The stabilizing roller of the roller bottom heat treatment equipment includes a roller body, and both sides of the roller body are connected to the majority of a conical tube. The short ends of the conical tube of the conical tube are connected to a motor shaft, and an air outlet is set on the conical tube. The insertion of the motor shaft and the short end of the conical tube, as well as the insertion of the majority of the conical tube and the roller body, all adopt transitional fit,
Stable rollers for heat treatment equipment
The length of the motor shaft inserted into the small head of the cone tube is 1.2-1.4 times the diameter of the motor shaft, and the length of most of the cone tube inserted into the roller body is 0.25-0.3 times the diameter of most of the cone tube, and the length of most of the cone tube inserted into the roller body is not less than 80mm. The electric welding between the roller body and the cone tube, as well as between the cone tube and the motor shaft, are all connected by electric welding. The present invention can achieve overall effective service of various parts of the furnace roller
Roller bottom heat treatment equipment is an industrial electric furnace in the casting industry that can carry out continuous heat treatment processes (heat treatment, quenching, quenching, etc.) after cold rolling of plates. The furnace rollers are the key equipment among them. Due to the long-term and continuous support of heavy carbon steel plates at 680-1200 ℃ for the stabilizing roller, and the movement of thick steel plates in the furnace through the rotation of the furnace roller, it is stipulated that the furnace roller should have high temperature oxidation resistance, sustained high temperature compressive strength, and wear resistance. It is also stipulated that the overall assembly of the stabilizing roller should be effective and the connection should be reliable. Figure 2a and Figure 2b are the plan views of the connection between the roller body and the cone tube in the existing technology. The connection method of inserting the cone tube 2 into the roller body 3 is selected, and Figure 2b uses the connection method of inserting the roller body 3 into the cone tube 2. However, regardless of the method, the installation of furnace rollers in existing technology adopts gap fitting and steel bar lap welding connection.
Wear resistant steel furnace bottom roller
Due to the small welding scope and low weldability of the weld seam, gaps may appear at the joint where the gap matches with each other, which requires the welding to bear stress and easily leads to fatigue and cracking. In addition, the exhaust port on the existing cone tube has high randomness, mostly located in the middle of the cone tube, and the insulation material inside the cone tube is stacked irregularly. As a result, the distance between the heat flow inside the furnace roller and the rolling bearing supporting the furnace roller is short, and the insulation effect is poor, leading to poor lubrication effect of the rolling bearing position, making the rolling bearing easy to be damaged due to temperature rise. Due to the development of technology, existing parts such as the roller body and cone tube can basically meet various working conditions when used alone. However, due to the unreasonable installation of each part in the above design principles, the entire furnace roller is invalidated prematurely, which cannot be consistent with the service life of the roller body, cone tube and other parts, or the rolling bearings need to be stopped and replaced due to damage, which endangers production and enterprise efficiency.