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Material Testing
Material testing Mechanical testing have been designed to test several weld properties.Few other material testing techniques are Charpy V-Notch Toughness: Notch toughness is the capacity that a material possesses to absorb energy in the presence of a flaw, such as a notch or crack. The material will…
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Safety and Precautions during welding
As in any welding process, safety precautions are very important. All information relating to the safe operation of the welding equipment and process must be fully understood before beginning work. A careless welder who does not observe some simple rules can cause a dangerous situation…
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Weld crack
Weld crack 1.1. Cracking: If a weld crack is found, it must be removed and magnetic-particle inspection performed to ensure every point has been removed before re-welding. Weld Crack can occur on top of a weld…
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Dissimilar metal in TIG Welding process
Why use this TIG welding process: TIG Tungsten Inert Gas otherwise called as GTAW- Gas Tungsten Arc Welding , Involves melting the metal using the arc created by tungsten electrode, The welding can be done with or without filler metal, Argon Gas is used as shielding around…
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WELDING PROCEDURE FOR JOISTS
WELDING FOR JOISTS AND FINISHING OF MACHINING RAILS Unless otherwise authorized by the engineer, any welding to the top flange of steel members for supporting floor form joists and finishing machine rails will not be permitted. Welding of hangers and supports to shear studs will…
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Weld Test Coupon Preparation
Bend Test Coupon Preparation First the centerline on the plate shall be marked. Then another line 1.0 inch above the center line and another line 1 inch below the center line. This is the section that can be used as an alternate coupon in the event…
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WELDING TEST COUPON PROCEDURES
Welding Procedures Follow a clear example of test coupons welding procedures for a 3G welding certification. In this 3G welding procedure the notes were taken from the same section of the AWS code that are used for the 3/8 inch limited thickness test procedure.
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Weld defects
Failure investigation often uncovers facts that lead to changes in design, manufacturing, or operating practice, which will eliminate similar failures in the future. Failures of insignificant parts can also lead to advances in knowledge and should be done objectively, as with a large structure. The…
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