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What is the process of removing weld metal and base metal from the weld root side of a welded joint to facilitate complete fusion and complete joint penetration upon subsequent welding from that side?
What is the process of removing weld metal and base metal from the weld root side of a welded joint to facilitate complete fusion and complete joint penetration upon subsequent welding from that side?
What discontinuity results from an arc, consisting of any localized remelted metal, heat-affected metal, or change in the surface profile of any metal object?
What discontinuity results from an arc, consisting of any localized remelted metal, heat-affected metal, or change in the surface profile of any metal object?
What is the term for a weld discontinuity related to the excessive build-up of weld metal?
What is the term for a weld discontinuity related to the excessive build-up of weld metal?
What is the term for the discontinuity resulting from entrapped slag in the weld metal or at the weld interface?
What is the term for the discontinuity resulting from entrapped slag in the weld metal or at the weld interface?
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What should always be requested to ensure that the proper type and grade of material is received?
What should always be requested to ensure that the proper type and grade of material is received?
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What is overlap in welding?
What is overlap in welding?
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What can overlap in welding mask?
What can overlap in welding mask?
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What is the potential consequence of overlap in welding?
What is the potential consequence of overlap in welding?
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How is overlap in welding corrected?
How is overlap in welding corrected?
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What is the purpose of magnetic particle testing (MT) after correcting overlap in welding?
What is the purpose of magnetic particle testing (MT) after correcting overlap in welding?
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What is the purpose of becoming familiar with code and procedure requirements ahead of time?
What is the purpose of becoming familiar with code and procedure requirements ahead of time?
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Why should machinists be made aware of the required tolerances for material preparation work?
Why should machinists be made aware of the required tolerances for material preparation work?
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What is the maximum stress a material can withstand while being stretched before necking?
What is the maximum stress a material can withstand while being stretched before necking?
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What is weld reinforcement?
What is weld reinforcement?
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What represents a danger to a weld or structure in welding?
What represents a danger to a weld or structure in welding?
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What is the stress at which a material begins to permanently deform?
What is the stress at which a material begins to permanently deform?
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What is a document detailing requirements and acceptance criteria for a product, forming a basis of a contractual agreement?
What is a document detailing requirements and acceptance criteria for a product, forming a basis of a contractual agreement?
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What is a document used to judge a product, summarizing requirements for welding processes, procedures, materials, etc.?
What is a document used to judge a product, summarizing requirements for welding processes, procedures, materials, etc.?
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What is the type of force that tends to pull an object or a surface in opposite directions?
What is the type of force that tends to pull an object or a surface in opposite directions?
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What is the detailed methods and practices involved in the production of a weldment?
What is the detailed methods and practices involved in the production of a weldment?
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What should be referred to in order to determine acceptance criteria for discontinuities?
What should be referred to in order to determine acceptance criteria for discontinuities?
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How are weld discontinuities divided?
How are weld discontinuities divided?
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What are process or procedure-related discontinuities influenced by?
What are process or procedure-related discontinuities influenced by?
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What is the nonmetallic product resulting from the mutual dissolution of flux and nonmetallic impurities in welding or brazing processes?
What is the nonmetallic product resulting from the mutual dissolution of flux and nonmetallic impurities in welding or brazing processes?
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What is the term for a discontinuity that renders a part unable to meet minimum acceptance standards or specifications?
What is the term for a discontinuity that renders a part unable to meet minimum acceptance standards or specifications?
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What is the property of a material to sustain large permanent changes in shape without breaking?
What is the property of a material to sustain large permanent changes in shape without breaking?
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What is the distance a weld fusion extends into the base metal during welding?
What is the distance a weld fusion extends into the base metal during welding?
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What is the localized damage that occurs when a material is subjected to cyclic loading?
What is the localized damage that occurs when a material is subjected to cyclic loading?
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What is the included angle between the groove faces of a groove weld?
What is the included angle between the groove faces of a groove weld?
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What is a weld of approximately triangular cross-section joining two surfaces at right angles in lap, T-joint, or corner joint?
What is a weld of approximately triangular cross-section joining two surfaces at right angles in lap, T-joint, or corner joint?
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What is a fracture-type discontinuity characterized by a sharp tip and a high ratio of length and width to opening displacement?
What is a fracture-type discontinuity characterized by a sharp tip and a high ratio of length and width to opening displacement?
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What is the support material placed behind the joint in welding, and can be metal or nonmetal?
What is the support material placed behind the joint in welding, and can be metal or nonmetal?
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What is a document that incorporates rules of good practice to obtain the results required by a standard or specification?
What is a document that incorporates rules of good practice to obtain the results required by a standard or specification?
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What refers to examination methods that evaluate components without damaging their intended service life?
What refers to examination methods that evaluate components without damaging their intended service life?
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What is a groove weld condition where the weld metal extends through the joint thickness?
What is a groove weld condition where the weld metal extends through the joint thickness?
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What is the discontinuity resulting from entrapped slag in the weld metal or at the weld interface?
What is the discontinuity resulting from entrapped slag in the weld metal or at the weld interface?
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What can result from insufficient root opening in welding?
What can result from insufficient root opening in welding?
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What may excessive root opening cause in welding?
What may excessive root opening cause in welding?
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What can misalignment of parts cause in welding?
What can misalignment of parts cause in welding?
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What do codes and specifications provide for in welding?
What do codes and specifications provide for in welding?
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What can irregularities in the finished surface to be welded lead to?
What can irregularities in the finished surface to be welded lead to?
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What may sheared surfaces lead to in welding?
What may sheared surfaces lead to in welding?
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What can flame cut surfaces lead to in welding?
What can flame cut surfaces lead to in welding?
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What can plasma cutting produce that leads to weld discontinuities?
What can plasma cutting produce that leads to weld discontinuities?
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What makes water jet cutting suitable for welding?
What makes water jet cutting suitable for welding?
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What is required before cutting and material preparation begins in welding?
What is required before cutting and material preparation begins in welding?
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What should be consulted before cutting and material preparation begins in welding?
What should be consulted before cutting and material preparation begins in welding?
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What do codes, standards, and company welding procedures provide in welding?
What do codes, standards, and company welding procedures provide in welding?
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What can insufficient root opening lead to?
What can insufficient root opening lead to?
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What may excessive root opening cause?
What may excessive root opening cause?
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What can misalignment of parts cause?
What can misalignment of parts cause?
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What do codes and specifications provide workmanship tolerances for?
What do codes and specifications provide workmanship tolerances for?
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What do irregularities in the finished surface to be welded lead to?
What do irregularities in the finished surface to be welded lead to?
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What may sheared surfaces lead to?
What may sheared surfaces lead to?
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What can flame cut surfaces lead to?
What can flame cut surfaces lead to?
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What can plasma cutting produce, leading to weld discontinuities such as porosity?
What can plasma cutting produce, leading to weld discontinuities such as porosity?
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What does water jet cutting not produce, making it suitable for welding?
What does water jet cutting not produce, making it suitable for welding?
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What is required when welding on machine-cut surfaces to avoid weld discontinuities?
What is required when welding on machine-cut surfaces to avoid weld discontinuities?
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What should be consulted before cutting and material preparation begins?
What should be consulted before cutting and material preparation begins?
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Study Notes
Welding Discontinuities and Joint Preparation
- Insufficient root opening can lead to inadequate joint penetration, incomplete fusion, and slag entrapment
- Excessive root opening may cause melt-through, porosity, slag entrapment, and additional distortion
- Misalignment of parts can cause insufficient effective throat and stress concentration at the weld root
- Codes and specifications provide workmanship tolerances for bevel angle, root face thickness, and root openings
- Table 2 summarizes the dimensional errors and resulting weld discontinuities or defects
- Irregularities in the finished surface to be welded can lead to various weld discontinuities
- Sheared surfaces may lead to porosity, slag entrapment, and incomplete fusion
- Flame cut surfaces may lead to notches, irregularities, and slag adherence, causing discontinuities
- Plasma cutting can produce notches, dross, and oxide film, leading to weld discontinuities such as porosity
- Water jet cutting does not produce thermal changes or oxide formation, making it suitable for welding
- Welding on machine-cut surfaces requires the removal of lubricants to avoid weld discontinuities
- Codes, standards, and company welding procedures should always be consulted before cutting and material preparation begins
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Description
Test your knowledge of welding discontinuities, defects, and joint preparation with this informative quiz. From understanding slag and weld reinforcement to grasping the significance of codes and standards in determining acceptance criteria, this quiz covers essential terminology and key factors in welding processes.
