Thursday, 16 July 2020

Components used in Tyres

                                                     Components used in Tyres


There are many as 60 ingredients (Raw Materials) which go into making of a pneumatic rubber tyre. Normally, it looks very simple and seems its very easy to make a tyre. In practicality its the other way around. There are rubber compounds such as Polymers, Fillers, Softeners, Andidegradents, curatives and Reinforced materials such as Nylon, Polyester, Rayon, Aramid, Steel and Bead Wire.

However, the tire compounder knows how to adjust the property of the compounds as per the performance areas. The wet and snow tyres do not perform well in the chip and tear areas or are not as fuel efficient. So all these areas have to be defined to the compounder so that an apt product is produced which suits the terrain. The compounding of OEM as well as replacement tyres are engineered and balanced to meet their performance criteria. The compounding also has to be cost competitive for the company.


Rubber Compounds:
Polymers: are the backbone of rubber compounds. They could be of natural or of synthetic rubber.
Fillers: The most common filler is carbon black although other materials, such as silica, are used to reinforce the compound by giving compound some unique properties.
Softeners: Petroleum oils, pine tar, resins and waxes are all softeners that are used in compounds principally as processing aids and to improve tack or stickiness of unvulcanized compounds.
Antidegradents: Waxes, antioxidants, and antiozonants are added to rubber compounds to help protect tyres against deterioration by ozone, oxygen and heat.
Curatives: During vulcanization or curing, the polymer chains become linked, transforming the viscous compounds into strong, elastic materials. Sulfur along with accelerators and activators help achieve the desired properties.

Reinforced Material:
Nylon: Is used in forming plies on the crown of the tyre as well as in the body part.
Polyester: Its used as radial body plies and some limited application as body plies.
Rayon: Its used as body plies as well as in belt reinforcements. Its also used in some run flat tyres.
Aramid: Its stronger than polyester and nylon material and can be used as an alternative to steel cords.
Steel: Its a steel cord coated with brass that has been drawn, plated twisted and wound into multiple filament bundles. Its basically used as the principal belt ply material used in radial passenger car tyres.
Bead Wire: Its a carbon steel wire coated with bronze that has been produced by drawing and plating. Its placed on two sides of the tyres as hoops which enables the tyre to be firmly fixed on the rim.

Please drop in your comments and let me know what should be my next topic for you.


3 comments:

  1. very informative thank you sir

    ReplyDelete
  2. please write your next blog on radial passenger car tyres

    ReplyDelete
  3. also please write about racing wet/dry tyres

    ReplyDelete