How A Mig Welder Works
One of the most common welders is the MIG welder. These welders work by feeding an electrode wire through a welding gun with a continuous flow of inert gas, called the shield gas.
The most common shield gas used is carbon dioxide. It is the cheapest welding gas and it also makes a good weld. Argon and carbon dioxide are sometimes mixed together to create a weld with less spatter, which gives a cleaner weld.
The GMAW process has a number of advantages over the more common welding processes. The welding gun is equipped with a trigger which is connected to the electrode. This allows you to position the electrode properly first, before you pull the trigger, creating the welding arc.
You can adjust the voltage, amperes and speed of feeding the wire With a MIG welder. The tension on the welding wire can also be varied and it also has a valve to control the flow of gas.
You can also use a welder without shielding gas. This requires a flux core wire, which is a hollow welding wire filled with flux. This process is called Flux Cored Arc Welding, or FCAW. Most welders have the option of switching the polarity of the arc, which is used for flux cored wire.
MIG welders can be used to weld a variety of metals, including aluminum, tin, copper, zinc, brass and steel. There are dozens of compositions of welding wires to choose from, for all types of situations. For a beginner, the MIG welder is the ideal choice, as it can weld many types of metal, is versatile and easy to use.
Shop here for top brand name cordless power saws:
Post Footer automatically generated by Add Post Footer Plugin for wordpress.
Tags: Home Improvement, shopping, tools
April 22 2009 04:07 am | Home Improvement