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38 Cards in this Set
- Front
- Back
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Welding symbol |
Is a graphic symbol that shows weld locations and specifications on prints They have been developed and standardized by the AWS |
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Weld joint |
Physical configuration of the joint members to be joined |
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Butt joint |
A weld joint formed when two joint members located in approximately the same plane are positioned edge to edge
Commonly used in sub assemblies and during fabrication and repair operations |
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Lap joint |
Is a weld joint formed when two joint members are lapped over one another Stronger than a butt joint but results in added thickness Commonly welded both sides used for repairs and to extend material lengths |
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T joint |
A weld formed when the edges of two or more joint members are positioned approximately 90 degrees to one another in the form of a T Commonly used in fabricating support structures where the load is transferred to different planes |
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Edge joint |
A weld formed when the edges of two or more joint members are parallel to or nearly parallel to one another Commonly used to join straight or flanged members and to combine strength of members with exposed edges |
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Corner joint |
A weld joint formed when two joint members are positioned at approximately 90degrees with the weld joint at the outside of the joint members
Commonly used in tank and pressure vessel construction, filler metal may or may not be necessary |
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Weld type |
The cross-sectional shape of the filler metal after welding |
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Groove weld |
A weld type made in the groove of the welded pieces Typically used on butt joints and can be customized for specific needs |
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Base metal |
Material to be welded |
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Filler metal |
The metal to be added while making a weld |
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Weld metal |
Metal in the completed weld consisting of the base metal and filler metal that was melted during welding |
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Weld face |
The exposed surface of the weld bounded by the weld toes as viewed from the side on which the welding was done. |
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Weld toe |
The intersection of the base metal and the weld face |
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Weld root |
The area where the weld metal intersects the base metal opposite the weld face, the intersection of the base metals. |
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Root surface |
The surface of the weld on the opposite side of the joint on which welding was done |
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Face reinforcement |
Weld metal that extends above the surface of the joint members on the side of the joint on which welding was done |
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Root reinforcement |
Weld metal that extends above the surface of the joint on the opposite side of the joint on which welding was done |
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Fusion |
The melting together of the filler metal and base metals |
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Groove weld shapes |
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Fillet weld |
A weld type in the cross-sectional shape of a triangle Used to join members that are at right angles to each other like in T or lap joints |
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Plug weld/slot welds |
weld type in the cross-sectional shape of a hole/slot (elongated hole) in one of the members Commonly used during repair operations and to extend material lengths |
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Stud weld |
A weld type produced by joining threaded studs with other parts with heat and pressure |
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Spot, projection and seam welds |
Welds produced by fusion between or on joint members using heat and pressure Spot welds are circular in shape Projection welds are performed through preformed dimples or projections on one of the members Seam weld weld that forms a series of cont or overlapping successive spot welds |
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Back weld |
A weld deposited after the primary weld, in the weld root opposite the face of the primary weld. You will need to back gouge or prepare the material before performing this weld |
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Backing weld |
weld deposited before the primary weld in the weld root. You ill need to prepare the |
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Surfacing weld |
A weld bead deposited on a surface to increase the dimensions of the part or to add special properties to the part |
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Faying surface |
The part of the joint members that are in full contact prior to welding, riveting or bolting |
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Edge weld |
A weld in an edge joint, flanged butt joint or flanged corner joint in which the weld fusion includes the full thickness of the joint members |
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Welding symbols |
The information needed to perform a weld as provided on prints. This includes location, type, size, process and examination procedures. |
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Arrow (welding symbol) |
Part of the welding symbol that identifies the location of weld and if the leader has breaks it will identify which member gets the specified preparation if any
Multiple arrows can be used to specify similar welds at different locations |
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Reference line |
The part of the welding symbol that specified which side of the joint is to be welded
Arrow side below the line and other side above the line Multiple lines can be used to indicate separate operations and sequence of those operations (the operation closest to the arrowhead is performed first) |
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Weld symbol |
A graphic representation that defines the cross-sectional shape of a weld |
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Tail |
Part of welding symbol included when a specific detail(s) must be indicated for that specific weld |
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Supplementary symbols |
Symbol added to welding symbols to provide further information about the weld to be performed. |
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Adhesion |
Joining together of materials along faying surfaces by the bonding action of an outside material, no fusion occurs Common uses include brazed or glued joints |
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NDE non destructive examination |
A symbol that specifies examination methods and requirements to verify weld quality |
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Actual throat |
The shortest distance between the weld root and the face of a fillet weld. |
