Grinding Head For Tyre Retreading Equipment Necessary Small Part

Concepts of cold retreading:

1, cleanness and dry of casing

Before retreading, outer and inner surface should be cleaned for good adhesion strength. Drying is also essential because the water in casing would affect the retreading quality.

2, tyre inspection

Not all the used tyres can be retreaded, different standard for different conditions. Some defects can be found directly by the experienced operator, but some inner ones can only depend on the inspection of equipment and devices.

3, buffing

Obtained tire surface with a certain profile and adhesion after buffing. It should be stressed that this is a crucial process, because unqualified tire size, roughness, or roundness would affect the quality of retread tires.

4, skiving

Buffer can not grind the pattern grooves and the concave parts caused by using, so can only use hand-held pneumatic or power tools with special grinding wheel. In addition, the uncertain damage can be confirmed exactly and remarked.

5, cement

In order to prevent the grinding tread surface to be oxidized in the long-time exposure, and to provide operating viscosity to next adhesion step, the operator paint a thin cement layer on the polished surface. Spray cement has been eliminated in some advanced plant, because the wet cement would affect the adhesive property and has flammable risk.

6, repairs

Cuts repair, fill, paste patch liner depend upon complete tools in this station. By scientific design, high strength, light weight, resistance to flex, the patch liner can be prefabricated into a variety of models. Right models with correct operation lead to reliable quality. And it should be noted that all the work is operated manually, so need the operator have proficient skills and responsibility.

7, extruding

Using softens rubber fill tire grooves and surface pits. The traditional way is to fill the pits by hand, one by one, using the extruding gun with heating function. But advanced larger factories use cold feed extruder reshaping the adhesive to a certain width and thickness, and then extrude onto the prepared casing surface. Compared with manual filling, the latter tire has smooth surface, reduced air probability when bonding, more efficient, and even eliminates the spraying cement operations.