In recent years, heat treatment technologies represented by supersonic spraying, plasma spraying, flame spraying, and arc spraying have gradually become common in steel enterprises. More and more roller components, including cold rolling furnace rollers, quenching furnace guide rollers, sinking rollers, stabilizing rollers, tension rollers, pinch rollers, and other types of rollers, have significantly improved their service life according to heat treatment technology. This not only reduces production and manufacturing costs, but also greatly improves the quality of hot-rolled steel strips.
The sinking roller is a part of the sinking roller component, suspended by roller arms in a high carbon steel structure. The mechanical transmission devices at both ends of the sinking roller frame can move the sinking rollers in and out to meet the vertical alignment of hot-rolled strip steel. The total stroke of three rollers and six arms consists of sinking rollers, calibration rollers, stabilizing rollers, arms, shaft sleeves, sleeve specifications, etc.
In addition to avoiding deviation and ensuring good surface roughness reliability, cold-rolled process rolls should also have sufficient wear resistance during use. After traditional chrome plating treatment, the strength of the processing roller surface is generally HV30-60. The wear resistance of the sinking roller is weak, and after a certain period of use, the surface roughness of the sinking roller surface will significantly decrease. On the contrary, arc spraying coating can effectively adopt corresponding coating materials and coating processes for different working conditions standards, further improving the wear resistance of the roller surface, thereby increasing the application life of the roller, reducing maintenance costs, and improving work efficiency. Heat treatment technology is increasingly used for many processing rollers exposed to ambient air on cold wire mesh, such as tension rollers, pinch rollers, correction device rollers, conversion rollers, etc.
In the process of contemporary economic development, the use of heat treatment technology and metal green repair and remanufacturing technology for roller components such as smelters, steel mills, and rolling mills not only has low cost, but also effectively improves the service life of rollers, saves alloy components, enhances the production capacity and product quality of extruders, which is an efficient engineering and economic strategy. Among them, spray welding technology has been widely used in various steel industries around the world as a practical and feasible way to strengthen the surface of the roller in hot rolling. Stable quality, stable and reliable products. In addition to the production and manufacturing of new rollers, it is also used for the restoration of damaged rollers. Heat treatment technology is a new type of surface strengthening technology in China in recent years, and its application on the surface of roller components in the steel metallurgy industry is becoming increasingly common. It has a necessary effect in improving product quality and increasing service life.
The furnace roller of the roller bottom heat treatment furnace 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 an electric motor shaft, and an air outlet is set on the conical tube. The placement of the electric motor shaft and the short end of the conical tube, as well as the placement of the majority of the conical tube and the roller body, all adopt transitional fit.