TIG Welding

Welding is a process used to join metal parts by producing a coalescence, called a weld, at a joint. Advances in welding technology have opened the way for innovative designs in structures and machinery. Of modern welding processes, the greatest number fall under the general classifications of arc welding, gas welding and cutting, resistance welding, and brazing.

Tungsten Inert Gas (TIG) welding is one of the arc welding methods. This method is suitable for many kinds of metals, but especially for welding of stainless steels, aluminum and magnesium.

In stainless steel industry, TIG welding has an important role on joining thin sheets, tubes and pipes. Depending on this important role, the mechanical behaviours of TIG welded joints and criteria affecting these behaviours are the main cared subjects in industry to obtain products with less failure and use them for longer service times. Mechanical behaviours of TIG welded joints in stainless steels are also the main subject of the senior project which will be submitted at the end of this year.

The objective of this proposal is to give information on the plan of the project about the mechanical behaviours of TIG welded joints in stainless steels, regarding on the research facilities, equipments, materials and the methods that will be followed and used during the preparation of this project.

1. TIG Welding

TIG welding, which was developed in late 1920's and perfected in early 1940's, is a commonly used high quality welding process and has become a popular choice of welding processes when high quality, precision welding is required and nearly all metals can be welded by using this process. The main application areas of TIG welding can be mentioned as naval industry, i...

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Management plan of the project depending on the duration of activities can be also seen in the figure below.

Figure – This chart indicates the management plan of the project

5. CONCLUSION

Mechanical behaviours of TIG welded joints in metals show differences depending on the changes in parameters which are used during the welding process. Effects of these changes in welding parameters on stainless steels' mechanical behaviours will be examined and discussed as the subject of this senior project.

6. BIBLIOGRAPHY

1. John M. Gerken, Damian Kotecki - ‘'Stainless Steels – Properties, How to Weld Them , Where to Use Them'', 1990

2. Welding Handbook by American Welding Society, 1994

3. Eric Folkhard – ‘' Welding Metallurgy of Stainless Steels'', 1997

4. Prof. Dr. Selahaddin ANIK – ‘' Kaynak Teknikleri'', 1973

5. www.welding.com