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Comprehensive Reviews Seven Forklift Tyres Non-normal Wear
- Jan 18, 2017 -

① under certain loads and driving conditions, Forklift tire has a proper tire pressure, when tire pressure is lower than the standard value when tire radial deformation increases, excessive deflection on either side, so that the Crown grounded on both sides, tire side wall under pressure, tire side wall tension, tire cords in the body to produce large deformations and stresses. Periodic compression, speed of fatigue damage of steel cord, tire ply increasing and relative slip between the tire and the ground, friction heat generated by increased tire temperatures have risen sharply, reduced tensile strength of rubber, loose and partial delamination of steel cord in the event of an obstacle arises when the affected tire. Tread pressure evenly, the shoulder parts wear, the "bridge effect", fetal surface of toothed or wavy. Tread Pocket nails and stones embedded in the road, causing mechanical damage. Tire rolling resistance increases fuel consumption increases. Experiments show that when tire pressure is lower than the standard value of 20%-25%, fuel consumption increased by 20%. When tire pressure is higher than the standard value when Crown Central grounding, tire and road surface contact area decreases load per unit area increased central tread wear. Tire cord by overly done, stress carcass cord, cord fatigue more quickly and cause cord snapped, causing early tire puncture.

II under certain load and tire pressure, speed, frequency of deformation of the tire, tire vibration and tire circumferential and lateral distortion (formation of stationary wave) along with increased heat produced by friction to increase per unit of time, tire performance, fetal surface even ply cracking and flaking, accelerated tire wear and damage.

③ under certain tire pressure, tire overloading its deflection increases stress of cord and cord, easily causing tire wall cord breaks, loose and ply delamination, carcass cords force will exceed the design allowable stress and tire pressure, heat generated increases body temperature, bearing capacity. Also have a worn tire shoulder makes contact with the ground, especially in the face of an obstacle, even a small stone, can also cause crown break. Practice has proved that, in the case of a turn and driving on uneven pavement, when the wheels when the load exceeds 20%, the mileage will be shortened to 35% over at 50%, and 59%; while more than 1 time, shortened by more than 80%.

About road conditions was a great influence on the service life of the tire, it affects the friction of the tires and the ground and tires subject to dynamic loads.

⑤ high temperature rubber tensile strength, elongation and hardness, adhesion strength between cord and rubber, but also accelerates the aging of rubber. For tires at a high temperature, especially the aging of tires, when yaw or roll over obstacles, easily torn tread pattern. Due to ageing of rubber sidewall cracking and sidewall carcass cord and cause serious deformation rubber separation, once the tire part encounter sudden load is very likely blowout.

⑥ When tires are oil, acid and alkali substances and high temperature for long time when tire changes in physical and chemical properties, loading capacity is greatly reduced, also easy to puncture. In addition, cover torn tire seal gas block appears peeling, small rubber tires appear shed, and a carcass cord and rubber out and so on. Because oil rubber patches cannot be compatible, even tire damage wound was small, also lost the possibility of repair.

⑦Due to the different distribution of front/rear axle load, wheel and steering wheel the working characteristics and differences in road conditions, tire wear is not consistent, if the same cars on either side of the bridge has not been replaced with factory, tires of the same size, structure, levels and patterns, you can accelerate tire wear.

⑧In use, if not pay attention to reasonable and regular tyres bear the load caused by the transposition is not uniform, and accelerated tire wear.