Henan Xinchang Import and Export Trading Co.,Ltd
Aluminum foil in the production of rolling process inevitably will have a certain degree of wear, after research we found that aluminum foil wear has certain characteristics, a simple analysis for everyone.
, in the process of rolling aluminum foil in the metal plastic deformation occurs, continuously generate new surface, and in contact with the unit of high pressure, coupled with the deformation characteristics of high temperature, sliding speed, the roll surface adhesion of metal, especially the phenomenon such as roll wear.When the adhesion between metal and roll, the sliding contact friction between the two is then transformed into internal friction of the metal surface and subsurface shear deformation, so as to change the place of the part with metal adhesive friction state, lead to the change of stress state and metal flow state changes.The result is that the friction increases, the energy consumption increases, the surface of the product is significantly damaged, and the roller is rapidly worn, and the service life is shortened, and the rolling process cannot be carried out normally when serious.
The wear in the rolling process is extremely complex, and metal wear is related to metal materials, surface oxides, processing hardening, processing temperature, speed, lubricant and surrounding environment.In the process of material deformation, the mechanism of wear may be one or several mechanisms at the same time.Moreover, the deformation process itself is changing.When rolling, the roll is repeatedly in contact with the rolled piece, and the surface of the rolled piece into the human deformation zone is constantly changing.In addition, the workpiece after pickling, its surface cleaning, when in contact with the dirt of the surface of the roll, because plastic deformation and the possibility of extending increased adhesion and wear particle peeling, if wear particle height is greater than the oil film thickness, so, particle surface, will be pressure on the surface of the grinding roll role.
The wear type is different due to the contact surface appearance, contact condition and environmental condition.However, it can be divided into two types: mechanical wear and chemical wear.Mechanical wear is a kind of wear process related to friction, abrasive wear, erosion and fatigue.Chemical wear is caused by the erosion of the surface by various active substances and then by mechanical action that causes friction and breakage of these reactants.Different types of wear can occur independently, successively or simultaneously.The wear surface stress is too high, which is the common characteristic of various wear phenomena.
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