GTAW: Welding Processes questions
and Answers| Final Exam 2025
What is the typical range of current used for GTAW on thin materials?
For thin materials like sheet metal, lower current settings around 20 to 60 amps are typically
used in GTAW.
What is the common torch angle used in GTAW welding?
A torch angle of 15 to 20 degrees from vertical is commonly used to ensure proper weld bead
formation and control over the molten pool.
What is a Weld Procedure Qualification (WPQ)?
It confirms that a welding procedure produces a strong, high-quality weld.
What does a Weld Procedure Specification (WPS) include?
It includes details like welding process, material type, and welding parameters.
What is the difference between a PQR and a WPS?
A PQR documents test results, while a WPS is a guideline for future welds.
Why is following a WPS important?
It ensures welds are consistent and meet quality standards.
1
, What tests are commonly performed during Weld Procedure Qualification?
Common tests include visual inspection, mechanical testing, and NDT.
What factors affect Weld Procedure Qualification results?
Factors like welding technique, heat input, and material type affect results.
What is the significance of post-weld heat treatment?
It relieves stress and improves the weld's toughness and strength.
When should a WPQ be requalified?
It should be requalified if welding procedures or materials change.
What does a Procedure Qualification Record (PQR) document?
It documents the results of welding tests to verify quality and strength.
What is the role of welding certification in WPQ?
Certification ensures welders can perform according to procedures.
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What is Eddy Current Testing (ET)?
ET uses magnetic fields to detect surface and near-surface defects in materials.
2
and Answers| Final Exam 2025
What is the typical range of current used for GTAW on thin materials?
For thin materials like sheet metal, lower current settings around 20 to 60 amps are typically
used in GTAW.
What is the common torch angle used in GTAW welding?
A torch angle of 15 to 20 degrees from vertical is commonly used to ensure proper weld bead
formation and control over the molten pool.
What is a Weld Procedure Qualification (WPQ)?
It confirms that a welding procedure produces a strong, high-quality weld.
What does a Weld Procedure Specification (WPS) include?
It includes details like welding process, material type, and welding parameters.
What is the difference between a PQR and a WPS?
A PQR documents test results, while a WPS is a guideline for future welds.
Why is following a WPS important?
It ensures welds are consistent and meet quality standards.
1
, What tests are commonly performed during Weld Procedure Qualification?
Common tests include visual inspection, mechanical testing, and NDT.
What factors affect Weld Procedure Qualification results?
Factors like welding technique, heat input, and material type affect results.
What is the significance of post-weld heat treatment?
It relieves stress and improves the weld's toughness and strength.
When should a WPQ be requalified?
It should be requalified if welding procedures or materials change.
What does a Procedure Qualification Record (PQR) document?
It documents the results of welding tests to verify quality and strength.
What is the role of welding certification in WPQ?
Certification ensures welders can perform according to procedures.
---
What is Eddy Current Testing (ET)?
ET uses magnetic fields to detect surface and near-surface defects in materials.
2
