Hand Tools Part B

Question 1

What are pullers used for?

Answer 1

Pullers are used for: removing hubs, bearings, sprockets and couplings

Question 2

What are two main types of hydraulic jacks?

Answer 2

The portapower and hydraulic jack

These are used to move loads short distances.

Question 3

What are the two main types of cleaning?

Answer 3

Chemical cleaning:
Alcohol cleaning
Solvent cleaning
High pressure water or steam cleaning

Mechanical cleaning:
Abrasive cleaning
Barrel finishing or tumbling
Ultrasonic cleaning

Question 4

What psi should ferrous metals be cleaned at when using abrasive cleaning?

What psi should non ferrous metals be cleaned at?

Answer 4

Ferrous metals - 60 to 100 psi

Non Ferrous metals - 10 to 60 psi

Question 5

What are the main abrasive product used?

Answer 5

Emery - ferrous metals

Crocus - rapid removal of metal or fine polishing

Aluminum oxide - rapid metal removal on ferrous materials

Silicone carbide - polish non-ferrous and ferrous metals when high quality finish is required.

Abrasive papers and clothes -

Question 6

What is the purpose of lapping?

Answer 6

To obtain exceptionally true surfaces and accurate dimensions.

Improves flatness
Improves surface finish and produces very accurate dimensions
Improves wear life on component
Provides sealing surfaces that do not need gaskets

Question 7

What part of a tap does most of the cutting?

Answer 7

Taper or chauffeur.

Question 8

What is the purpose of the flute on a tap?

Answer 8

To provide space for chips to accumulate and a passage for the cutting fluid

Question 9

What is the land of a tap?

Answer 9

The portion of the tap not cut away by the flutes

Question 10

What is a tap wrench used for?

Answer 10

To turn the tap into the hole.

Question 11

What are the 3 taps and there uses?

Answer 11

Taper: used first as it self centre’s in the whole. Can be used on its own if the whole passes through.

Plug tap: use second after taper tap

Bottoming tap: no taper on the end. Used for adding thread to the bottom of a blind hole.

Question 12

What is a serial tap?

Answer 12

Taps used to cut difficult materials

Question 13

What percentage of of the thread is left in the whole?

Answer 13

75%

Question 14

What is the taper on a pipe thread?

Answer 14

3/4 inch per foot and has a 60 degree thread angle

Question 15

What is a perfect fit for a pipe thread?

Answer 15

3-4 threads by hand
3-4 threads with wrench
4 threads still exposed

Question 16

What are the 3 types of dies?

Answer 16

Adjustable split die

Adjustable screw plate die: most versatile because it provides the greatest amount of adjustment.

Solid die nut: used for cleaning threads

Question 17

What is the purpose of a hand reamer?

Answer 17

To make drilled holes more accurate.

Question 18

What are the 4 types of reamers?

Answer 18

Solid reamers
Expansion reamers
Adjustable reamers
Taper reamers

Question 19

What is broaching used for?

Answer 19

Cutting keyways and splines

Question 20

Crocus cloth is used for fine polishing and aluminum oxide is for?

Answer 20

Rapid metal removal of ferrous metals

Question 21

Silicone carbide is suited for

Answer 21

Polishing non ferrous metals