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PowerPoint ® Presentation Chapter 4 Welding Symbols Weld Specification on Prints Weld Joints Weld Types Welding Symbols Edge Preparation Brazing Symbols.

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Presentation on theme: "PowerPoint ® Presentation Chapter 4 Welding Symbols Weld Specification on Prints Weld Joints Weld Types Welding Symbols Edge Preparation Brazing Symbols."— Presentation transcript:

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2 PowerPoint ® Presentation Chapter 4 Welding Symbols Weld Specification on Prints Weld Joints Weld Types Welding Symbols Edge Preparation Brazing Symbols Nondestructive Examination (NDE) Symbols

3 Chapter 4 — Welding Symbols Object dimensions and welding symbols on a print convey fabrication information to the welder.

4 Chapter 4 — Welding Symbols A weld is specified with a welding symbol and is completed by the welder using the specified process.

5 Chapter 4 — Welding Symbols The five basic weld joints are the butt, lap, T, edge, and corner weld joints.

6 Chapter 4 — Welding Symbols Weld types are classified by the cross-sectional shape of the weld.

7 Chapter 4 — Welding Symbols Groove welds are classified by the edge shape of the joint members.

8 Chapter 4 — Welding Symbols Fillet welds are triangular in cross-sectional shape. They transfer loads to joint members positioned at 90° to one another.

9 Chapter 4 — Welding Symbols Plug and slot welds provide strength without affecting the edges of the joint members.

10 Chapter 4 — Welding Symbols Stud welds permanently join threaded fasteners to parts using heat and pressure.

11 Chapter 4 — Welding Symbols The size of spot and projection welds is the diameter of the weld nugget. The size of seam welds is the diameter of the weld nugget and length of the weld.

12 Chapter 4 — Welding Symbols Back welds are deposited on the opposite side of the part after the groove weld is made. Backing welds are deposited on the opposite side of the part before the groove weld is made.

13 Chapter 4 — Welding Symbols Surfacing welds are commonly used to build up worn parts.

14 Chapter 4 — Welding Symbols Edge welds are commonly used on thin materials where filler metal is not required.

15 Chapter 4 — Welding Symbols Welding symbols provide standardized information regarding welding and examination requirements.

16 Chapter 4 — Welding Symbols The arrow of the welding symbol points to the location of the weld specified.

17 Chapter 4 — Welding Symbols The reference line divides the welding symbol into the arrow side and the other side.

18 Chapter 4 — Welding Symbols Weld symbols on the welding symbol indicate the type of weld required.

19 Chapter 4 — Welding Symbols Dimensions included in the welding symbol specify weld size and location requirements.

20 Chapter 4 — Welding Symbols Information in the tail of the welding symbol pertains to weld specification, weld process, or other reference.

21 Chapter 4 — Welding Symbols Supplementary symbols provide additional information regarding the weld required.

22 Chapter 4 — Welding Symbols The arrow of the welding symbol is broken if a specific joint member requires edge preparation. If either joint member can be prepared, the arrow is not broken.

23 Chapter 4 — Welding Symbols Brazing symbols show the brazing process designation in the tail.

24 Chapter 4 — Welding Symbols Nondestructive examination (NDE) symbols can be part of a welding symbol or a separate NDE symbol.


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