Mig welding test - Study guides, Class notes & Summaries

MIG Welding Test Questions and Answers Already Passed What is the primary shielding gas used in MIG welding? Argon or a mixture of Argon and Carbon Dioxide is commonly used for shielding in MIG welding. Why is the wire feed speed critical in MIG welding? The wire feed speed controls the amount of filler material deposited and directly impacts the weld’s quality and penetration. How does improper voltage affect a MIG weld? Too high voltage can cause excessive spatter and a flat b...

MIG and TIG Welding Test Questions and Answers Rated A+ How does the diameter of the tungsten electrode affect the welding process? Larger diameter tungsten allows for higher amperage and deeper penetration, while smaller diameters are better for thinner materials. What is the significance of cleaning the base metal before welding? Cleaning removes contaminants such as rust, oil, and dirt, which can lead to weak welds or defects. What is a common indication of poor gas coverage i...

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List two advantages and two disadvantages of GMAW (MIG) welding. - ️️Advantages: higher production rate, faster welding speed Disadvantages: less portable, requires more operator skills and techniques for welding and equipment setup Which diameters of wire sizes are most commonly used in short circuit metal transfer when MIG circuit metal transfer when MIG welding? - ️️0.023, 0.030, 0.035, 0.045 What power source is required to perform GMAW (MIG) welding? - ️️DC constant poten...

What must be done to th shielding gas cylinder before it is connected to the flowmeter regulators? - ️️Chained securely in place What may happen if the wire end is cut loose from the spool without holding it? - ️️Unwind What is another name for GMAW? - ️️MIG welding What is a measurement of electrical pressure in the same way that pounds per square inch is a measurement - ️️Voltage In GMAW what do you adjust to change the welding amperage - ️️Voltage The shielding has...

What does each part of the number E70S-6 stand for? - ️️E Electrode 70 Tensile Strength S Solid 6 Coating What is used instead of flux to shield the weld in MIG welding? - ️️Shield Gas What 3 things happen when you squeeze the trigger on a MIG gun? - ️️Shield Gas Flows Wire Flows Electricity Flows What is the part of the MIG gun at the end that sends electricity into the electrode? - ️️Contact Tip What do we use for an electrode in MIG welding? - ️️Wire In order t...

MIG CH 1&2 QUESTIONS AND ANSWERS 100% PASS What is the impact of rust or contaminants on the welding surface? Rust and contaminants can weaken the weld joint and lead to poor weld quality. How do you determine the correct polarity for a MIG welding setup? The correct polarity is typically indicated in the welder's manual based on the type of electrode used. What is a common sign of overheating the base material during welding? A common sign of overheating is excessive warping or...