Symbols and conventions used in welding documentation: Difference between revisions
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==Welding process designation== |
==Welding process designation== |
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While,representation of welding symbol it is necessary to have some abbreviations for simplicity and to avoid lengthy notes. Welding process designation as follows: {{attribution needed}} |
While,representation of welding symbol it is necessary to have some abbreviations for simplicity and to avoid lengthy notes. Welding process designation as follows: {{attribution needed|date=October 2011}} |
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Revision as of 11:56, 9 October 2011
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The symbols and conventions used in welding documentation are specified in national and international standards such as ISO 2553 Welded, brazed and soldered joints -- Symbolic representation on drawings and ISO 4063 Welding and allied processes -- Nomenclature of processes and reference numbers.
Welding is the process of joining similar or dissimilar metals by the application of heat and sometimes pressure. Many techniques and methods are used general and specific purposes. Different types of joint include the square butt joint, single V preparation joint, lap joint and T-joint.
These different types of welded joint are represented by symbols which are similar to the shape of welds. These symbols are categorised as elementary, supplementary or combinations of these. The supplementary symbols are used with elementary symbols to show the finishing of the weld joint such as the degree of flatness, convexity or concavity.
Conventional Signs
According to the Bureau of Indian Standards, the welding around the joint is represented by using a circle at the elbow (connecting corner of the arrow and reference line).[citation needed] The ISO convention indicates the process of welding used in a 90°V formed at the tail end of the arrow where the name of process is written.
Welding process designation
 | This article may lack focus or may be about more than one topic. (October 2011) |
While,representation of welding symbol it is necessary to have some abbreviations for simplicity and to avoid lengthy notes. Welding process designation as follows: [attribution needed]
| Designation | Welding process |
|---|---|
| CAW | Carbon arc welding |
| IB | Induction Brazing |
| CW | Cold welding |
| IRB | Infra red brazing |
| DB | Dip brazing |
| OAW | Oxy-acetylene welding |
| DFW | Diffusion welding |
| OHW | Oxy-hydrogen welding |
| EBW | Electron beam welding |
| PGW | Pressure gas welding |
| ESW | Electro-slag welding |
| RB | Resistance welding |
| EXW | Explosion welding |
| RPW | Projection welding |
| FB | Furnace welding |
| RSEW | Resistance seam welding |
| FOW | Forge welding |
| RSW | Resistance spot welding |
| FRW | Friction welding |
| RW | Resistance welding |
| FW | Flash welding |
| SAW | Submerged arc welding |
| GMAW | Gas metal arc welding |
| TB | Torch welding |
| GTAW | Gas tungsten arc welding |
| UW | Upset welding |
References
- K.L.Narayana,P.Kannaiah,K.Venkata Reddy (2008). Machine Drawing. New age International. ISBN 978-81-224-1917-7.
{{cite book}}: CS1 maint: multiple names: authors list (link) - N.D.Bhatt,V.M.Panchal (2003). Machine Drawing. Charotar Publishing House. ISBN 81-85594-19-8.