Necessary Points about Roll Alignment

1. Necessary Points about Roll Alignment A cooling bed is a vital component in a rolling mill that enables hot rolled and cast steel products to cool down after leaving the hot mill. The primary objective is to achieve uniform cooling of the entire bar to prevent the development of stresses, which can lead to product defects. Uneven cooling can occur if a part of the bar remains in contact with the metal supports, resulting in differential cooling rates. You can visit the professional team at GMB Heavy Industries to get more information about roll alignment. The walking beam cooling bed is the most commonly used and comprises both moving and stationary skids. These skids lift, traverse, and lower the product multiple times, ensuring that the bar comes into contact with different areas of the bed continuously. This process allows for uniform cooling throughout the bar, and it eventually reaches the end of the bed, where it is placed on roller tables. Walking beam cooling beds have a saw-tooth pattern and are also known as rake-type cooling beds For cooling billets, walking beam turn-over cooling beds are used to prevent distortion of the billet’s shape during the cooling process. This type of cooling bed continually rotates the billet, ensuring that it touches different areas of the bed continuously. Cooling beds used for blooms and plates do not have a raked pattern but may use a chain transfer as the traversing method. The size of the cooling bed is determined based on the required cooling cycle time to ensure that the product cools uniformly. Proper cooling bed design and operation are crucial in minimizing product defects and ensuring the efficient operation of rolling mills. Overall, the cooling bed is a critical component of the rolling mill process, and its proper design and operation are essential for producing high-quality steel products. The Different Types In the steel production process, cooling beds are essential for facilitating the cooling of hot rolled and cast steel products. Two primary types of cooling beds are commonly used: The first type is the automatic rake-type cooling bed, which moves the material by one pitch for each rake movement. These cooling beds come with either a twin-channel bar delivery system or a run-in table that features apron-type diverters. Furthermore, the cooling bed is designed with a bar alignment feature to ensure that the bars are correctly positioned during the cooling process. The second type is the turn-over type cooling bed, which is specifically used for alloy steel. This cooling bed rotates the bars by one revolution for each pitch movement of the rake, resulting in superior straightness of the material and improved metallurgical properties. This type of cooling bed ensures that the bars are uniformly cooled, which is essential for producing high-quality steel products. Proper selection of the appropriate cooling bed type is critical in the steel production process, as it can significantly impact the quality of the final product. Cooling beds are an indispensable component of steel production, and their efficient design and operation are essential for ensuring the production of high-quality steel products.

2. Source: https://gmbindustries.com/necessary-points-about-roll-alignment/