Mill Elastic Deformation

The Overview of Rolling Machine Deformation

Rolling is one of the most important and commonly used metal forming processes. It is frequently used to produce cylindrical objects, such as wires, bars, pipes and tubes. When placed between two rotating cylindrical rolls, the metal, which is usually a sheet or plate, is subjected to extremely high pressures. This process often requires a combination of compression and tension, which will cause the metal to deform plastically. This process is called rolling machine deformation.

The rolling machine, also known as a roll mill, is a machine that is designed to roll or form materials into desired shapes. This kind of rolling often causes the metal to deform plastically in an elastic manner. It is the change in shape that is called elastic deformation or elastic rolling deformation. This process is usually used to reduce the size or thickness of materials.

The amount of deformation produced by rolling depends on both the size of the roll and the amount of force applied to the roll. The larger the roll, the more force must be applied to cause deformation, while the smaller the roll, the less force needed. The amount of deformation produced also depends on the ductility of the material being rolled. Materials with higher ductility, such as steel, tend to deform more easily than those with lower ductility, such as aluminum.

During rolling, the rolling material is subjected to extreme temperatures and pressures. The temperature at which rolling occurs depends on the speed of the rollers, the material of the rollers, and the type of lubricant used. The pressure can vary greatly, depending on the size and weight of the material, as well as the speed at which it is rolled. As the temperature of the material increases, its ductility decreases, leading to less deformation.

Due to the large forces used in rolling, a special lubricant must be used to help reduce friction and heat build-up. Besides the type of lubricant used, the size, angle, and speed of the rollers can also contribute to the amount of heat and pressure generated during the rolling process. The rolling force also affects the amount of deformation produced. As the roll force increases, the amount of deformation increases.

The deformation produced during rolling can be beneficial in many applications, such as in the production of pipes, heavy-duty gaskets, and forged products such as axles and crankshafts. Rolling is also used to produce simple products, such as coins and buttons. Rolling produces a smoother surface finish with fewer defects. Rolling is thus an important process in producing quality products.

Roll elastic deformation of rolling mill is a common problem that metal forming engineering industry faces. It occurs when rolling too much material, which can cause the metal to deform due to excessive thickness. This problem can be exacerbated when there are too many passes in the rolling process, because each pass further reduces the materials ability to keep its shape and retain its integrity. To combat this problem, careful measurements must be taken to know when the material is approaching its elastic deformation point.

If elastic deformation is not addressed early enough in the process, it can cause considerable downsizing of the initial material and thus increase losses due to rejections. To prevent this from occurring, it is necessary to monitor the thickness of the material. The easier it is to monitor the thickness, the more effective it can be to prevent elastic deformation. For this, rolling mills can be equipped with intermediate rolls of a small diameter, which allow for the control of the rolling pressure to adjust the thickness during rolling.

In addition to measuring the thickness of the material, it is also important to avoid the excessive speeds during hot rolling. High rolling speeds can not only induce elastic deformation, but also cause breakdown and an unstable material flow. By slowing down, these effects can be reduced, thereby minimizing the damage and time associated with an excessive elastic deformation.

Finally, while cold rolling is usually less affected by elastic deformation, all earlier rolling operations have a major influence on the final products elasticity. Factors such as temperature, length of time, and the degree of deformation can all be adjusted to help minimize the extent of elastic deformation.

By understanding the common causes of elastic deformation, rolling mills can become more efficient and cost effective. Knowing when to control the rolling speed, monitor the thickness, and adjust the process parameters allows for a more controlled environment. By following these steps, rolling mills can increase their output and profit margins.