Sufficiently relevant to the present time are retreaded tires. No need to buy new tires if you like, even if worn out completely, the bus has no significant damage to the carcass. That framework is the basic element of any tire. Durability frame is 2-3 times greater than the tread, so when the tire tread wear appropriate to recover by putting a new tread. Because of this possibility of multiple recovery of the tread of the tire. This is an economic alternative to purchasing new tires. Today retreaded tires in demand so that every second truck tire, used in Europe, is restored!

Currently, LLC Gnivansky tire-repair factory "is one of the leading companies producing goods retreaded tires. Facilities are equipped with high-tech equipment, has a wide range of technologies for restoration and repair of tires. Competent experts, allow us to cope with the tasks of reconstruction and repair of tires. The restored bus at our company gets a guarantee mileage 100.000 km, is at 30-40% cheaper than new!
• Vosstanovlenieprotektora represents an economical alternative to purchasing new tires, allowing transport companies to extend the life of the tire. Qualitative frameworks truck tires can be retreaded several times, depending on their application. Expenditure on the bus during its total service life - this is the only real indicator. Variety of styles tread belt and innovation in the field of materials and in the field of technology and equipment that allow you to save a retreaded tires all the advantages of the new tire brands, as well as allow you to choose the type of tread that best suits the conditions of service, quality and type of road coverage. OOO Gnivansky tire-repair factory "has the ability to recover almost all the tires of vehicles, namely: different types of trucks, vans, trolleys, buses, evrotyagachey, semi-trailers. OOO Gnivansky tire-repair plant produces retreading truck tires cold-welding on. The essence of this modern method is that the new pre-cured tread, and then finally cured by using special chemicals that activate the process of vulcanization of worn-out skeletons at a lower temperature than with the traditional "welding on." At this temperature (about 100 0 C) excludes secondary vulcanization and damage to the frame at the expense of weakening ties between rubber and cord. Otherwise, this method is called "cold curing". Remold, being made from specially selected rubber compounds, possesses all the necessary properties to ensure his long and reliable operation, virtually conceding the new tire. Today, all this technology can be seen at our factory.

Technology recovery bus

The process of retreading using cold process consists of the following:
1. Initial inspection - perhaps the most important part of the recovery process. Skeleton - a supporting structure in the recovery of tires, so it is important to separate the fit to the restoration of frames. Verification is done visually and is divided into:
· Test boards;
· Check the sidewall;
· Check bits;
· Marking lesions;
· Filling out the accompanying card working.
2.Sherohovanie. Buffing device to remove the layer of material prior to the tread and gives the frame shape, size and surface texture, which are necessary to impose a new tread. A device for buffing operates on the principle of the lathe. The frame is mounted in special clamp, inflated with air to acquire firmness and elasticity and unwound with a clamp.
Powerful Rough knives, rasps remove the tread compound. The frame is handled perfectly round for a better contact with the tread, and to better balance the tires. In this case it is treated, according to copies up to a predetermined profile, width and radius. These parameters are defined by programs laid down in the automation device buffing, and depend on the size of the wheel tread of the restored and the company - the manufacturer.
Surface roughness should be as shallow as to ensure the maximum number of points of vulcanization and thus good adhesion (adhesion). At this stage the final rejection of the frame, as buffing sometimes reveals internal defects in tires, not seen by visual inspection.
3. Ultrasonic inspection framework.
For a quick and convenient cycle machine scans the frame from side to side, not missing not a single injury. All visible lesions and suspicious areas identified by NDI ® properly inspected, treated and repaired. This increases reliability, and extended recovery of the tread in the future.
4. Cleaning and preparation of the tire to the recovery -
performed only highly qualified personnel and only the best materials!
Since vprotsesse buffing removed not only the protector, but Ipod tread portion (consisting of old, "obsolete" rubber), this layer should recover. You also need an intermediate layer of material that would establish a firm contact between the old frame and new tread. On a layer of rubber applied to high-strength rubber cement ("cement"), made ​​from natural rubber, which reliably pasted a new protector.
5. Preparation of the tread - is cutting the tread strip on the table for a certain length, a desktop docking tread belt; application sandwiched rubber (the same as a tape)
6. Application of the tread - made ​​on the inflated pressure of 1 bar at a temperature of 18 degrees Celsius. The operation consists in the fact that the prepared
frame superimposed tread tape.
7. Packing in the shell - frame prepared with a superimposed tread rubber band is placed mezhdudvumya cameras shells from kotoryhvykachivaetsya air. This is achieved by a dense szhatiekarkasa and protector.
8. Vulcanization - key factors are the exact ratio of curing time, temperature and pressure. All parameters are passing the process in an autoclave
adjusted automatically. Ready for processing and packaged in the camera-shell frames with glued-protectors are placed in an autoclave and at the same time
connected to a vacuum pump, which continues to suck the air out of the shell.
At the same time in the autoclave creates a high pressure of at least 6 bar. Thanks to this technology acceptance protector literally pressed into the frame, and exactly matched the temperature (98 - 105) degrees Celsius completes the process of chemical bond together.
9. Final inspection - carried out until the tire is still hot, since it is easier to detect possible defects vosstanovleniya.Finalnaya inspection is performed by the visual method.
We would be pleased to have the opportunity to work with you!