Table of Contents
- 1 How do you read a plug weld symbol?
- 2 What goes to the left of the welding symbol?
- 3 What goes to the right of the welding symbol?
- 4 What is a plug or slot weld?
- 5 Under what circumstances do we use slot weld and plug weld?
- 6 Are plug welds strong?
- 7 Where is the hole in a plug Weld?
- 8 What is the pitch of a plug Weld?
How do you read a plug weld symbol?
The plug weld symbol is a rectangle with a diameter symbol placed to the left of the symbol as well as the number associated with that diameter. Some drawings will not indicate the hole in the print so the use of dimensions come in to play when locating where a plug weld will be executed.
What goes to the left of the welding symbol?
The number to the left indicates the width of the weld (or diameter) while the number on the right indicates the length. In the case of symbol 2 above, the number to the right will give you the length of the increment first (which is 2), then the pitch (distance between centers of increments), which in this case is 5.
What is a plug weld?
A weld made in a circular hole in one member of a joint fusing that member to another member. A fillet-welded hole is not to be construed as conforming to this definition.
When specifying a plug or slot weld if the depth of filling is required where is the dimension placed in relation to the weld symbol?
Slot Weld Dimensions Dimensions of slot welds must be shown on the same side of the reference line as the weld symbol (fig. 3-37).
What goes to the right of the welding symbol?
length of
The length of the weld is given to the right of the symbol. If no length is given, then the weld is to be placed between specified dimension lines (if given) or between those points where an abrupt change in the weld direction would occur (like at the end of the plates in the example above).
What is a plug or slot weld?
A plug weld joins the surface of a piece of material to another piece through a hole. The hole can be partially or completely filled with the weld material.
What dimensions can be given for a plug weld?
Dimensions that may be applied to the plug weld symbol include size, depth of filling, included angle of countersink, number of welds and their spacing (pitch).
How far apart should plug welds be?
The minimum center to center spacing for plug welds shall be 4 times the diameter of the hole. The minimum center to center of slot welds (traverse direction (this way II) shall be 4 times the width of the slot. Longitudinal direction (–) shall be 2 times the length of the slot.
Under what circumstances do we use slot weld and plug weld?
Plug welds and slot welds are used to join overlapping members, one of which has holes (round for plug welds, elongated for slot welds) in it. Weld metal is deposited in the holes and penetrates and fuses with the base metal of the two members to form the joint.
Are plug welds strong?
Plug welding is an alternative to spot welding used by vehicle manufacturers where there is insufficient access for a spot welder. Plug welds when done properly tend to be stronger than the original spot welds.
Which of the following weld Dimensions is located to the left of the weld symbol of a groove weld?
parenthesis
The size of weld will be shown to the left of the groove symbol in parenthesis. If there is no number in parenthesis then the size of the weld should not be less than the groove depth. Welding symbol showing both groove depth and weld size. 7.
What are the dimensions of the plug Weld symbol?
Dimensions that may be applied to the plug weld symbol include size, depth of filling, included angle of countersink, number of welds and their spacing (pitch). Nice work! You just studied 98 terms! Now up your study game with Learn mode.
Where is the hole in a plug Weld?
When the weld symbol for plug or slot weld is located below the reference line, the hole is in the arrow side member of the joint. Dimensions that may be applied to the plug weld symbol include size, depth of filling, included angle of countersink, number of welds and their spacing (pitch).
What is the pitch of a plug Weld?
The pitch (center-to-center spacing) of plug welds shall be shown to the right of the weld symbol. Depth of filling of plug and slot welds shall be completed unless otherwise indicated.
Where do you put the weld symbol on a welding joint?
Holes or slots in the arrow side member of a joint for plug or slot welding must be indicated by placing the weld symbol on the side of the reference line toward the reader (A, fig. 3-11).
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