4Th Year Tools And Equipment

Front 1

What is the bottom shear used for on the ironworker?

Back 1

For cutting heavy plate

Front 2

What is the safety device on the ironworker punch called?

Back 2

A stripper

Front 3

When using the punch and die assembly on the ironworker how must the bottom die be set up?

Back 3

Make sure the small end of the die is facing up

Front 4

How is the capacity rated on an ironworker?

Back 4

Based on diameter of base and thickness of material

Front 5

What are the 3 different methods of press braking?

Back 5

Coining, air bending and bottoming

Front 6

If you need to reduce the amount of tonnage needed to form a bend, what could you do?

Back 6

Upsize your v die. A wider v die will reduce tonnage needed

Front 7

How is capacity shown on a press brake?

Back 7

In tonnage, tons per linear ft

Front 8

For material over 1/8 of an inch what can you do to assure weld penetration?

Back 8

You must bevel the metal at 30 degrees each side

Front 9

When welding heavy gauge material what kind of seam should you use?

Back 9

A standing seam

Front 10

What is the max psi for mig/oxyacetylene?

Back 10

15 psi

Front 11

What setting would you put the machine on when tig welding aluminum?

Back 11

ACHF

AC high frequency

Front 12

What setting would you put the machine on when tig welding aluminum?

Back 12

ACHF

AC high frequency

Front 13

What setting would you put a tig machine on when welding mild steel?

Back 13

DCEN

Front 14

What determines size of wire or electrode when welding?

Back 14

Material thickness

Front 15

What is the shop rule for bend allowance??

Back 15

Subtract 1mt

Front 16

What does CNC stand for?

Back 16

Computer numerical control

Front 17

What is the rule of thumb when using the punch function on the ironworker?

Back 17

Punch diameter should be equal too or greater than the thickness of the material

Front 18

What is the rule of thumb when using the punch function on the ironworker?

Back 18

Punch diameter should be equal too or greater than the thickness of the material

Front 19

What kind of cuts can a circle shear do?

Back 19

Straight - such as slitting a sheet

Irregular - such as elbow gores

Circular - such as discs

Front 20

What kind of shear would you use if you had to cut out an inside circle?

Back 20

Ring and circle shear

Front 21

What machine would you use for mass producing pattern pieces for duct fittings?

Back 21

Plasma cutting machine

Front 22

What will a smaller die give you when press braking?

Back 22

Produces a sharper bend radius, but requires more tonnage

Front 23

What will a wider die give you when press breaking?

Back 23

Larger bend radius using less tonnage — will increase the amount of springback

Front 24

What is the most common type of press braking?

Back 24

Air bending

Front 25

By using a die with an opening equal to 8mt what will it give you?

Back 25

An inside bend radius equal to the thickness of the material

Front 26

How is shear capacity given?

Back 26

For metal tensile strength or thickness of mild steel - not for length of the piece to be cut

Front 27

When would you use a lap joint?

Back 27

Only when no other method is possible — very difficult to weld

Front 28

What kind of weld joint would you use on light gauge metal?

Back 28

Flange joint

Front 29

Shear capacity is given how??

Back 29

The max thickness of metal and length of material the shear is designed to cut

18-10 means 18 gage mild steel 10 ft long

Front 30

How could you increase the capacity of most hydraulic shears?

Back 30

Increasing rake angle of the knives

Front 31

When using a shear what could cause a burr on the material?

Back 31

If the clearance between the two knives is too large

Front 32

On a press brake what part of the machine does the bending of the metal?

Back 32

The ram

Front 33

On a roll forming machine what is the min length of metal that can be put through?

Back 33

Depends upon the distance between the rolls — metal must engage at least 3 rolls at a time

Front 34

What is the difference when comparing how capacity for a shear is measured compared to a brake?

Back 34

Given in gauge then length for shear

Length then gauge for brake

Meaning on a brake, it’s capacity will change based on length of material. On a shear length of material will not change capacity

Front 35

In straight polarity will the electrode be negatively or positively charged?

Back 35

Negative

Front 36

In reverse polarity the electrode will be?

Back 36

Positive

Front 37

How is brake capacity given?

Back 37

In 3 or 4 numbers

Eg 816 or 1016

First number is length

Second number is gage of metal

Front 38

How is shear capacity given?

Back 38

Max thickness of metal followed by length

Eg 1810 means 18 gage mild steel 10 ft long

Front 39

Different rotary machines

Back 39

Back (Definition)

Front 40

What machine would you use to form shapes such as round pipe and tapers?

Back 40

Forming rolls

Front 41

What kind of machine would be used to make edges and seams such as Pittsburghs, pipe locks, flanges?

Back 41

Rollforming machines

Front 42

On a brake how would you set the clearance between the bending leaf and the nose bar?

Back 42

By adjusting the horizontal adjustment

Front 43

In the psychometric chart what do the vertical lines represent? Diagonal? Curved? Horizontal?

Back 43

Dry bulb temp

Wet bulb temp

Relative humidity

Dew point

Front 44

What should the clearance between the bending leaf and the nosebar be on a brake?

Back 44

11/2 to 2 times metal thickness

Front 45

If you wanted to do many bends of the same angle in a brake what could you set to achieve this?

Back 45

The stop

Front 46

If you had to make a large number of the same bends on the edges of your material what would be a good machine to use?

Back 46

The bar folder