Transcript Welding

Design for Welding
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Preferred Welding Design
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Types of Joints
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Weldability of Metals and Alloys
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Boss Attachments
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Corner Joints
Consider overlap and joint penetration
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Size of Weld Determined
By Thinner Member
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Comparison of Fillet and
Groove Welds
Double-bevel groove weld has about one-half the weld
area but requires extra preparation.
Single-bevel groove weld requires about the same amount
of weld along with joint prep
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Single-Bevel vs Fillet
In the flat position, a single-groove joint is less
expensive than two fillet welds.
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Location Significance
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Fillet Welds for Shaft Support
Consider
symmetry
about an axis
when
placing weld
symbols
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
All-Around Symbol
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Unequal Legs
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Length of Fillet Weld
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Center-to-Center Spacing
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Intermittent Fillet Welds
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Welded Steel Shaft Support
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Fillet Weld Sizes
Rule-of-thumb
fillet-weld sizes
where the
strength of the
weld metal
matches the
plate.
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
What size fillet weld is required?
What size fillet weld is required to match the
strength of the fabricated design shown?
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
What size fillet weld is required?
What size fillet weld is required to hold the rib to
the plate shown? Weld design is for rigidity only,
and only 33% of full-strength weld is required?
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I
Surface Buildup
Randy Emert
Assistant Professor
Mechanical Engineering Technology
EDG 1211 Engineering Graphics I