Soft face gear and partial hard face gear repair technology

Gear failure mainly manifests as broken teeth, pitting, wear, and surface metal rheology. In actual industrial production, gear failure will directly affect the normal production of the enterprise, and the gears are broken, pitting, and worn, and the gears can be put back into production through proper repair.
In the actual repair, the handle welding, argon arc welding, gas shield welding can be used for the surfacing repair of the gears, and the welding materials of these surfacing methods are very rich in source, when the weldability analysis according to the material of the broken tooth base material Determine the type of welding consumables and use. First of all, to ensure a good metallurgical bond of the weld joint, and to have high resistance to breakage and impact, the core of the rack must have good toughness, but also to ensure that the hardness of the tooth surface is similar to the original tooth surface.
At the beginning of construction, carefully check the shape of the fracture, study the shape and location of the opening, use a high-power grinder to grind the broken part of the gear, and enlarge the depth by 10mm, grind a reasonable groove, and then inspect the flaw to confirm that there is no crack. The welding can be carried out at the beginning of the surfacing, and the surfacing welding should be started when the temperature is controlled to about 250 degrees by the temperature-controlled infrared heating instrument. The cold welding should be avoided during the surfacing, and the surfacing welding is completed according to the established surfacing process. , need to adjust the hardness of the tooth surface. After the surfacing is finished, it must be heated to 300 degrees and then kept cold for 2 hours to prevent cold cracks. (It should be noted that some low-alloy steels have great cold cracking properties, and attention can be taken to reduce cracking while using crack resistance. Good dissimilar steel electrode, pay attention to the direction when grinding).
When the rack is grinded, according to the tooth tip distance of the adjacent teeth, the height of the top of the tooth, and the width of the top of the tooth, the tooth is detected by the tooth thickness until the tooth shape after the repair conforms to the tooth profile data of the original tooth, and the repaired gear is installed after the tooth is installed. It can be put into use after careful grinding.