Automatic rubber roller: the key to the quality of automatic rubber roller
The elasticity and hardness of the automatic rubber roller are the key to the inherent quality of the rubber roller. The elasticity and hardness that we usually measure are only the static value of the rubber roller, but can this value be maintained under pressure and draft?
According to observations, it is found that there are differences between elasticity, hardness and dynamic conditions under static conditions. This is mainly due to the support and friction of the roller during the drafting process of the rubber roller. Tangential deformation. This squeezing prevents the rubber roller from deforming and asymmetrical, thereby delaying the elastic recovery of the automated rubber roller. In particular, the untreated rubber roller has low hardness, large surface friction coefficient and severe asymmetric deformation. This always reflects the poor elasticity of some rubber rollers under pressure and draft. When the speed increases, the situation becomes obvious.
In addition, the inner structure of the automated rubber roller also affects its elasticity under dynamic conditions. At present, most economically used untreated rubber rollers are double-layered. Some rubber rollers have an inner layer hardness above A85 and a sleeve difference of 1.5mm. The firm layer of the rubber roller is made of cloth. This kind of rubber roller is easy to damage the inner layer of the rubber roller during the production process. The defects of the inner layer will cause the rubber roller to have local elasticity and hardness. In static measurement, it is impossible to cause internal problems. But it will react after pressurization. The inner layer of the automatic rubber roller has high hardness and poor elasticity. After pressing, the elasticity of the rubber roller surface decreases and the hardness increases.
The difference between the automatic rubber roller sleeves mainly affects the inner circumferential stress of the rubber roller. Under the action of circumferential stress, the rubber roller always maintains a stress gradient in the internal structure of the rubber roller, and the stress gradient gradually increases in the radial direction of the loss. Eventually, the macromolecular structure is destroyed and the molecular chain loses flexibility, which causes the rubber roller to increase in hardness and decrease in elasticity.
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The elasticity and hardness of the automatic rubber roller are the key to the inherent quality of the rubber roller. The elasticity and hardness that we usually measure are only the static value of the rubber roller, but can this value be maintained under pressure and draft?
According to observations, it is found that there are differences between elasticity, hardness and dynamic conditions under static conditions. This is mainly due to the support and friction of the roller during the drafting process of the rubber roller. Tangential deformation. This squeezing prevents the rubber roller from deforming and asymmetrical, thereby delaying the elastic recovery of the automated rubber roller. In particular, the untreated rubber roller has low hardness, large surface friction coefficient and severe asymmetric deformation. This always reflects the poor elasticity of some rubber rollers under pressure and draft. When the speed increases, the situation becomes obvious.
In addition, the inner structure of the automated rubber roller also affects its elasticity under dynamic conditions. At present, most economically used untreated rubber rollers are double-layered. Some rubber rollers have an inner layer hardness above A85 and a sleeve difference of 1.5mm. The firm layer of the rubber roller is made of cloth. This kind of rubber roller is easy to damage the inner layer of the rubber roller during the production process. The defects of the inner layer will cause the rubber roller to have local elasticity and hardness. In static measurement, it is impossible to cause internal problems. But it will react after pressurization. The inner layer of the automatic rubber roller has high hardness and poor elasticity. After pressing, the elasticity of the rubber roller surface decreases and the hardness increases.
The difference between the automatic rubber roller sleeves mainly affects the inner circumferential stress of the rubber roller. Under the action of circumferential stress, the rubber roller always maintains a stress gradient in the internal structure of the rubber roller, and the stress gradient gradually increases in the radial direction of the loss. Eventually, the macromolecular structure is destroyed and the molecular chain loses flexibility, which causes the rubber roller to increase in hardness and decrease in elasticity.
More information pleasae contact us for free!
