Wednesday, November 19, 2014
Types of Engine Driven Welders
Engine driven welders are used where there is a lack of
electric power for arc welding, and are designed for outdoor applications. However,
they can be used indoors to supply necessary power to electric arc welders. The
nature of application, type of engine, portability and AC generator power are
some of the factors to consider when choosing an engine-driven welder.
A choice of gas
powered engines
There are different types of engine driven welders that
include gasoline, diesel, and LPG or liquid propane gas. Gasoline engines are
ideal in colder climates since they do start easily and do not need ether start
kits or other starting aids. Diesel engine driven welders are most popular
since they offer a better fuel economy when compared with gasoline engines.
They are widely used in refineries since they do not ignite as easily as
gasoline. LPG has become an alternative choice especially in indoor
applications where exhaust emissions from diesel and gasoline are not
permitted.
Choosing the right
wattage
When selecting an engine
driven welder, it is prudent to consider the need for portability. Smaller
gasoline stick welders are easier to be carried or lifted to a work area. Engine drives come with power generation
capabilities from 5000 to 27000 W. Choosing one depends on the tools used and
the need to simultaneously weld. Different tools require different wattage.
Grinders require 1800 W, air compressors a minimum of 8200 W, plasma arc
cutters up to 12000 W. Considering these factors will help choose the right
unit.
Safety Comes First For Welding Operators
There is no doubt that welding
operators often work under stressful conditions where safety is paramount.
While arc welding may be a safe occupation, it is essential to make sure that
safety measures aren’t overlooked. From electric shock, to exposure to arc
radiation, fumes and gases, there are several factors and mandatory practices
that must be strictly adhered to by the book. Welding involves voltages from as
low as 20 volts to as high as 100 volts while the voltage in welding equipment
ranges from 120 to over 550 volts. Therefore, it is essential for welding
operators never to touch electrodes and metal parts of the electrode holder
with bare hands. Proper insulation includes the use of dry gloves, keeping dry insulation
between their body and the metal being welded.
Fumes and gases can be hazardous
in case of overexposure. Fumes from welding contain toxic metal oxide
compounds, which is why welding operators must ensure that there is proper
ventilation depending on the type of rod and base metal used. Ventilation
systems such as exhaust fans and hoods are essential in the work area.
Operators must wear approved respirators to limit the exposure to toxic fumes.
Ventilation systems must be regularly checked to comply with specific standards
set by OSHA or other relevant authorities.
Welding operators have a choice
of personal equipment from fire resistant clothing, safety glasses, shoes,
helmets and more. Wool and cotton clothing specially treated with fire retardation
is recommended over synthetics. Paying attention to safety makes all the
difference when it comes to welding, an industry where welders and their skills
are in great demand.