1, In a certain load and driving conditions, forklift truck tyre has a suitable tire pressure, the test shows that when the tyre pressure is less than the standard value of 20%-25%, fuel consumption increased by 20%. When the tyre pressure is higher than the standard value, the center of the crown is grounded, the contact area between the tyre and the road is reduced, the load on the unit area is increased, and the wear in the middle of the crown is intensified. The tyre cord is over stretched, the cord stress is increased, the tire cord fatigue process is accelerated, and the tyre cord is broken, causing tire early tyre burst.
2, In certain loading and inflation pressure, the increase of speed, frequency, deformation of the tyre carcass and tire circumferential vibration and lateral distortion (stationary wave) increased, unit time internal friction and heat generated increases, the decline in the performance of the tyre, and even ply rupture and tread spalling accelerate the tyre wear and damage.
3, In the tire pressure, tyre overloading the flexural deformation increases, stress increases cord and cord, easilycausing sidewall cord broken, loose and ply delamination, cord force will exceed the allowable design stress and tire ground pressure, heat generated increases the matrix, temperature, bearing capacity decline. At the same time, because of the contact between the shoulder and the ground, especially when the obstacle is encountered, even a small stone will cause the crown blasting. The practice proves that when the tyre load exceeds 20%, the mileage will be shortened by 35%; when the tyre load exceeds 80%, the distance will be shortened by more than 59%; when the tire load exceeds 50%, it will be shortened by more than 1.
4, The road condition has a great influence on the service life of the tyre, it affects the friction of the tyre and the ground and the dynamic load of the tyre. When the tyre is subjected to grease, acid and alkali corrosion and long time high temperature, the physical and chemical properties of the tyre will change, the carrying capacity will be greatly reduced, and the tyre will be easy to blow out in use. In addition, the oil corrosion of the tire will appear gas block spalling, a small area of rubber shedding of the tyre, as well as the carcass cord and rubber separation phenomenon. Because the patch is not compatible with the oily rubber, even the damage to the tyre is very small, and the possibility of repair is lost.
5, The high temperature will make the rubber tensile strength, elongation and hardness decreased, the adhesive strength between rubber and cord decreased, but also accelerated the aging of rubber. Because of the aging of the wall rubber and cracks and serious deformation of the tyre wall, the carcass ply cord is separated from the rubber. Once the tyre meets the sudden load, it is likely to have a tyre blowout.
6, Due to differences in characteristics of front and rear axle load distribution is different, the driving wheel and the steering wheel and different road conditions, the wear condition of the tyre is not consistent, if both sides of the same axle without replacement of the same plant, the same size, structure, level and pattern of the tyre, the tire wear will accelerate.
7, In use, if you don't pay attention to reasonable collocation and regular transposition, resulting in uneven tyre load, will also accelerate tyre wear.