Welding Equipments Blogs

Wednesday, March 17, 2010

Three Basic Welding Processes

STICK Welding
Shielded Metal Arc Welding (SMAW), also known as STICK Welding, is an arc welding process using a coated electrode typically applied manually. It produces a high quality weld and can be used on different types of metals of varying thicknesses with excellent uniformity. It has a wide range of applications in industry.

MIG Welding
Gas Metal Arc Welding (GMAW), also known as MIG Welding, is an arc welding process using a continuous feed filler wire and is used widely in the sheet metal industry as it is both fast and economical. A variation on this is Flux Core Arc Welding.

TIG Welding
Gas Tungsten Arc Welding (GTAW), also known as TIG, is an arc welding process using a nonconsumed tungsten electrode with filler wire fed manually. This process produces high quality welds, can be used on almost any metal and is used for more precise welding requirements.


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Thursday, March 4, 2010

TIG Welding Butt Joint

For light materials the square-edge butt joint is the easiest to prepare and can be welded without filler rod. It consists of “butting” two pieces of metal up against one another (no overlapping) and then welding along the seam between them. If the weld is to be made without filler rod, extreme care must be taken to avoid burning through the metal.

The single-V butt joint is preferable on material ranging in thickness from 3/8” to 1/2” in order to secure complete penetration. It is prepared like a regular butt joint except that the top edge of each piece is chamfered in order to reduced the area of contact between the two. The included angle of the V formed by the chamfering should be approximately 60° with a depth of about 1/8” to 1/4”.

The double-V butt joint is needed when the metal exceeds 1/2” thickness and the design is such that the weld can be made on both sides. This is like a single-V joint except that both the top and the bottom edges of the pieces are chamfered, and welding is performed on both sides. With a double V there is greater assurance that penetration will be complete.

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Friday, September 18, 2009

Welding Resources

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Saturday, June 6, 2009

An Introduction to TIG Welding

A tungsten electrode heats metal like steel, stainless steel, magnesium etc for welding purpose and Argon gas protects the weld puddle from airborne contaminants. Some of the benefits of TIG welding are: TIG welding produces high quality, clean welding on any metal. This welding generally uses non-consumable tungsten.

TIG Welding is used to weld steel, stainless steel, aluminum, nickel alloys, magnesium, gold etc. It also welds bike frames, lawn mowers, fenders and more. It does not create smoke or fumes. Before a person starts welding, it would be better if they clean the base metal properly. Aragon gas is used to for most of the TIG welding projects. TIG welding can be done in all positions-flat, horizontal, vertical or overhead. Because only the necessary amount of filler metal is added to the welding puddle, no spatter or sparks are produced.

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