In the process of using industrial machinery to process sprocket gears, accessories that are easy to wear. For such sprockets, not all of them need to be scrapped and cannot be used. We can repair them through some methods to extend the service life of the gears. Enterprises reduce their investment in production costs.However, the repair process needs to be repaired by different techniques according to the damage of the gear.The tooth surface does not exceed the wear limit, but the worn sprocket with small peeling and pitting in some places can be smoothed with oilstone and continue to use; but if the wear exceeds the limit, the peeling and pitting distribution area should be replaced as soon as possible Or repair.The editor below details several common repair methods for gear wear, and I hope it will be helpful to you.

    1. Inlay method For gears with low load and low speed, when individual teeth are broken, the inlay method can be used to repair.When repairing, it is necessary to machine a dovetail groove at the root of the bad tooth, insert the tooth blank into it with a certain degree of tightness, and fasten the tooth blank by welding or stabilizing nails, and then mill a new tooth shape.

    2. In the process of reversing method, if the sprocket tooth thickness has not exceeded the limit of single-sided wear gear teeth, if the structure permits, the gear can be turned over 180° to use the side that has not been worn.For a pair of gears, it can be turned over and used, or the matched gears can be replaced with new ones to ensure the normal meshing of the gears.And some asymmetric single-sided wear gears need to be turned over and used after restructuring.

    3. Ring gear replacement method. The worn sprocket gear is first subjected to annealing process, all gear teeth are removed by a lathe, and then the ring gear is pressed to form a new gear.In order to prevent loosening, the stabilizing nails can be installed by spot welding or drilling along the matching circle.

    4. The hot forging method heats the worn gear to 800-900°C and puts it in a gear mold for pressure. After plastic deformation, the metal of other parts of the sprocket gear is squeezed to the wear surface of the tooth. Then heat treatment after trimming to repair.

    5. Welding repair method: Use a fine grinding wheel to grind the teeth of the worn and cracked parts of the sprocket gear to remove the incomplete fatigue layer, and then repair by surfacing.When welding repair, the gear should be immersed in water and annealed first. For steel carburized gears, 20 or 45 steel wire gas welding repairs can be used, or low-hydrogen electrode welding can be used. After welding repairs, they can be repaired by machining or manual template. Tooth shape, then re-heat treatment and use whetstone to refine or use abrasive to grind.