Becoming proficient at how to use an electric welder
may seem like a very difficult task. Fortunately it is actually a
simple process if you follow these crucial tips you will be well on
your way to welding like a pro. Simply learn these welding methods and
make sure to always practice on steel that is not important and
learning how to weld will become a simple lesson
When Arc
Welding, the short circuit struck in the space between the electrode
and the arc center erupts into such large amount of energy and heat
that it melts both the fuel rod and the base metal. When the liquid
metal pool loses its heat, it binds the weld.
To consistently
achieve good weld joints, it is important to be sure you are using an
appropriate size welder, choose the right size arc welding electrodes,
clean the workpiece adequately, and utilize skill which can only be
realized through training and practice.
While wearing protective
clothing and holding the Electrode Clamp away from conducting surface,
insert correct electrode (welding rod) into Electrode Clamp, at
convenient angle.
To begin welding, most importantly obey all
safety precautions, then attach the Ground Clamp to the metal to be
welded in such a way as to provide good electrical conductivity between
the workpiece and the ground wire. Adjust the number of amps to the
correct setting.
Drag the welding electrode along the workpiece in a fashion
similar to striking a match. Do not "tap" the electrode on the
workpiece as that may cause damage to the electrode by dislodging flux.
As
soon as the arc is established, hold the electrode at a 30° angle to
the workpiece. While laying your bead, keep the arc lit by holding the
electrode away from the workpiece a distance equal to the electrode's
diameter. Proceed at a smooth, even speed.
Experienced welders
often use a "weaving" pattern. This is a smooth oscillating movement of
the electrode during the weld process to evenly disperse the weld
puddle throughout the joint. This also results in a repetitive
wave-like pattern on the surface of the weld.
As you progress,
periodically use a "Slag Hammer" and "Scratch Brush" to get rid off
flux and slag deposits on the bead before the the metal has cooled
completely. This is important to inclusions and pitting in the weld.
Practice
until you can lay an even weld bead that fully penetrates the
workpiece, and is completely filled with the pooled welding material.
Avoid leaving gaps, undercuts, cavities or excess material overflowing
from the joint..
Always be aware of the Heat Affected Zone (HAZ)
of your workpiece. The welding process heats the base material, and may
seriously weaken its tensile strength or state of heat-treatment.
Expert welders apply only the amount of heat needed to leave a strong
weld by moving smoothly along the weld joint, using the correct
setting, and applying the electrode efficiently.
Proper welds depend on the action of an correct flux. Do not use welding rods which have gotten wet.
Never
contaminate the joint by using oily slag hammers or scratch brushes. It
is also important to remember that a scratch brush previously used on a
steel weld can often lead to rust contamination if used on stainless
steel weld.
Jeff
Bowerman, the author, runs a welding site which is home to an extensive
library of welding videos, welding articles and our highly rated welding handbook. An easy to understand place for beginners to learn how to arc weld. Need a welder? Come to The Welder Shop for Cheap Welders.