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Adventures in titanium—WPS
Your customer wants two pieces of metal welded together. Why should you bother with a welding procedure specification? Because conformity leads to quality and enhances safety.
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How metal production affects the welding process
Welders may recognize that when porosity is present, the cause isn’t always the shielding gas, welding filler, or operator error. It can be caused by the steel production method, which can introduce porosity and other flaws.
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So you want to be a certified welding inspector?
Not many people who enter the welding
profession think about their long-term career
path. A certified welding inspector may be
the next logical step for the right welder.
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Upfront welding inspection considerations
Welding inspection involves much more than simply checking the accuracy of welds after they are made. Inspectors must be knowledgeable about codes, standards, materials, and other fabricating processes.
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Building a stronger welding program
Bellingham Technical College launched its Welding Rodeo in 2002 to spur enrollment and raise its public profile. Now one of the premier welding competitions in the Pacific Northwest, the event has helped the school triple its enrollment in welding...
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How to relieve stress in welding
Relieving residual stress through welding technique as well as temperature control can greatly reduce weld distortion.
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Welding Update for Infrastructure: No nonsense with NDT
Infrastructure is defined as the basic physical systems that serve a community's population, such as roads, bridges, utilities, water, and sewage. These systems are essential for enabling productivity in the economy, so it is crucial to ensure...
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Automated optimization of weld seams
Automated vision inspection and optimization technology can help streamline manufacturing operations and improve part quality. This technology detects defects in welding seams that often are missed by manual inspection and provides documentation...
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Seeing the light with NDT
A welding shop specializing in aerospace systems and parts adds nondestructive testing to its in-house capabilities to keep pace with inspection requirements and speed up part turnaround.
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Quality inspections
To ensure quality welds, it is important to have a quality weld inspection program in place. In order to do so, a company must understand how to evaluate weld characteristics, determine weld quality, and have a welding inspector capable of...
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First line of defense
Good welders learn to inspect their own work, but welders are just one part in a long list of variables (and people) involved in ensuring quality welds. Thorough communication of the welding parameters, as well as proper training to carry out the...
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Entering a new phase in weld inspection
Reliable and consistent weld inspection is a significant part of any weld quality assurance program. One type of weld inspection used over the last several decades employs ultrasonics.
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A review of common nondestructive tests
Five types of nondestructive testing are common for tube and pipe weld inspection, and each has advantages and disadvantages that may make one more suitable than another for your inspections.
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Weld inspection before you weld
Although it takes effort and time, procedure qualification testing can help you standardize your welding procedures and know what to expect when it comes to the quality of your manufactured parts.
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Fatigue Failures
Fatigue causes the majority of mechanical element failures in structures and machinery. It is important to understand the causes of the failure and how to prevent or repair it.
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Understanding weld discontinuities
A welder's primary concern in any kind of work is ensuring his weld is sound. For this reason, it's important for an inspector examining the weld to be able to spot a variety of weld discontinuities, including: Porosity. Incomplete...
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In-service weld defects, Repair, replace, or do nothing?
Editor's Notes: In-service weld defects found in Australian refineries by an inspection team required assessment to determine the best course of action - repair, replace, or do nothing. This is the author's first-person account of the team's...
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Quality as Part of the Contract
Leaders who oversee weld designs, materials, methods, personnel training, and manufacturing teams should promote welding performance by addressing quality and testing issues in contracts for any work. Total quality systems and weld acceptance...
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Preparing, testing bend samples
Bend tests for aluminum are different than for steel. For instance, lack of fusion discontinuities in aluminum usually don't show up as well in radiographs. A bend test is a more discriminating way to test your aluminum weld.
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Will your weld hold up? Discovering and preventing incomplete fusion
This article examines the common weld defect known as incomplete fusion. It takes an in-depth look at the causes of this problem, how it is detected, and how to prevent it.
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Inspection Connection: Radiographic and ultrasonic weld inspection
This article outlines the differences in radiographic and ultrasonic weld inspection, the two most common methods if nondestructive testing. It gives an overview of both methods, including how they are used.
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What welding inspectors should know about welding codes and standards
Many aspects of welded component design and fabrication are governed by documents known as codes and standards.
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Radiographic and ultrasonic weld inspection
This article outlines the differences in radiographic and ultrasonic weld inspection, the two most common methods if nondestructive testing. It gives an overview of both methods, including how they are used.
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