Routine maintenance points of aluminum foil rolling mill and solutions to common problems
2017/1/5 17:27:41
As the aluminum foil rolling machine working longer, VC stick frequently used, it must be on the VC hydraulic control, or will directly affect the aluminum foil plate shape quality, oil pressure is too large or too small, will strip production Quality, only the amount of oil can always ensure that the strip is straight and beautiful. At the same time in the aluminum foil production process, often there will be asymmetric plate defect, which requires a variety of control methods used in conjunction with, such as hydraulic bending stick, roll tilt, roll cooling system, to control the shape , To improve the existing production process, increase the VC pressure, art makes the entire control window can be adapted to a larger range to improve the flatness of the strip to reduce the emergence of tolerances.
In order to improve the production efficiency and quality of the aluminum foil rolling mill, it is necessary to introduce a variable convexity support roll, which is an improvement on the conventional production process, reduces the roll bar to the parabolic shape deviation adjustment ability development, Of the variable crown control. Currently the most common variable convex support roll mainly full-length variable crown support roller and can change the diameter of the end, the middle part of the width of the adjustable flat support roller. These two types of support roll production requirements are inconsistent, the need to choose according to the actual situation of the production site.
In the aluminum foil production process, the more common problem is the electrical fault, hydraulic failure, mechanical failure, these failures can be equipment maintenance, routine maintenance and other measures to solve. However, if the aluminum foil rolling mill in the production of broken belt problems, it will directly affect the quality and efficiency of aluminum foil, and enhance the cost of the manufacturer.
Analysis of the Causes of the Broken. First, coiling tension instability. When the strip is in the rolling mill, the coiling tension is too small, which leads to the accumulation of the strip, which in turn leads to the problem of breaking, and the tension is too great, exceeding the limit of the strip due to insufficient hardness of the strip. Causing a break-band problem. Second, the coiler speed and roll speed is inconsistent. When in the normal production, the coiler speed and roll speed is inconsistent, will be due to the role of tension occurs with the belt off. Third, the man-made operational reasons. When the normal production of aluminum foil, because the operator's unskilled operation, there is no control of a good shape and rolling mill speed, but also easy to make strip off.
The Main Countermeasure of Reducing the Belt. First, designers should strengthen the design of the mill performance, according to the production needs of the strip, a reasonable set of winding tension, to ensure the rationality of equipment parameters. Second, according to the scene of the production situation, a reasonable adjustment of the coiler speed and roll speed, you can change the motor drive constant and corrective action to compensate for improper method to reduce the belt problem. Third, we must strengthen the training of staff production skills, develop a sound production management system, to enhance staff awareness of safety, good routine maintenance work, to be able to adjust the parameters of the strip according to the rational production steps.
To sum up, you want to improve the efficiency of aluminum foil mill, we must understand its working principle, from various aspects to do routine maintenance work, through measures to reduce the strip with the problem, so as to effectively enhance China's aluminum foil production enterprises Competitiveness.