Welding Symbols: Plug and Slot Welds
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Questions and Answers

Plug welds and slot welds are identified by the same symbol, except that the plug weld symbol has a diameter symbol placed on its right side.

False

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.

True

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).

True

The size of a plug weld is located to the right of the weld symbol, and is preceded by the diameter symbol.

<p>False</p> Signup and view all the answers

When a specific contour symbol is required, the appropriate contour symbol is shown above or below the weld symbol depending on its arrow side, or other side significance.

<p>True</p> Signup and view all the answers

A(n) ____ weld is identified by reference to a detail drawing in the tail of the welding symbol.

<p>slot</p> Signup and view all the answers

The difference between the plug and slot weld is in the ____ of the hole in which the weld metal is deposited to fuse the two members of the joint.

<p>shape</p> Signup and view all the answers

The plug weld is made through a(n) ____ hole.

<p>round</p> Signup and view all the answers

The slot weld is made through a(n) ____ hole.

<p>elongated</p> Signup and view all the answers

The ____ of a plug weld refers to its diameter in inches at the base of the weld.

<p>size</p> Signup and view all the answers

The ____ dimension of a slot weld is located to the left of the symbol.

<p>width</p> Signup and view all the answers

The number of welds is shown in ____ below an arrow side of the plug and slot weld symbols or may be specified in the tail of the welding symbol.

<p>parentheses</p> Signup and view all the answers

Plug and slot welds are generally finished with a ____ contour.

<p>flush or convex</p> Signup and view all the answers

If a method of postweld finish is also to be specified, it is placed ____ the contour symbol.

<p>above or below</p> Signup and view all the answers

The ____ drawing shows the member or members that will require joint preparation.

<p>section</p> Signup and view all the answers

Study Notes

Plug and Slot Welds Overview

  • Plug and slot welds share a symbol, but plug welds include a diameter symbol on their right side.
  • Plug welds are indicated by holes in the material, while slot welds have elongated holes.

Symbol Placement and Dimensions

  • Weld symbols below the reference line indicate that the hole is on the arrow side of the joint.
  • Key dimensions for plug weld symbols include size, depth of fill, angle of countersink, number of welds, and spacing (pitch).
  • The size of a plug weld is noted to the right of the weld symbol, following the diameter symbol.

Contour and Tail Specifications

  • Contour symbols, when necessary, are positioned above or below the weld symbol, indicating their relevance to the arrow side.
  • Slot welds reference a detail drawing in the tail of the welding symbol.

Differences in Hole Shape

  • Plug welds utilize round holes for metal deposition.
  • Slot welds are formed through elongated holes.

Size and Width Details

  • The size of a plug weld refers to its diameter at the base, stated in inches.
  • The width dimension of a slot weld is indicated to the left of the symbol.

Count and Finishing

  • The number of welds can be specified in parentheses below the arrow side or in the tail of the welding symbol.
  • Both plug and slot welds typically feature a flush or convex contour.
  • If post-weld finishes are to be noted, this is done above or below the contour symbol.

Section Drawing Significance

  • Section drawings illustrate the members requiring joint preparation for welding operations.

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Description

Explore the key concepts of plug and slot welds, including their symbols, placement, and dimensions. Understand the differences between round and elongated holes and the importance of contour specifications in welding. This quiz will enhance your knowledge of welding symbolism and application.

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