Area 5 -23 Flashcards by Justin Wood

Oxyacetylene cutting is abbreviated as _____

OFC-A

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The kindling temperature of steel in pure O2 is about _____

1600 – 1800 degrees F

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The most frequently used piece of welding equipment in agricultural settings is the _____

Oxyacetylene cutting torch

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High-nickel steels, cast iron, and stainless steels are _____ by oxyacetylene cutting

Considered uncuttable

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The recommended filter shade for medium cutting is _____

4 or 5

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The two types of oxyacetylene cutting torches are combination and _____

Dedicated

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The two methods of mixing cutting gases are the mixing chamber and the _____ chamber

Injector

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Cutting torches with a slightly angled tip are more efficient for cutting _____

Flat plate

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Rusty materials require ________ preheat prior to cutting

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You can repair damaged cutting torch seats by using a _____

Reamer

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Oxyacetylene cutting speed should be fast enough so that drag lines have a slight _____ slant

Backwards

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Hard slag contains _____ % unoxidized iron

30-40

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The 1G square cut position on pipe is _____

Horizontal rolled

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Proper PPE is critical during oxyacetylene cutting due to _____

Intense light and flying sparks

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Most oxyacetylene cutting tips are made from _____

Copper

Some are chrome plated; reduces spatter sticking

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The open space left in a steel plate caused by oxyacetylene cutting is called a _____

kerf

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FCAW is generally a continuous process and produces more _____ than SMAW

Fumes

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When wire feed rollers are insufficiently tightened, the electrode wire will _____

Not begin to feed instantly

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The first weld in a multi-pass groove weld is the _____

Root pass

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The final pass in a multi-pass groove weld is the _____

Cover pass

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Checking a weld for uniformity is usually a _____ inspection

Visual inspection

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A vertical down weld with a bead that is too high and shows little fusion is _____

Too hot

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A vertical weld that has a pointed, rather than round, back was made _____

Too cold

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In agriculture, the FCAW process is effective on metal thicknesses ranging _____

From 24 ga to +1”

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The _____ power supply provides controlled voltage to the FCAW electrode

The most effective technique for cleaning and preparing weld metal is _____

grinding

An effective welding precaution is the wearing of _____

leather gloves

FCAW uses a consumable _____ electrode

metal wire

A common external shielding gas for FCAW processes is _____

100% carbon dioxide

One advantage of FCAW welds is that the process has _____ abilities

good fusion & penetration

Heat aluminum stock to at least _____ degrees F prior to welding

120

The components of a welded joint are composed of _____ metal

parent

To begin welding on a construction site, a _____ permit is required

hot work

A single run of weld metal deposited on the parent metal is a _____

bead

Plasma is the _____ state of matter

fourth

An industrial FCAW-G power source has a _____ duty cycle

100%

One of four factors to consider when determining correct welding amperage is _____

speed of travel

A common welding method is _____

vertical up

A continuous _____ sound indicates proper arc length

crackling

Flux-cored arc welding electrodes are either externally shielded or _____ shielded

self

One safety concern in FCA welding is _____

intense fumes

One type of plasma arc cutting is the _____ process

transfer arc

Oxygen acetylene cutting works efficiently in _____ position

any

_____ is NOT a type of wire-feed controller

Warp

A/an _____ power source must be used for FCAW processes

constant voltage

A welding symbol indicates _____

desired type of weld

A steel sample marked with C indicates _____

basic open hearth carbon steel

The ability of a steel sample to be stretched is _____

ductility

The science and technology of the applications of various metals is _____

metallurgy

A fabrication shop conducts an inventory of steel angle on hand, and finds they have bins containing 12 feet, 47 feet, 98 feet, and 221 feet, with a total steel angle inventory of _____ feet

378

Fluency in a second language may be an employability _____ in welding careers

advantage

A benefit of maintaining industry-recognized certifications is _____

enjoy higher earnings

To identify aisles, handrails, and fall hazards, use the color _____

yellow

Prior to leaving the work area each day, you should _____

be sure all solvent & paint cans are covered

Check the gauge before using a _____ extinguisher on Class A fires

pressurized water

A metal that resists rust and is almost pure iron is _____

wrought iron

Joining metals by using a bronze filler is known as _____

brazing

The process of combining pure oxygen with a combustible _____ is called oxyfuel

fuel gas

The metal pieces of a fillet weld are placed in the shape of a _____

The size of a welding electrode is determined by _____

diameter of the core wire

Flux or shielding gas is measured and sold by the _____

cubic foot

Use a _____ or push-pull feeder configuration with a soft wire electrode like aluminum

spool-on gun

A job order for roof service ladders requires 1098 pieces of bar stock, each 9” long. The total length of all the bar stock is _____

9882” or 823.5’

Lenses for FCAW should be _____ than lenses for SMAW

darker

Minimum ventilation for GTAW should be _____

10,000 cfm

In plasma-arc cutting, the cutting gas becomes plasma in the _____ stream

Arc

The fabrication symbol for stainless steel is _____

SST

The steelmaking process that improves metal properties, increases density, and preforms the final product is _____

rolling

In a C-1020 steel, the C indicates _____

carbon

Gasses used for flux in welding operations are _____ gases

inert

Cutting several plates simultaneously is called _____ cutting

stack

The job order for a tank support calls for 14 pieces of wide-flange beam, each 33” long. Without allowing for cut loss, this will require at least _____ total of wide-flange beam

462” or 38.5’

Use a straightedge when plasma cutting due to higher _____

travel speed

Acceptable oxy-acetylene arc cuts require minimal _____ prior to welding

cleaning

When a stainless steel UNS description is followed by the letter L, that means _____

extra low in carbon

You purchase a 10 lb. spool of E71T-11 welding electrode; the E stands for _____

electrode

You purchase a 10 lb. spool of E71T-11 welding electrode; the 7 means _____

70,000 psi tensile strength of deposited metal

On that label on the 10 lb. spool of E71T-11 welding electrode; the T means _____

tubular

On the label on the 10 lb. spool of E71-11 welding rods; the 11 means _____

wire chemistry

The metal to be joined by welding is the _____

parent metal

Poor quality welds are caused by the absorption of _____

nitrogen and oxygen

An AWS position code for vertical welding is _____

Conventional stick out for FCAW-G is _____

0.75”

Typical polarity for FCAW-G is _____

DC EP

If the 4th digit in an electrode’s classification is _____, that electrode is recommended for all-position welding

If the 3rd digit in an electrode’s classification is G, the electrode requires _____

external shielding gas

A welder checks out a 50-lb spool of electrode wire; the spool will empty in _____ hours if he burns 4 lbs. of wire per hour

12.5

The majority of joints welded are either butt welds or _____ welds

fillet

When adjusting wire speed and voltage for most FCAW welds, carefully observe all characteristics except _____

the brand

A welder’s duty cycle is _____

the percent of a ten-minute period the welder can be operated

In building a large component, a welder burns 32 pounds of MIG electrode in one 8-hour shift, at the rate of _____ pounds per hour

FCAW electrode holders must be properly _____

grounded

One of the FCAW-G arc transfer processes is _____

pulse spray transfer

A common flux gas for FCAW-G processes is _____

helium

One flux gas mixture not recommended for FCAW-G metal cored electrodes is _____

100% argon (Ar)

One 50-lb spool of generic FCAW electrode is $61.19, or _____ per pound

$1.22

A 4X8’ sheet of ¾" steel plate can be cut into _____ 12”X12” coupons

Fitters / grinders start at $9.65/hour and will gross _____ in a 40-hour work week

$386

In oxyfuel cutting (OFC), uneven drag lines are signs of _____

slow travel speed

During flat position FCAW welding operations, _____ is not a point of focus

brand of electrode holder

Area 5 -23 Flashcards

(100 cards)