Exam 12: Flux Cored Arc Welding Equipment, Setup, and Operation

FCA welding guns are available as water-cooled or air-cooled.The ____________________-cooled gun is more efficient at removing waste heat.

____________________ may convert small amounts of surface oxides like mill scale back into pure metal.

FCA welding guns are available as water-cooled or air-cooled.The ____________________-cooled gun is more portable because it has fewer hoses.

Summarize the advantages and disadvantages of the backhand technique.

As the percentage of CO2 increases in the argon mixture, weld penetration ____________________.

​What two electrical terms have the same meaning?

The electrode classification E70T-10 can have some optional identifiers added to the end of the number such as E70T-10MJH8.Explain the meaning of the optional identifiers, MJH8.

If you feed out ten feet of wire electrode and cut it off, and then lay it on the floor where it forms a circle, the diameter of the circle is known as the ____________________ of the wire.

​What can be added to FCAW electrode fluxes to remove oxides?

The American Welding Society defines ____ as the linear rate at which the arc is moved along the weld joint.

​What does the letter "C" stand for in the FCA electrode E70C?

Which of the following is a similarity between FCAW and GMAW?

​Why is the water pressure on water cooled torches kept below 35 psi (241 kg/mm2)?

____ are added to the flux and form a slag.

____ helps the weld by protecting the hot metal from the effects of the atmosphere.

From 75% to 90% of the weight of ____ electrodes is metal, whereas ____ electrodes have a maximum of 75% filler metal.

____ can be added to improve hardness, strength, creep resistance, and corrosion resistance.

​Unmounted coils are available in weights of around ___________

In the electrode classification system, the "T" in E70T-10 stands for ____________________.

The major atmospheric contaminations come from ____.