RETREADING PROCESS
There are two types of retreading methods for a tyre:
2.1. Mould cure process
2.2. Pre cure process
2.3. Fully Computerized tyre retarding process
2.1. MOLD CURE PROCESS
In the ‘mould cure’ process, the uncured rubber is applied to the casing to form the tread and sidewalls, using an extrusion machine. Once this is complete, the rubber is cured (or vulcanized), during which it is heated to 160°C, in order for the newly applied material to bond with the existing casing.
2.2. PRE CURE PROCESS
In the ‘cold cure’ process, a pre-vulcanized tread, including the tread pattern, is supplied to the retreaters, who then apply it to the casing on a building machine. Once the various checks have been made, the built tyres are placed in batches into an autoclave at 100°C. In both ‘curing’ processes, once the tyre has been reconditioned, a final inspection is made to check for any defects which could compromise its safety.
2.3. FULLY COMPUTERIZED TYRE RETARDING PROCESS IN FORTUNE TIRE TECH LIMITED
It is applicable for both mould cure & pre cure process. Here operations are done by electrically heated and PLC controlled automatic systems to cure the tyre. Fortune offers the highest quality of retreading services in India. Fortune uses latest German and Italian retreading equipment for Radial and Bias's tyre retreading such as Laser Shearography, Nail Hole Detector and Non-Destructive Tester for through inspection of your tyre casing. Fortune uses the worlds latest computerized tore buffer and trade builder to give you retreaded tore exactly similar to a new tyre. Our process 9 involves customized programming for each tyre. The material used for retreading is comparable to world standards to give you a retread comparable to the world’s best.
TYRE RETREADING PROCESS IN FORTUNE TIRE TECH LIMITED
The initial steps in retreading a tyre are the same regardless of which retreading system is used. These main steps are 1. Primary Inspection. 2. Buffing 3. Skiving 4. Cementing 5. Filling 6. Tread Building & Curing 7. Final Inspection 8. Trimming and Painting Retreading of tyres process 1. Inspection 1.1. Tyre manual inspection 1.2. Laser Shearography 1.3. Nail hold detector 2. Minor repairs 2.1. Deluxe spotter 2.2. Section mould 3. Buffing 4. Skiving 5. Cementing 6. Filling 7. Tread Building 8. Curing 8.1. Enveloping &rimming 8.2. Tyre curing process 8.3. De-enveloping 9. Final Inspection 10. Tyre painting 11. Delivery
ADVANTAGES AND DISADVANTAGES OF TYRE RETARDING ADVANTAGES OF TYRE RETREADING:
The retreaded tyre is safe, particularly in countries where regulation for type approval of retreaded tyres is mandatory. For instance, ECE regulations 108 (for car tyres) and 109 (for commercial vehicle tyres) are mandatory in U.K. with effect from 2004 and across the EU from 2006. These regulations require the quality, integrity and performance of the retreaded tyres to be at least at par with that of the new tyres Retreaded tyres make definite economic sense since retreading cost is less than half that of the original tyre. In case of commercial vehicles, where retreading gives multiple tyre lives, there is still more saving Retreading a tyre means, producing one less new tyre, thus saving substantially on resources such as oil. A car tyre retread requires about 20 litres less oil than a new tyre to be produced. For a truck tyre, the saving is about 70 litres of oil per tyre retreaded. Tyres are made up of synthetic rubber, which is petroleum based. If a tyre is retreaded, then there is a lot less petroleum oil used. Larger sizes especially truck sizes are popular in retreads because the truck tyre structure or carcass is expensive, so it made sense to recycle a larger tyre than to scrap it. Retreads will never become popular for the reasons mentioned above, in the last couple of months the price of the budget makes has been on the increase which could see some motorists having no choice but to turn to the cheaper option of retreat or part worn tyres. The other advantage of retreads is because they are essentially recycled old tyres there would be fewer tyres going to land fill or scrap. They are a lot more eco-friendly. Retreaded tyres, which in principle are used almost exclusively in heavy vehicles like trucks or buses, began to be a trend due to the economic crisis, as they are cheaper than a new wheel. Thus resulting in substantial savings in maintenance 75 costs as high as the car is changing the wheels.
DISADVANTAGES OF TYRE RETREADING:
As for disadvantage of retreads, it is difficult to point to any relevant because manufacturing processes that are required make the quality of this product is the same as that of new tyres. What we can target as a disadvantage of retreaded tyres is that their lifespan is shorter than the new wheels, precisely because of the nature of their origin. In the ‘cold cure’ process, a pre-vulcanized tread, including the tread pattern, is supplied to the retreaders, who then apply it to the casing on a building machine. Once the various checks have been made, the built tyres are placed in batches into an autoclave at 100°C. In both ‘curing’ processes, once the tyre has been reconditioned, a final inspection is made to check for any defects which could compromise its safety.
CONCLUSION
The retread tyres life is almost equivalent as of the new tyre. But the expense of retreading is only 30 to 40% cost of the new tyre. Retread is extremely environmentally friendly. Firstly, the production retreading saves 15 gallons of oil and manufacture of the process the retread required 7 gallons of oil it is less than a new tyre. Secondly, retread tyre sold are almost exclusively manufactured with in territory itself, which means they don’t have to be shipped from another side of the world, unlike many budget new tyres a high proportion of which are manufactured in Germany & Italy. Retreading is also a best practical environmental option for tyre recycling. Every retread used means one less new tyre saving in natural resources. It also means that less tyre ultimately has to be burned, thereby reducing pollution, In fact, a recent a study by the Environmental. An often named advantage of pre-cure retreading is the appearance of the retread tyre which is difficult to distinguish from a new tyre, but a bond line can be visible on the side wall. The look of a retread doesn’t tell you any thick about its safety & performance. A Retarded tyre as good as a new one
Comments