ac Arc Welder- portable 140 A
It is manufactured by a company called Hugong. Some of its
main features include overheating and overload protection, single phase AC
stick welder, light, fan cooled, dual voltage, step less current regulation, usable
electrode among other features.
As I have
discussed above those are the ways in which welding equipment in Kenya work as
well as the types of welding equipment found in Kenya.

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