TYRES

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Today we are going to talk about tyres, often not given so much of importance but still they are an integral part of about every industry of modern era.

History of tire

1493-1495  Discovery of rubber by Christopher Columbus.
1770Application of rubber for erasers and waterproof clothing.
1770Application of rubber for erasers and waterproof clothing.
1839Discovery of a rubber vulcanization method by Goodyear(USA).
1885Invention of the 4-stroke petrol engine by Daimler (Germany).
1888Invention of the pneumatic tire by J.B. Dunlop(UK).
1896Fixing of tires to automobile wheels first began.
1900Use of cotton cord in tire manufacture.
1905Use of bead wire reinforcement.
1920Use of carbon black for tread rubber reinforcement.
First use of cord fabric in tires.
1931Industrialisation of synthetic rubber by Du Pont(USA).
1937First use of rayon for tire cord.
1942First use of nylon for tire cord.
1947Invention of tubeless tire by B.F. Goodrich(USA).
1948Invention of radial tires by Michelin(France).
1962Invention of polyester tires by Goodyear(USA).
Spread of studded tire in North America.
1971Spread of steel radial tires for passenger cars.


Tires - Basics
  The function of the tyre is to cushion the wheel from the road and to provide grip and traction.
  • Beads are rings of steel wire in rubber at the inner edge of the tyre.
  • Body plies are made up of fabric and cords wrapped around the beads and extending                 over the inside of the tyre below the rubber surface.
  • Tread is the ridged surface that is in contact with road.
  • Sidewall is the part of the tyre from the beads to the tread
  • Belts run around the tyre below the tread to strengthen both body plies and tread.
  • Liner is a thin layer of rubber bonded to the inner surface of the tyre.


Now that the terms are explained, let us go to the manufacturing..
This MICHELIN TYRE video gives a perfect know how of what is exactly done, hope you enjoy it.

                                        



Tyre Construction
The tyre may be made of natural rubber or neoprene (synthetic).
Tyre cords, which support the tread, may be made of rayon, nylon, polyester, aramid, Kevlar or fibreglass.
Steel cords are often used in the belt section.
There are steel wires also in the beads.
The bead provides strength to prevent the tyre opening up and coming off the wheel.







  • Tyre Tread Compounds


    • Tyres contain 3 or 4 different rubbery materials. One is natural rubber (juice of a tree) coagulated using acetic acid, smoked and dried. The others are all made from oil called polymers.
    A typical passenger car tyre tread compound contains styrene-butadiene co-polymer as base, around 35% carbon black to reinforce it, and some silica. These increase the abrasion resistance, tear strength, and cut resistance. 

    For more understanding, go to-->Tyres.Wordpress 

    HOW ITS MADE (SOLID TYRES)





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