The reason why the aluminum foil is curled

Update:24-11-2018
Summary:

Post-processing of aluminum foil is a crucial part of a […]

Post-processing of aluminum foil is a crucial part of a company, and it is related to an aluminum product yield and corporate profit point. The higher the yield, the greater the profit point of the company. Of course, the yield rate is the control and standardization operation of every link, and it also requires excellent equipment and responsible leaders and employees.

There are usually two types of blades for aluminum foil slitting. One is a round blade, and the other is a blade type blade, also called a razor. The razor blade is fixed at one point and is passively cut and cut with material winding. The aluminum foil is actively slit, and the faster the speed, the smaller the resistance of the blade. The slower the opposite. The thickness of the blade corresponds to the resistance.

The thicker the blade, the greater the resistance. The thinner the opposite. Since the razor blade is fixed and fixed, the cutting edge is prone to fatigue and heat when the blade is in contact with the foil and the thin material. Therefore, after a period of time, the blade edge is not sharp, and the blade is blunt and tearing occurs. The raw edges are inevitable. Of course, these are also related to the angle of cut. The choice of a good razor blade is the first choice to solve these problems, ceramic blades should be the first choice.

In high-speed slitting, the heat dissipation coefficient of the steel blade is poor. The higher the slitting speed, the larger the friction coefficient, and the more heat is generated, the more heat is trapped in the steel blade. During the slitting process, the foil and the blade friction generate heat.

A part of the heat is dissipated at room temperature with the winding, and the other part of the heat remains on the steel blade, and the accumulated heat is obtained. The longer the cutting time, the faster the speed. High, the more heat left on the blade. In this way, the blade conducts heat to the foil, which forms a heat transfer to the foil. Since the blade has a high temperature and then contacts the foil, a dust stick is generated, so that the blade makes sharpness and forms a powder and a curled edge.