Thursday, January 7, 2010

Guide to Weld Aluminum

Las professional actually involves skill & experience. A wide knowledge necessary to become an expert. Many years of exposure & the skills needed to master the art of welding. After understanding the basics, one can learn more complex skills.

The first and foremost, we must take precautions. If not, an unexpected situation proved even failure. Damage to the eye is a possibility because of the strong rays of light that comes from the action. Like electricity involved in certain cases welding, death by electricity is a possibility. Before you begin welding helmet should be worn to protect the eyes, hair, head & face. Wear gloves and protective gear is a must.

Arc Welding:

Arc welding is most common technique used. This is the first lesson for welding. Instead of using gas torches, high voltage electricity is used. In arc welding, a spark / arc can melt the weld metal & formed. This process is accepted by many as a more accurate & make clean & strong weld. In the category of arc welding, seven different methods are there to choose from.

Shielded metal arc welding may be the most suitable if you have a large or welding Welds metal with not-so-angle & normal position. In this method, the flow of electricity through the electrodes used to melt metal. MIG welding (metal inert gas welding) will be useful in projects that require welding speed. In this method, small bars should not be used. In return, the equipment must be used to pass current through the metal tip that does not melt. Separate pieces of wire continuously fed to the ends that make up the weld. Tungsten inert gas welding little like MIG welding. This applies in thin materials where a high quality weld is required speeds and to use. any where no other methods as well - Flux-cored arc welding, namely (FCAW), submerged arc welding (SAW), plasma welding, etc.

Aluminum Welding:

Aluminum is the most difficult alloys. At first, aluminum oxide must be cleaned from the surface. Heat treated aluminum alloy receive power from a process called aging. Prominent decrease in the strength yield will occur when welding aluminum because of over-aging. For all the other information on the aluminum welding process, please visit the homepage or any of the links connected to this.

Aluminum alloys can be divided into 9 groups.

Major alloying elements Designation

1xxx unalloyed (Pure)> 99% Al
2xxx Copper is the principle alloying element.
3xxx Manganese is the principle alloying elements.
4xxx Silicon is the principle alloying elements.
5xxx Magnesium is the principle alloying elements.
6xxx Magnesium & Silicon is the principle alloying elements.
7xxx Zinc is the principle alloying elements.
8xxx other elements (including Tin, a composition Lithium)
9xxx provided for use in future

Aluminum alloy is available in the market. We can get their products in various forms. Here are the factors that affect the welding aluminum.

* Aluminum Oxide coating.
* Thermal Conductivity.
* Thermal Expansion Coefficient.
* Melting characteristics.

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