Welding Representation
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Transcript of Welding Representation
![Page 1: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/1.jpg)
Welding Representation
Chapter 22
![Page 2: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/2.jpg)
2Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Objectives
• Describe the various welding processes
• Draw the common welding symbols
• Dimension a welding drawing using standard ANSI welding notations
![Page 3: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/3.jpg)
3Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Objectives (cont.)
• Identify and draw a fillet weld, groove weld, back weld, spot weld, seam weld, projection weld, and flash weld
• Describe the use of welding symbols in CAD drawings
![Page 4: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/4.jpg)
4Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Welding Processes
• The principal methods of welding are:• Gas welding• Arc welding• Resistance welding
![Page 5: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/5.jpg)
5Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Standard Symbols
• Welding drawings are a special type of assembly drawing as weldments are composed of a number of separate pieces fastened together as a unit
• Joints are all shown as they would appear before welding
![Page 6: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/6.jpg)
6Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Weldment Drawing
![Page 7: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/7.jpg)
7Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Welding Symbols
• The items that can be specified in a welding symbol are:• Type of weld• Process• Depth of bevel, size or strength for
some weld types• Groove weld size• Finishing designator• Contour
![Page 8: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/8.jpg)
8Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Welding Symbols
• Cont.• Groove angle• Root opening• Length of weld• Number and pitch of welds• Whether the weld is to be field welded• All around indicator• Which side of the material is to be
welded
![Page 9: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/9.jpg)
9Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Basic Welds and Symbols
![Page 10: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/10.jpg)
10Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Types of Welded Joints
• There are five basic types of welded joints:• Butt joint• Corner joint• T-joint• Lap joint• Edge joint
![Page 11: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/11.jpg)
11Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Types of Welded Joints
![Page 12: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/12.jpg)
12Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Types of Welds
• There are four types of arc and gas welds:• Back or backing weld• Fillet weld• Plug or slot weld• Groove weld
![Page 13: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/13.jpg)
13Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Types of Welds
• The four basic resistance welds are:• Spot weld• Projection weld• Seam weld• Flash or upset weld
![Page 14: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/14.jpg)
14Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Welding Symbols
• The basic element of the symbol is the “bent” arrow• The arrow points to the joint where
the weld is to be made• Attached to the reference line, or
shank, is the symbol for the desired weld
![Page 15: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/15.jpg)
15Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Welding Symbols
![Page 16: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/16.jpg)
16Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Complete Welding Symbol
![Page 17: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/17.jpg)
17Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Fillet Welds
• The usual fillet weld has equal legs
![Page 18: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/18.jpg)
18Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Groove Welds
![Page 19: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/19.jpg)
19Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Back or Backing Welds
![Page 20: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/20.jpg)
20Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Surface Welds
• The surface weld symbol indicates a surface to be built up
![Page 21: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/21.jpg)
21Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Plug and Slot Welds
![Page 22: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/22.jpg)
22Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Spot Welds
![Page 23: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/23.jpg)
23Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Seam Welds
![Page 24: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/24.jpg)
24Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Projection Welds
![Page 25: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/25.jpg)
25Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Flash and Upset Welds
• Flash and upset weld symbols have no arrow-side or other-side significance
![Page 26: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/26.jpg)
26Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Welding Applications
• Welding is often cheaper when only one or a few identical parts are required
• Welding is also suitable for large structures that are difficult or impossible to fabricate entirely in a shop
![Page 27: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/27.jpg)
27Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Welding Templates
• Welding templates can simplify drawing welding symbols by hand
• They have all the forms needed for drawing the arrow, weld symbols, and supplementary symbols
![Page 28: Welding Representation](https://reader033.fdocuments.us/reader033/viewer/2022042822/56812e5d550346895d940442/html5/thumbnails/28.jpg)
28Technical Drawing 13th EditionGiesecke, Mitchell, Spencer, Hill Dygdon, Novak, Lockhart
© 2009 Pearson Education, Upper Saddle River, NJ 07458.
All Rights Reserved.
Computer Graphics
• Welding symbol libraries available in CAD and allow for rapid application of accurate, uniform symbols that are in compliance with standards