5 Jun Initial Inspection. The first part of the retreading process is to inspect the tyre to see whether it meets with our stringent quality specifications. Tyre Retreading by Hot Retreading Process. S. Ajeeth Kumar*. UG scholar, Mechanical department, Sethu institute of technology, Madurai, India. There’s a reason STTC only uses MRT—no other inspection and retread process utilizes Michelin new-tire technology, materials, and quality standards to.

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This process involves three further thorough examinations: Roller Covering Extruder Plant. Hot retreading also allows extensive repairs to be carried out on the tyre carcass e. In the tyre retreading process, the uncured cushion gum compound has to vulcanize while the pre-cured tread rubber has to be kept in position. A continuous strip of premium rubber compound is wrapped around the tyre whilst it revolves on an inflatable chuck.

Extruder gun Tire Spotter. Both processes start with the inspection of the tire, followed by non-destructive inspection method such as shearography to locate non-visible damage and embedded debris and nails.

A wide range of tread types are available, allowing the optimum tread to be selected for the tyre application. Casings fit for retreading have the old tread buffed away to prepare for retreading.

From Wikipedia, the free encyclopedia. By using this site, you agree to the Terms of Use and Privacy Policy. The Department of Transportation requires marking of a “DOTR number” which shows the name of the retreader and when it was retreaded.


Should a minute hole be detected, an arc is produced which stops the machine and alerts the operator to the location of the penetration for the repair to be made.

Retreaading — Tread Rubber In the pre-cure system, the tread rubber has already been vulcanized with the new tread pattern design. Building During the Building process, new tread material is applied, or stitched, to the casing using a patented computer-controlled process. A study estimates that then current generation of commercial vehicles tires to last up tomiles if they’re retreaded two to three times.

Therefore the tire is placed into an envelope which presses the precured tread uniformly on the cushion gum and the casing Application of Curing Bag, Flap retreding Curing Rim The correct size of curing bag and flap is inserted into the tyre according to the tyre ture. This increases your work place safety and productivity. Some applications for retreaded tires are airplanes, racing cars, buses and delivery trucks.

As part of this regulation all tires must be tested according to the same load and speed criteria as those undergone by new tires. Autoclave for all Industries.

Skiving is performed to remove the loose rubber, ply and injury on the surface after the buffing operation. The Land Fill Directive of banned tires in landfills inpdocess banned shredded tires in Labour costs per retread are higher than for hot-retread truck and bus tyres.

This step guarantees that the casing is intact and in good condition. In order to locate any minute holes within the inner wall, the casing is subjected to a penetration detection process which involves high voltage electricity being passed through the tyre whilst it is rotated. The combination of heat, time and pressure ensures that the new rubber is correctly vulcanised, resulting in a tyre with the same tread pattern and depth as the matrix specification for which it was intended. With professional planning from Newera engineers, you can be assured of workstations designed to maximize output and ease workflow.


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Tyre Retreading Process 1. Tire Tread and Tire Track Evidence: Tyre Retreading Machinery Process Monorail.

The pre-cured tread rubber is then applied with the building machine. Final Inspection The final inspection is done to ensure that the quality of regreading retreaded tyre is good. If this is not done, severe rust, separation and steel cable looseness could take tyre out of service. Previously prepared tread strip is applied to tire casing with cement.

Managing closed-loop supply chains. This test detects any inherent separations within the casing which are impossible to detect with the naked eye.


Valves, Sensors and Valves Accessories. Initial Inspection The first part of the retreading process is to inspect the tyre to see whether it meets with our stringent quality specifications. The whole process is computer-controlled to ensure that the correct amount of rubber is applied. If the tyre is not retreaded after its first use, this amount of raw materials would be lost through disposal.