Innovative Solutions for the Baosteel Hot Rolling Factory: Overcoming the Challenges of the CNC WS600/450-16×5000 Shredder
The Baosteel Hot Rolling Factory is a leading manufacturer of hot rolling equipment, and their CNC WS600/450-16×5000 shredder is a vital component in the production of high-quality steel products. However, this shredder has been facing some challenges, particularly with regard to its start-up torque and transmission step. In this blog post, we will delve into the reasons behind these challenges and propose innovative solutions to overcome them.
Insufficient Start-up Torque
The start-up torque of the bedside box is a critical factor in ensuring smooth operation of the shredder. Unfortunately, the Baosteel hot rolling factory’s CNC WS600/450-16×5000 shredder’s original design has an insufficient start-up torque, leading to slippage of the belt when starting the engine at a current of 208A. This is due to the design of the bed, which is not optimized for the high diameter hot wires used in the production of high-quality steel products.
To rectify this issue, it is essential to analyze the constraints of the roller when it is static. By using the formulas provided below, we can see that the gravity of the roller is mainly borne by the lower tiles. This concentration of force torque on the rubbing distance of the lower shingle is a factor that causes an insufficient start-up torque of the bedside box.
W = 9.81 x 10^4 N (gravity)
F_B = W / COS6.5° = 1.04 W, N
F_s = w • tgl6.5° = 0.296w, N
We can also see that the friction force at the lower tiles is μ1 and the side tiles are μ2. The formula for the friction force at the lower tiles is:
F_B = 1.04 Wμ1, N
The friction force at the side tiles is:
F_s = 0.296 Wμ2, N
The total force of friction is FD:
FD = (1.04 μ1 + 0.296 μ2)W, N
The arc radius of the support R = 0.315 m, so the distance from the pair of motor force t from the rotation of the roller is:
T = FD • R = 0.315 (1.04 μ1 + 0.296 μ2)W, N • M
Inadequate Transmission Step
Another challenge faced by the Baosteel hot rolling factory’s CNC WS600/450-16×5000 shredder is the transmission step of the bedside box. The original design of the bed uses a secondary transmission structure, with a first stage transmission belt and a second stage transmission chain. However, the diameter values of the transmission wheels in each stage vary significantly, leading to a belt’s liquidation angle and part of the torque being lost. This results in an insufficient torque transmitted to the disc, which is another factor that contributes to the start-up torque of the bedside box.
To overcome this challenge, designs with a three-stage belt transmission structure can be adopted, such as those used in Waldrich rolling crushers. This design allows for a larger transmission ratio, resulting in a greater distance transmitted to the disc and a more efficient start-up torque.
Improving the Repair
To further improve the performance of the Baosteel hot rolling factory’s CNC WS600/450-16×5000 shredder, it is essential to focus on enhancing the start-up torque and transmission step. This can be achieved by:
- Optimizing the design of the bed to reduce the start-up torque required
- Adopting a more efficient transmission structure, such as a three-stage belt transmission system
- Improving the oil outlet method of the original support cart to reduce the formation of a thick oil film on the surface of the tiles
By implementing these innovative solutions, the Baosteel hot rolling factory can optimize the performance of the CNC WS600/450-16×5000 shredder and ensure smooth operation in the production of high-quality steel products.
