The straightening machine is the core equipment in continuous casting equipment, which is used to feed the ingot guide rod into the crystallizer, pull the billet out of the crystallizer, and achieve straightening of completely solidified or liquid phase billets to ensure that the straightening process does not affect the quality of the billet. The motor reduces speed and converts output torque through a gearbox, which drives the straightening roller to move the ingot bar and casting billet. In the process of continuous casting production, once the straightening machine malfunctions, it directly affects the smooth progress of production and causes interruption of continuous casting production. The damage to the gearbox is one of the main factors affecting the service life of the straightening machine. The main factors causing damage to gearboxes are insufficient fatigue strength, insufficient thermal power, and inadequate lubrication. To ensure the smooth operation of the continuous casting line and improve production efficiency, our company has developed DLLJJ, DLLJJL, and DLLJJT series of specialized gearboxes for straightening machines.
This type of gearbox has a compact structure, small volume, light weight, high load-bearing capacity, low noise and vibration, and operates smoothly. The box adopts a vertical sectional structure, which is easy to maintain and manufacture, and has a beautiful appearance; The box is made of welded box, annealed after welding, and subjected to aging treatment after rough machining. The stress of the box is completely eliminated, and it will not deform after long-term use. There is a cooling water chamber inside the box, which uses industrial water circulation cooling to greatly improve the cooling effect and reduce the working temperature of the gearbox. Multiple innovative technologies have been adopted to improve the reliability and lifespan of the entire machine, increase torque transmission, and improve lubrication.
The gear material is made of high-quality low-carbon alloy steel, carburizing fire, with a tooth surface hardness of HRC57+4, and the gear adopts grinding technology.
