7.10: Springs

Question 1

Answer 1

high carbon alloy steel with high strength requirements

Question 2

Answer 2

Length under load

Question 3

Springs are made from _____________________________

Answer 3

Springs are made from high carbon alloy steel with high strength requirements

Question 4

Wear check on a spring should include ____________

Answer 4

Wear check on a spring should include length under load

Question 5

How can overheated springs be identified?

Answer 5

Overheated springs can be identified by a change of colour. Such as a blue sheen

Question 6

What do helical springs suffer from?

Answer 6

Helical springs suffer from Float. The spring vibrates and it loses performance

Question 7

What are the 3 things to look for when inspecting springs? (Static inspection)

Answer 7

Static indications when inspecting.

1. Free height measurement
2. Parallelism
3. Squareness

Question 8

How would you test for fatigue in a spring?

Answer 8

Test for fatigue, spring returns to its original free length

Question 9

How should disc/belleville springs be inspected?

Answer 9

Disc/bellevile springs should be inspected for condition and correct assembly

Question 10

Answer 10

Option A: High carbon or alloy steel with low working stresses

'’Springs are made from hardended (high carbon) or alloy steel, and work under low stress to keep them within the elastic range’’

Question 11

Answer 11

Option A: length under load

Question 12

Answer 12

Option A: high carbon alloy steel with high strength requirements

Question 13

Answer 13

Hard drawn wire

Question 14

Answer 14

loss of elasticity

Question 15

Answer 15

can be caused during the shot peening process and should not be rejected

Question 16

Answer 16

radial force

Question 17

Answer 17

length under load

Question 18

Answer 18

Nickel chromium

Question 19

Answer 19

constant spring

Question 20

Answer 20

High carbon or alloy steel with low working stresses

Springs are made from hardened (high carbon) or alloy steel, and work under low stress to keep them within the elastic range

Question 21

Answer 21

Compression spring

Question 22

Answer 22

straight line

Question 23

Answer 23

hard drawn wire

Question 24

Answer 24

high carbon alloy steel with high strength requirements

Question 25

Answer 25

overheating

Question 26

Answer 26

Beryllium Copper

Question 27

Answer 27

1/ length, strength and squareness

Question 28

Answer 28

2/ Test the spring returns to its original free length Fatigue Test of a spring - Spring Should return to it's original FREE LENGTH

Question 29

Answer 29

2/ Free height measurement, parallelism, and squareness

Question 30

Answer 30

3/ the change in the colour

Question 31

Answer 31

2/ visually for condition and correct assembly

Question 32

Answer 32

c/ the spring vibrates in such a way that it loses performance

Question 33

If one unit of compressive force is applied to a spring within its elastic limits what should be the effect?

Answer 33

the spring will strain a proportional amount ‘’Deflection graph for helical wound spring is LINEAR = DEFLECTION IS DIRECTLY PROPORTIONAL TO LOAD APPLIED''

Question 34

Are Compressive springs wound left or right handed?

Answer 34

Compressive springs are wound left or right handed

Question 35

What load are spring hooks subjected to? (a) Tension (b) Compression © Twisting

Answer 35

(a) Tension

Question 36

A spring should be inspected for correct? (3)

Answer 36

length, strength and squareness

Question 37

How do we test springs for fatigue?

Answer 37

FATIGUE TEST - Spring should return to its original FREE LENGTH

Question 38

Torsion bar springs are?

Answer 38

Cylindrical

Question 39

Which material is best for making springs which need to operate at high tensile loads?

Answer 39

Music wire

Question 40

A load deflection chart of a normal spring operated within its elastic limit would show

Answer 40

A linear path/proportional

Question 41

A torsion spring is often used to control what type of input to a door lever?

Answer 41

Twisting load

Question 42

Evenly ground helical springs have

Answer 42

non linear

Question 43

Helical springs sometimes suffer from ‘Float’, what is this?

Answer 43

The spring vibrates in such a way that it loses performance