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Related Flashcards
Cards In This Set
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What type of weld joint must be used to weld magnesium?
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Only Butt Welds. Prevents the possibility of trapping contaminates.
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Why must all flux be removed from the metal after welding magnesium?
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To prevent severe corrosion.
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What must be done in order to successfully weld titanium?
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The weld zone must be shielded with Helium or Argon.
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What is gas shielding arc welding?
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Gas is used as a covering shield preventing the atmosphere from contaminating the weld.
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What are the advantages of gas-shielding arc weld?
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Stronger, more ductile, and more corrosion resistant.
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What is an advantage of electric arc welding over gas welding?
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Less buckling and warping.
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What determines the amount of heat that will be applied to the work when welding by the oxy-acetylene method?
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The torch tip's orifice size or diameter.
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What will be the result of using a torch tip that's too large or too small?
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Too large of a tip could cause excessive heat that could burn holes into the metal.Too small of a tip could cause insufficient heat causing a lack of penetration giving it a weak weld
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How do you determine the correct size filler rod to be used in welding?
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It's governed by the thickness of the metals being joined.
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What is brazing?
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Metal joining process in which the bonding material is a non-ferrous metal.
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What is one method of controlling expansion when welding a joint?
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By tack welding at intervals along the joint.
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Why is it especially desirable to use a soft flame when welding aluminum?
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To avoid blowing holes through the metal.
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What is the purpose of using flux when welding aluminum?
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Designed to remove the aluminum oxides.
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What is the maximum safe pressure for acetylene gas when welding?
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15 PSI
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How can dents at a steel tube cluster joint be repaired?
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Weld a specially formed steel patch over the dented area.
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