Wire Feed, Welding, Equipment, And Consumables Part A

Front 1

This has been developed primary leave for increasing production, efficiency, and quality in welding on a variety of construction materials

Back 1

Wire feed welding

Front 2

What are the harmful fumes that may become toxic in large concentration during welding operation. ozone forms when oxygen in the atmosphere comes in contact with the intense, ultraviolet light radiation that the arc produces

Back 2

Ozone, carbon monoxide, phosgene, or nitrogen dioxide

Front 3

is the minimum recommended shade for the AWS and CSA

Back 3

Shade number 10

Front 4

This is the suggested shade when you weld in the range of 60 Amps to 160 amps

Back 4

Shade number 11

Front 5

Tinted safety glasses, complete with side shields is the recommended shade for the welder and other person in the welding area

Back 5

Shade number 2

Front 6

What are the 3 types of Power source that delivers current to the electrode and work piece to produce an arc

Back 6

Motor-driven generators or alternators

Transformer – rectifiers

Inverters

Front 7

The control system primarily controls the feed, motors, speed and start and stops of the electrode field?

Back 7

Wire feeder hoses and control system

Front 8

This is typically designed to carry welding, current shielding gas control, switch wires, and coolant?

Back 8

Electrode holders and cable, assemblies, (guns)

Front 9

The primary purpose of the ______________ Is protect the molten weld metal from atmospheric contamination

Back 9

Shielding gas

Front 10

The ____ reduces the gas source pressure to a constant, working pressure

Back 10

Regulator

Front 11

________ control the rate of flow of shielding gas to the gun nozzle

Back 11

Flowmetres

Front 12

This is more common when using the fully automatic mode where the high speed high amperage welding is required

Back 12

Water cooling system

Front 13

To protect yourself from electrical shock when welding, you must insure that all electrical equipment is properly ___________?

Back 13

Grounded

Front 14

What are the first two signs of oxygen deficiency

Back 14

Dizziness, euphoria

Front 15

What should your protective clothing characteristic be when welding with GMAW and why?

Back 15

Clothing should be dark tightly knit 100% cotton to reduce reflected, light radiation, and promote fire resistance

Front 16

Is it advisable to weld with any arc welding process under wet weather conditions?

Back 16

When exposed to wet weather, conditions or standing on a wet surfaces, protect yourself from electric shock, hazards by wearing rubber boots with dry socks, and gloves

Front 17

Is it advisable to weld with any arc welding process under wet weather conditions?

Back 17

When exposed to wet weather, conditions or standing on a wet surfaces, protect yourself from electric shock, hazards by wearing rubber boots with dry socks, and gloves

Front 18

How might using a shielding gas during welding affect, air quality?

Back 18

Shielding gases, insufficient quantities displayed enough air to render the work area. Oxygen deficiency, dizziness, and euphoria is usually the first sign of oxygen deficiency precautions must always be taken to ensure adequate breathing air is supplied.

Front 19

List the essential equipment components that always required to set up a wire feed unit?

Back 19

Power source, wire feeder, gun and cable assembly, spooled filler wire, Gas control equipment

Front 20

If a machine is rated for 300 Amps with a 60% duty cycle this means that the machine can operate at 300 Amps for how long?

Back 20

6 minutes

Front 21

How many amps can a machine operate continuously if the machine is rated for 300 Amps with a 60% duty cycle?

Back 21

300 Amps x .60 = 180 amps

Front 22

Welding machine, power source are manufactured with duty cycle Readings from?

Back 22

20% to 100%

Front 23

If a cc welding machine is used for wire welding, it must be equipped with?

Back 23

Voltage sensing unit

Front 24

What three properties are wire feed feeding power source ratings based on

Back 24

Amperage voltage duty cycles

Front 25

What is the most common current that the wire process use?

Back 25

Constant voltage or (constant potential)

Front 26

A CV power source increases, or decreases the welding current to account for what?

Back 26

Voltage fluctuation

Front 27

Why is a constant voltage constant speed system preferred over constant current voltage sensing system?

Back 27

Smoother arc characteristics and consistent burn off rate

Front 28

What must a constant current machine be equipped with to be used for wire process?

Back 28

A voltage sensing unit

Front 29

The drive rolls pull the wire from the spool and push it through a conduit liner to the welding gun

Back 29

Push system

Front 30

The drive rolls pull the wire from the spool and push it through a conduit liner to the welding gun

Back 30

Push system

Front 31

It has a dry roll mounted on it close to the contact and air pressure a flexible shaft or a electric motor may drive the rolls

Back 31

Pull system System or (spool on the gun)

Front 32

This system combines the two other systems. It is well suited to feeding, soft wires. the gun has drive rolls And simultaneously pushing the wire from a wire feeder

Back 32

Push-pull system

Front 33

They may also have electrically operated valves, tied into the control system for shielding gas and water cooling systems

Back 33

Solenoids

Front 34

It is usually use with a constant voltage power source. This system maintains arc length by automatically adjusting the amperage output as the electrode extension stick out changes.

Back 34

Constant speed wire feeder

Front 35

It is typically uses a constant current power source. The arc voltage change caused by a change in electrode extension is sensed By the motor drive

Back 35

Voltage-sensing wire feeder

Front 36

Drive rolls should be a minimum of __________ In diameter

Back 36

19mm (3/4”)

Front 37

Contact tube or contact is usually made of?

Back 37

Copper or copper alloys

Front 38

This is usually made of copper or copper alloys, and its main function are to transfer electrical current to the electrode and direct the wire to the weld zone.

Back 38

Contact tube or contact tip

Front 39

In short-circuiting mode for example the tube is usually flash or extended just beyond the nozzle for spray transfer. The tube is usually recessed about How long?

Back 39

3.2 mm(1/8”)

Front 40

Nozzles, gas nozzles are normally made of?

Back 40

Copper alloys

Front 41

Nozzles or gas nozzle has a inside diameter ranging from

Back 41

9.6 mm to 22.4 mm

Front 42

Wound up like a spring

Back 42

Helical

Front 43

What are the three types of cable liners?

Back 43

NTP, nylon Teflon or plastic

Front 44

What is the maximum distance you can push wire using a push feed system?

Back 44

4.5 m or 15 feet

Front 45

What is the most common pull what is the maximum distance you can feed wire through a bush pole feed system?

Back 45

Spool on the gun

Front 46

What is the maximum distance you can feed the wire through a push-up pull system?

Back 46

15.2 m, (50 ft)

Front 47

Which system maintains arc length by automatically adjusting the amperage output as the electrode extension changes

Back 47

Constant speed wire feeder

Front 48

The circles diameter formed by one loop, or a maximum of 3 m of electrode wire when cut from a package and laid unrestrained on a flat surface

Back 48

Cast

Front 49

CSA

Back 49

Canadian standards association or group

Front 50

An electrode that is consumed into the molten weld and provides filler metal

Back 50

Consumable electrode

Front 51

Metal or alloy Added to make a welded brass or soldered joint

Back 51

Filler metal

Front 52

Material that hinders, or prevents the formation of oxides and other undesirable substance in molten metal, and on solid metal surfaces into dissolve, or otherwise facilitate the removal of those substance from the world zone

Back 52

Flux

Front 53

A corkscrew effect, exhibited by a ring of electrode filler wire, when place on a flat surface, without restrain if both ends of the wire live flat, there is no helix if one end is raised, and the distance of the surface is the ______?

Back 53

Helix

Front 54

International organization and standardization

Back 54

ISO

Front 55

A metals ability to win stand or resist an applied force. Some mechanical properties are 10 style strength, duct and fracture toughness.

Back 55

Mechanical property

Front 56

A form of welding filler metal normally packed as a coils or that may or may not conduct electrical current, depending upon the welding process

Back 56

Welding wire

Front 57

Electro wires from GMAW are available on spools ranging from_______ coils from _______ And drum size up to ______ ?

Back 57

(1 lb to 60 lb) , (25lb to 60lb), 1000lb

Front 58

Keep them covered and away from you mid environments

Back 58

Keep them covered and away from you mid environments

Front 59

This affect force occurs each time the wire contacts the work

Back 59

Pinch affect

Front 60

This form of metal transfer occurs when the weld metal passes through an open arc in the large form

Back 60

Globular transfer

Front 61

It occurs when using direct current electro DCP with a shielding gas containing at least 85% argon, and by increasing the welding current above a critical value, called the transition current

Back 61

Spray transfer

Front 62

It is a variation of the spray ark transfer mode. This allows the welding of materials in all positions, while producing high deposition rate with little or no spatter.

Back 62

Pulsed arc transfer

Front 63

This allows you to change welding programs by adjusting one control

Back 63

Synergic

Front 64

Voltage

Back 64

Voltage

Front 65

This is the amount of current flow. And controls, penetration, and burn-off rate of the electrode

Back 65

Amperage

Front 66

It is the force that overcomes resistance to allow amperage flow

Back 66

Voltage

Front 67

It is the distance between the electrode contact in the end of the unmelted electrode

Back 67

Electrode extension (stickout or electrical stickout)

Front 68

What is the distance off short circuiting metal transfer generally uses electro extension

Back 68

6 mm to 10 mm

Front 69

What is the distance Of electrode extension for globular and spray transfer mode?

Back 69

12 mm to 25 mm

Front 70

the main purpose of ___________ Is to limit the short-circuiting current, to Reduces spatter.

Back 70

Slope

Front 71

What is happening when Excessive slope results in sufficient current available to melt the wire off clearly this results in the wire freezing to the word peace

Back 71

Bending over (stubbing)

Front 72

Electrode wires for GMAW are available in diameters ranging from?

Back 72

0.5 mm to 3.2 mm

Front 73

Some wires are _________ coated to improve the electrical conductivity of the wire as it passes through the conduct

Back 73

Copper

Front 74

Some wires are _________ coated to improve the electrical conductivity of the wire as it passes through the conduct

Back 74

Copper

Front 75

__________ are classified according to their chemical composition as manufactured and to the as-welded mechanical properties of the deposited weld metal

Back 75

Solid wires (hard wires)

Front 76

What specification is A5.18 Over solid low carbon, steel filler metals

Back 76

AWS

Front 77

What specification is A5.18 Over solid low carbon, steel filler metals

Back 77

AWS

Front 78

This process is used for machine semi automatic and fully automatic, welding of carbon and alloy steals, stainless steel, and hard surfacing applications

Back 78

FCAW

Front 79

An electrode containing a flux that generates shielding gas required. This method obtains shielding from vaporize, flux ingredients that display atmospheric air, and by slag compositions that covered the molten metal.

Back 79

Self-shielded FCAW

Front 80

Self-shielded, FCAW, generally employees, long electrode extensions ranging from?

Back 80

19 mm to 95 mm

Front 81

FCAW wire manufacturing the wire size is ranging from?

Back 81

0.8 mm to 4 mm

Front 82

This cored wires have good operational, and positional capabilities with easy slag removal

Back 82

Rutile

Front 83

This cored wires have good operational, and positional capabilities with easy slag removal

Back 83

Rutile

Front 84

This cored wires have a limestone/fluorspar flux core. This arc transfer is globular, which gives reasonable operating performance and produces good chemical properties

Back 84

Basic

Front 85

This cored wires have good operational, and positional capabilities with easy slag removal

Back 85

Rutile

Front 86

This cored wires have a limestone/fluorspar flux core. This arc transfer is globular, which gives reasonable operating performance and produces good chemical properties

Back 86

Basic

Front 87

This wires have basic or rutile cores that contain fluorides carbonate, aluminum and magnesium compounds.

Back 87

Self-shielded wires

Front 88

Specification for carbon, steel, electrodes, and rods for gas shielded arc welding

Back 88

A5.18

Front 89

Specification for carbon, steel, electrodes, and rods for gas shielded arc welding

Back 89

A5.18

Front 90

Specification for low alloy, steel, electrodes, and rods for gas shielded arc welding

Back 90

A5.28

Front 91

Specification for carbon, steel, electrodes, and rods for gas shielded arc welding

Back 91

A5.18

Front 92

Specification for low alloy, steel, electrodes, and rods for gas shielded arc welding

Back 92

A5.28

Front 93

Specification for carbon steel electrodes for flux cored welding

Back 93

A5.20

Front 94

Flux cord wire specification for CSA for FCAW 1 indicates that the work can be used for

Back 94

All position

Front 95

Flux cord wire specification for CSA for FCAW 1 indicates that the work can be used for

Back 95

All position

Front 96

Flux cord wire specification of CSA for FCAW 2 indicates that the wire can be used only for

Back 96

Flat and horizontal positions

Front 97

Flux cord wire specification of CSA for FCAW 1 indicates that the wire can be used for

Back 97

All position

Front 98

Flux cord wire specification of AWS for FCAW 1 indicates that the wire can be used for

Back 98

All positions

Front 99

Flux cord wire specification of AWS for FCAW 1 indicates that the wire can be used for

Back 99

All positions

Front 100

Flux cord wire specification of AWS for FCAW 0 indicates that the wire can only be used for

Back 100

Flat and horizontal positions

Front 101

Metal-cored wire Manufacturing process involves blending of what material?

Back 101

Metal powders or iron powders