Module 16 welding symbols Flashcards
The purpose of welding symbols is to
A) make the drafting job complete
B) convey necessary, welding information from designer to welder
C) specify the type of weld to use
D) convey necessary, weld dimensions
B) convey necessary, welding information from designer to welder
Define weld symbol
A pic graph that indicates the desired type of weld
List four types of welds included in the basic weld symbols
Surfacing
Fillet
Plug or slot
Groove
Define welding symbol
A welding symbol is an assembled symbol that combines multiple welded symbols into one. Giving all the information necessary for preparing and or welding the joint.
List eight elements of a welding symbol
Reference line
Arrow line
Basic weld symbols
Dimensions and other data
Supplementary symbols
Finish symbols
Tail
Specifications process or other references
Briefly describe and explain those supplementary welding symbols for each of the following
A) weld all around
B) field weld
C) contour and finish
D) Melt through
A) a joint that requires welding all around one side or both sides of shown is designated by an open circle where one arrow line joins the reference line
B) fields are indicated by a solid black flag, pointing to the weld symbol located where the airline joins the reference line
C) a contour symbol is used to indicate the desired shape of the weld surface as concave, flat or convex. It may be accompanied by a letter (M, C or G for machined, chipped or ground) to indicate how the shape is attained.
D) a solid semi circle opposite a groove weld symbol indicates that penetration through the thickness of the material is required. This weld is done from the same side as the groove weld.
Of the eight elements of a welding symbol, which two must always appear
A reference line
Arrow line
Briefly explain the following terms
A) arrow side
B) other side
C) both sides
A) the arrow side of the welding symbol refers to the bottom of the reference line closest to the reader when reading the drawing. It refers to welding done on the side of the weld joint to where the airline points.
B) The other side of the welding symbol refers to the top side of the reference line farthest from the reader. It refers to the welding done on the side of the weld joint opposite to where the airline points.
C) with the exception of the melt through symbol, weld symbols the appear on both sides of the reference line mean that the welding is done on both sides of the weld joint
What is the purpose of a broken arrow line?
A broken airline is used with bevel groove, and J groove weld symbols to indicate which side of the joint requires the preparation. The break is preferred, but maybe ignored if the joint design makes it obvious which side needs preparation.
The tail on a welding symbol is used for
A) determining arrow side or other side
B) joints using fillet we only
C) information that cannot be put into symbol form
D) indicating which side of the joint must be prepared
C) information that cannot be put into symbol form
List three weld symbols that have one leg perpendicular to the reference line
Fillet weld symbol
Bevel groove weld symbol
J groove weld symbol
In a correctly, drawn, welding symbol the reference line must
A) have a single arrow only
B) be drawn horizontally
C) be drawn with a tail
D) have all weld symbols on the arrow side
B) be drawn horizontally
A field weld is shown on the welding symbol by a
A) solid black circle
B) notation in the tail
C) ring around the weld symbol
D) solid black flag
D) solid black flag
A surfacing weld symbol is always drawn on the ________ side of the reference line
A) arrow
B) other
C) right
D) left
A) arrow
A weld symbol must’ve picked the
A) three most essential elements of the weld
B) desired shape of the weld to be applied
C) joint dimensions and welding process
D) member that is to be prepared and where it is welded
B) desired shape of the weld to be applied
