MIG welding machines should have what type of voltage characteristics ? -
️️Constant Voltage (Potential)
Fusion - ️️This is achieved by generating and electric arc between the consumable
filler metal electrode and the work piece.
What are the two basic controls for Constant Potential We...
MIG Welding
MIG welding machines should have what type of voltage characteristics ? -
✔️✔️Constant Voltage (Potential)
Fusion - ✔️✔️This is achieved by generating and electric arc between the consumable
filler metal electrode and the work piece.
What are the two basic controls for Constant Potential Welding machines? -
✔️✔️Voltage rheostat and wire feed rheostat.
Fusion requires what type of of power supply unit? - ✔️✔️It requires a power supply
unit that produces Direct Current Straight Polarity (DCSP) or Direct Current Reverse
Polarity(DCRP)
This polarity is used for almost all applications of gas metal arc welding, it give better
penetration, and can be used to well all metals. - ✔️✔️DCRP Direct Current Reverse
Polarity
Metal Inert Gas - ✔️✔️Is an arc welding process that uses an arc between a
continuous filler metal electrode and the weld pool.
What is the MIG Welding Processs - ✔️✔️A process that uses a consumable,
continuously fed filler metal electrode.
The filler metal electrode is commonly referred to as what? - ✔️✔️Filler Wire
What carries the current from the power supply unit to the base metal? - ✔️✔️Filler
Metal Electrode
What forms between the electrode and base metal? - ✔️✔️Electric Arc
This is produced by transfer of the filler metal to the base metal. - ✔️✔️The bead.
What shields the arc and weld? - ✔️✔️Gas, or mixture of gasses
What will you want to protect the leads of the welding machine from? - ✔️✔️Sparks or
Damage.
What are the recommended type of machine for MIG welding? - ✔️✔️Rectifier or Motor
Generator
, MIG welding machines supply what type of current? - ✔️✔️Direct Current
What are the normal amps limits for MIG welding machines? - ✔️✔️200 - 250 amps for
all position welding
What must maintain a constant value to produce a uniform weld? - ✔️✔️Welding
voltage and arc length.
This type of machine is NOT Recommended for MIG welding? - ✔️✔️Constant Current
What type of welding machine is recommended for MIG? - ✔️✔️Constant Potential
The wire feeding mechanism usually include what that energizes the gas flow. -
✔️✔️Welding Power Contactor and a Solenoid
What has drive rollers located inside the gun that actually pulls the welding wire from
the wire feeder? - ✔️✔️Pull Gun
A Pull Gun is used on what size wire and type wire? - ✔️✔️Small diameter and soft
wire such as aluminum and magnesium.
What type of gun has wire that is pushed to the gun by drive rollers in the wire feeding
mechanism? - ✔️✔️Push Gun
A Push Gun can handle what size wire and type wire? - ✔️✔️Heavier diameter and
hard wire such as carbon and stainless steel.
A Push Gun is used to weld with hard wires and where currents often exceed
___________ amps. - ✔️✔️250 amps
Both a Pull Gun and Push Gun are equipped with this items? - ✔️✔️Trigger Switch
Some equipment will have a timer that permits the shielding gas to flow for a
predetermined time for what purpose? - ✔️✔️To Protect the weld until is solidifies
Straight and curved nozzles are used for what purpose? - ✔️✔️To provide easier
access to intricate joints and hard to weld patterns
The filler wire should be similar in composition to what? - ✔️✔️The base metal
Electrode designation are based on what? - ✔️✔️American Welding Society
Classification System
The "E" in E-60S- represents what - ✔️✔️identifies it as an electrode
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