SEMINAR-5 TIRE TECHNOLOGY

8/7/2019 SEMINAR-5 TIRE TECHNOLOGY

http://slidepdf.com/reader/full/seminar-5-tire-technology 1/16

TIRE TECHNOLOGY



INTRODUCTION

1) What is tire? Definition.

2) Functions & Application of tire

3) Tire components & their function4) Types of tires

5) Raw material & compound design

6) Manufacturing Processes

7) Quality control & testing

S

E

M

I

N

A

R

1

S

E

M

I

N

A

R

2



What is tire? Tire can be explained in many ways:

± Geometrically

± Mechanically

± Structurally

± Chemically

± Generally

Broadly tire is defined as: The pneumatic tire is a

toroidal, high performance polymeric composite,

which exhibits characteristics of a flexible-membrane

pressure container providing load carrying capability,

cushioning and road handling abilities, transmits

driving and braking torque, cornering forces and

performs all functions essential to locomotion.



FUNCTIONS OF TIRE

Provide Load Carrying Capacity Provide Cushioning and Dampening

Transmit Driving and Braking

Provide Cornering Forces

Provide Lateral and Dimensional Stability

Resist Abrasion

Generate Steering Response

Have Low Rolling Resistance

Provide Minimum Noise & Minimum Vibration

Be Durable throughout the Expected Life Span



TIRE COMPONENTS & THEIR FUNCTION




Tread

RIBS

Grooves

Side Walls

Plies

Liners

Breakers

Chafers

Bead




Beads insulation

Bead wrap

Bead filler/apex

Belts



DIMESIONAL PARAMETERS





TYPES OF TIRES1) Bias Tires 2) Bias-belted Tires 3)Radial Tires

Reinforcing cords

extend diagonally from

head to head

Angle of cord path to

centre-line is in range of 54-63o [high]

They run in opposite

directions in each

successive layer




Consists of basic body

plies with two or more

belts between tread

rubber and carcass.

Carcass angle : 58-61o

Belt angle : 50-52o

Belt reduces

circumferencial and

lateral deformation duringtire service




Consists of ply cords

running in radial direction

Inextensible belt of

several layers of cords in

the circumferentialdirection

Angle of belt-cords is

16-21o

Radial orientation of carcass cords results in a

flexible side-wall which

act independently of belts



Differences

Ground pressure between

the tyre contact area and

road varies greatly from

point to point

Fairly constant ground

pressure throughout the

contact area

Intermediate properties

compared to bias and

radial

Unnecessary wear and the

generation of heat

Wear and heat

circumvented due to design

-do-

Cost is cheap Cost is high than other two Intermediate [unpopular]





Disadvantages of Radial Tyre

Harsh ride at speeds below 20 kmph

Heavier steering at low speeds and when

parking Higher Cost



Thank y u

Documents

SEMINAR-5 TIRE TECHNOLOGY