SMAW Electrodes Flashcards
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Questions and Answers

What forms the weld bead in SMAW?

electrode wire core mixing with molten base metal

Which American Welding Society (AWS) specification(s) cover the most common electrodes for welding carbon (mild) steel and low-alloy, high strength steels?

  • A5.1
  • A5.5
  • A5.1 and A5.5 (correct)
  • None of the above

What is the rated tensile strength of the deposited weld metal from an E7018 electrode?

70,000 psi

What item must all SMAW electrodes used for code-governed work have printed on them?

<p>AWS classification number</p> Signup and view all the answers

Electrodes with powdered iron in their flux belong to which group?

<p>fast-fill (F1) electrode group</p> Signup and view all the answers

A SMAW electrode number that ends with an R means that it is moisture-resistant.

<p>True (A)</p> Signup and view all the answers

What is an example of a deep-penetrating SMAW electrode?

<p>E6010</p> Signup and view all the answers

Welding in vertical and overhead positions can be done with SMAW electrodes larger than 3/16" in diameter if they are not classified as low-hydrogen.

<p>False (B)</p> Signup and view all the answers

At what minimum temperature setting should low-hydrogen SMAW electrodes be stored after opening?

<p>250 degrees F</p> Signup and view all the answers

What should be done with low-hydrogen electrodes that have been exposed to liquid water?

<p>disposed of</p> Signup and view all the answers

Flashcards

What creates the weld bead in SMAW?

The core of the electrode wire melts and mixes with the molten base metal, forming the final weld bead.

What AWS specifications cover common electrodes for welding steel?

AWS A5.1 and A5.5 specifications cover most common electrodes for welding carbon steel and low-alloy, high-strength steels.

What is the tensile strength of a weld using an E7018 electrode?

An E7018 electrode produces a weld with a tensile strength of 70,000 psi.

What must be printed on all SMAW electrodes for code-compliant work?

All SMAW electrodes used for code-governed work must have the AWS classification number printed on them.

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What are 'fast-fill' (F1) electrodes?

Electrodes containing powdered iron in their flux are classified as fast-fill (F1) electrodes. These electrodes deposit weld metal quickly.

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What does an 'R' at the end of an SMAW electrode number signify?

An 'R' at the end of an SMAW electrode number indicates moisture-resistant properties.

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What is an example of a deep-penetrating SMAW electrode?

E6010 is an example of a deep-penetrating SMAW electrode. It produces a deep weld bead with good penetration.

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Can you use large SMAW electrodes for vertical and overhead welding?

SMAW electrodes larger than 3/16" in diameter should not be used for vertical and overhead welding if they are not classified as low-hydrogen.

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At what temperature should you store low-hydrogen SMAW electrodes after opening?

Low-hydrogen SMAW electrodes should be stored at a minimum temperature of 250 degrees Fahrenheit after opening to prevent moisture absorption.

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What should be done with low-hydrogen electrodes exposed to water?

Low-hydrogen electrodes exposed to liquid water should be disposed of. Their properties are compromised, and it can be unsafe to use them.

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Study Notes

SMAW Electrodes Overview

  • The weld bead in Shielded Metal Arc Welding (SMAW) is created by the melting of the electrode wire core combined with the molten base metal.

AWS Specifications

  • The American Welding Society specifications A5.1 and A5.5 define the most common electrodes for welding carbon (mild) steel and low-alloy, high-strength steels.

Tensile Strength

  • The tensile strength of the deposited weld metal from an E7018 electrode is rated at 70,000 psi.

Identification and Packaging

  • All SMAW electrodes intended for code-governed work must display the AWS classification number on the electrodes and the shipping container.

Fast-Fill Electrode Group

  • Electrodes categorized under the fast-fill (F1) group contain powdered iron in their flux.

Moisture Resistance

  • A low-hydrogen SMAW electrode number that ends with an "R" indicates the electrode is moisture-resistant.

Deep-Penetrating Electrodes

  • E6010 is an example of a deep-penetrating SMAW electrode suitable for use on poorly prepared surfaces or butt joints.

Vertical and Overhead Position Welding

  • For welding in vertical and overhead positions, SMAW electrodes larger than 3/16” in diameter should not be used unless they are classified as low-hydrogen (F4) electrodes.

Storage of Electrodes

  • After opening a sealed container of low-hydrogen SMAW electrodes, they must be stored in an oven at a minimum temperature of 250 degrees F to maintain quality.

Disposal Protocol

  • Low-hydrogen electrodes that have come in contact with liquid water should be properly disposed of to ensure safety and maintain structural integrity in welding applications.

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Test your knowledge of SMAW (Shielded Metal Arc Welding) electrodes with these flashcards. Each card covers key terms and specifications related to welding, including AWS standards and electrode properties. Perfect for welding students and professionals alike.

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