Term
| _____ _____ _____ is the organization that defines the standard welding process. |
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Definition
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Term
| The GMAW process uses a ____ diameter electrode that is ________ during the process. |
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Definition
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Term
| Whenever a welder uses a hand-held gun, the process is termed a ____ ____ welding operation. |
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Definition
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Term
| A ____ welding operation is accomplished by an operator using specialized equipment and controls that he or she monitors during the welding operation. |
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Definition
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Term
| The term CV relates to a power supply with a _____ ______ output. |
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Definition
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Term
| Direct Current reverse polarity is also termed _______. |
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Definition
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Term
| A ____ _____ supplies the welding filler electrode to the welding arc. |
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Definition
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Term
| Filler material is fed at a ______ rate of speed by the wire feeder. |
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Definition
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Term
| Shielding gas is used to prevent ______ of the molten metal during welding. |
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Definition
| atmospheric contamination |
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Term
| Shielding gas is directed to the area by the _____ ______. |
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Definition
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Term
| The GMAW process for aluminum uses a? |
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Definition
| continuous wire electrode for the filler metal |
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Term
| Aluminum is more thermally conductive than steel by a factor of? |
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Definition
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Term
| Because of its strong chemical attraction to oxygen, aluminum begins to oxidize as soon as it is exposed to? |
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Definition
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Term
| Cast aluminum has a high silicon content for increased? |
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Definition
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Term
| Special care should be taken to raise the temperature of cold aluminum slowly because rapid rises in temperature cause? |
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Definition
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Term
| The main cause of porosity in aluminum welds is the? |
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Definition
| Absorption of hydrogen into the weld pool |
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Term
| Although it is expensive, helium can be added to the shielding gas to? |
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Definition
| Help eliminate any chance of porosity |
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Term
| In GMAW, the length of wire extending beyond the tip of the welding gun's contact tip is called? |
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Definition
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Term
| The push angle of an aluminum GMAW weld is increased for which position? |
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Definition
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Term
| The electrical flow of current for GMAW process is usually through the ________ to the electrode. |
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Definition
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Term
| In which direction does the electricity most often flow when welding aluminum? |
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Definition
| Direct Current Reverse Polarity or DCRP |
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Term
| When the welding process is set up so that the electrode is contacting the workpiece and melting off, this is called the _____-___ or _____-__________-___ mode. |
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Definition
| Short-Arc or Short-Circuiting_Arc mode. |
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Term
| Inverter-type _____ _______ can be used for all types of GMAW. |
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Definition
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Term
| __________ and _________ are characteristics that are used to establish machine and weld settings for a specific mode of welding. |
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Definition
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Term
| Portable gun-type wire feeders are often called _____ gun systems. |
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Definition
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Term
| Gases used from a high-pressure cylinder are reduced to a lower and workable pressure with a _________. |
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Definition
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Term
| A ____ _____ is used to control the amount of gas delivered to the weld zone through the shielding (gas) nozzle. |
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Definition
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Term
| The amount of gas delivered through the gas nozzle is measure in _____ ____ ___ ____ or ___. |
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Definition
| Cubic Feet Per Hour or CFH |
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Term
| To much gas flow through a nozzle causes __________ in the gas flow, which can affect the weld quality. |
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Definition
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Term
| Welding guns are ___-cooled for light duty and _____-cooled for heavy duty welding. |
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Definition
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Term
| Welding power supplies are made to operate on ______- or _____-phase primary current. |
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Definition
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Term
| The time at rated load at which the machine will operate without harm to the machine is called the machine ____ _____. |
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Definition
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Term
| Another name for inductance is _____ ______. It relates to the rate of rise of welding current when the electrode is in contact with the workpiece in the short-arc mode. |
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Definition
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Term
| Adjustment of the inductance control aids in obtaining a more ____ ____ ____, reducing _______, and obtaining a ________ weld crown. |
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Definition
| Fluid Weld Pool, reduce Spatter, obtain Smoother weld crown. |
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Term
| The three types of wire feeders include the ____-type, The ____-type, and the ____-____ type. |
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Definition
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Term
| A welding machine manufacturer's guarantee on equipment is called the machine ________. |
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Definition
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Term
| Proper ___________ of welding equipment will extend the life of the equipment for a extended period of time and reduce the number of major repairs. |
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Definition
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Term
| Guns are rated by ____ _____, in the same way as power supplies are rated. |
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Definition
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Term
| The electrical current produced by the power supply is transferred to the electrode through the? |
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Definition
Contact tip, Ground lead, Clamp, Workpiece.
(The book said contact tip but workpiece is also acceptable since were running DCRP.) |
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Term
| A ______ is used in the gun cable to protect it from wear and is made to fit a specific ________ of wire. It is installed with specific instructions for assembly into the gun adapter. |
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Definition
| Liner. type and size or diameter. |
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Term
| Arc outages in the short_arc mode are generally caused by a faulty _______ connection. |
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Definition
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Term
| Two inert gases used in the GMAW process are ______ and _______. |
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Definition
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Term
| Argon gas is _______ than air and tends to form a blanket around the molten weld pool. |
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Definition
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Term
| Helium gas is ______ than air and requires higher flow rates than argon. |
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Definition
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Term
| When used alone, ______ gas is used primarily on nonferrous materials. |
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Definition
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Term
| In the GMAW process, _______ gas is limited to purging applications. |
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Definition
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Term
| Gas cylinders in storage should always have the ______ ____ installed until ready to be used. |
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Definition
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Term
| Cylinders should always be stored and used in the _______ position, and _______ to a solid object to keep them from falling over. |
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Definition
| upright position(vertical). Secured. |
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Term
| Cylinder gas must always be reduced from the tank pressure to working pressure with a ______________. |
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Definition
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Term
| The gas flow used during welding is metered by a ________ to register flow rates in _____ ____ ___ ____. |
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Definition
| Flowmeter. Cubic Feet Per Hour (CFH) |
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Term
| The GMAW process is considered either a semi-automatic or _____ automatic welding operation. |
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Definition
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Term
| The hands-on skill of the welder is very important when welding in the ____-______ mode. |
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Definition
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Term
| In GMAW, the two major parameters that must be established on the equipment before welding are _____ ____ and ______ _____. |
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Definition
| Welding current(amps) and Welding Voltage. |
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Term
| Electrode extension is the length of wire that extends out of the contact tip. Increasing this length dimension ______ the amount of current flow, making the molten weld pool become sluggish. |
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Definition
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Term
| Using the _____ technique for welding decreases penetration and increases spatter. It is always used when welding aluminum. |
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Definition
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Term
| Using the _____ technique for welding increases penetration and has minimum spatter. |
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Definition
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Term
| Gun angles used in GMAW are difined as "along the weld" or __________ angles. |
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Definition
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Term
| Gun angles used in GMAW are defined as “across the weld” or _________ angles. |
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Definition
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Term
| The type of weld bead pattern made when welding on the joint with no side-to-side motion is commonly called a ? |
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Definition
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Term
| Information about the weld joint design and the welding parameters and variables may be placed on a form called a ? |
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Definition
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Term
| What type of wire do we run? |
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Definition
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