CSWIP 3.1

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  • 1/5 Questions

     
    1. Applying preheat when welding carbon manganese steel is normally done to avoid:

    • A) Slag inclusions
    • B) Hydrogen cracking
    • C) Lack of sidewall fusion
    • D) Porosity
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CSWIP 3.1 - Quiz
About This Quiz

This CSWIP 3.1 quiz assesses knowledge critical for welding carbon manganese steel, focusing on avoiding hydrogen cracking, maintaining toughness, identifying defects, and understanding welding processes like resistance spot welding. It's essential for professionals aiming to certify or recertify in welding inspection and quality control.

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  • 2. 

    Which of the following defects is unlikely to be found by visual inspection.          

    • A) Linear misalignment

    • Undercut

    • Overlap

    • D) Linear slag inclusion

    Correct Answer
    A. D) Linear slag inclusion
    Explanation
    Linear slag inclusion is unlikely to be found by visual inspection because it is a defect that occurs within the weld and is not easily visible on the surface. Slag inclusions are non-metallic materials trapped in the weld metal or between the weld and base metal, and they can be difficult to detect without using non-destructive testing methods such as radiography or ultrasonic testing. Visual inspection alone may not be sufficient to identify linear slag inclusions, making it an unlikely defect to be found through this method.

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  • 3. 

    Which of following mechanical properties of a weld in carbon manganese steel is most affected if the heat input per unit length of weld is excessively high?     

    • A) Elongation

    • B) Tensile strength

    • C) Hardness

    • D) Toughness

    Correct Answer
    A. D) Toughness
    Explanation
    If the heat input per unit length of weld is excessively high in carbon manganese steel, it can lead to a decrease in toughness. High heat input can cause the formation of coarse grains in the weld zone, which can result in reduced toughness. Coarse grains are more prone to cracking and can lead to brittle behavior, reducing the material's ability to absorb energy and resist fracture. Therefore, toughness is the mechanical property most affected by excessively high heat input in this scenario.

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  • 4. 

    Which of the following welding processes uses a resisitive heating system to achieve weld metal deposition.

    • A) Manual metal arc welding

    • B) Submerged-arc welding

    • C) Electro slag welding

    • D) Resistance spot welding

    Correct Answer
    A. D) Resistance spot welding
    Explanation
    Resistance spot welding uses a resistive heating system to achieve weld metal deposition. In this process, two metal pieces are pressed together and an electric current is passed through them. The resistance of the metal generates heat, which melts the metal at the contact points. As the current continues to flow, the molten metal solidifies, forming a weld. This process is commonly used for joining thin metal sheets or wire mesh, and it is often used in automotive manufacturing and construction industries.

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  • 5. 

    You observe centerline cracking a weld that as been made one of five work stations each making similar components. The first action to take is:

    • A) Impound all welding consumables

    • B) Report the occurrence to high authority

    • C) Stop all welding

    • D) Call for full NDT checks

    Correct Answer
    A. B) Report the occurrence to high authority
    Explanation
    The correct answer is b) Report the occurrence to high authority. This is the first action to take because centerline cracking in a weld is a serious defect that can compromise the structural integrity of the components. Reporting the occurrence to high authority ensures that the issue is brought to the attention of those who have the power to address it and take appropriate actions to prevent further occurrences. Impounding all welding consumables, stopping all welding, and calling for full NDT checks may be necessary steps to investigate and rectify the issue, but reporting it to high authority is the initial action to initiate the process.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 18, 2012
    Quiz Created by
    John
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