Transcript Unit 15 - Goodheart

Fillet Welds
UNIT 15
Objectives
• Name the parts of a fillet weld.
• Determine weld size and weld length by
interpreting the fillet welding symbol.
• Read and interpret a fillet welding symbol
used for intermittent and staggered
intermittent welds.
• Determine the weld face contour of a
fillet weld.
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Permission granted to reproduce for educational use only.
Fillet Weld
• Approximately triangular
• Actual throat
– Shortest distance between weld root and face of
weld
– Affects strength of weld
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Permission granted to reproduce for educational use only.
Parts of a Fillet Weld
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Permission granted to reproduce for educational use only.
Dimensions for Fillet Symbol
• Dimension for arrow side fillet on arrow side of
reference line
• Weld size
– Shown to left of weld symbol
– Specified dimension is minimum size unless
otherwise noted
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Permission granted to reproduce for educational use only.
Fillet Weld with Unequal Legs
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Permission granted to reproduce for educational use only.
Weld Length
• Shown to right of weld symbol
• Weld-all-around symbol
– For all geometric shapes
• Round parts
– Length may be given in degrees
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Permission granted to reproduce for educational use only.
Weld Length Given in Degrees
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Permission granted to reproduce for educational use only.
Hatching
• Shows extent and location of fillet weld
• Additional arrows used for abrupt changes in
weld direction
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Permission granted to reproduce for educational use only.
Intermittent Fillet Welds
• Intermittent weld
– Broken by unwelded spaces
• Pitch
– Distance between centers of increments on one
side of joint
– Shown to right of length dimension
• Staggered intermittent weld
– Weld increments staggered on both sides of joint
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Permission granted to reproduce for educational use only.
Intermittent Fillet Weld with Symbol
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Permission granted to reproduce for educational use only.
Staggered Intermittent Fillet Weld with
Symbol
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Permission granted to reproduce for educational use only.
Fillet Welds in Holes or Slots
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Permission granted to reproduce for educational use only.
Fillet Weld Contours
• Specified when specific welded shape is desired
– Flat
– Concave
– Convex
• Indicated by contour symbol
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Permission granted to reproduce for educational use only.
Combination Weld Symbols
• Other types of welds can be used with fillet
welds
• Fillet symbol and other weld symbol included on
welding symbol
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Permission granted to reproduce for educational use only.
Example of Combination Weld Symbol
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Permission granted to reproduce for educational use only.