What are the repair methods for BL14-71-5.5KW reducer output shaft deformation

After the output shaft of BL14-71-5.5KW reducer is deformed, different repair methods can be selected according to the degree of deformation and specific situation. The following are some common repair methods:

Pressure straightening: Remove the output shaft from the reducer, and also remove the bearings, gears, and other components. Use V-shaped blocks to support both ends of the shaft on the press, measure the bending amount with a dial gauge, and gradually apply pressure for calibration. After straightening, aging treatment is required to eliminate stress, such as stress relief tempering at 200 ℃.

Hot spot straightening: For some slightly deformed materials that allow for shaft alignment, the hot spot straightening method can be used. By locally heating the bent part of the shaft and utilizing the thermal expansion and contraction characteristics of the material, the shaft is restored to its original shape after cooling. After hot spot straightening, stress relief tempering treatment is also required.

Electric brush plating or thermal spraying: If the output shaft neck is worn and the deformation is small (≤ 0.1mm), electric brush plating or thermal spraying technology can be used. Electric brush plating is the process of depositing a layer of metal on the surface of the shaft neck using electrochemical principles, while thermal spraying is the process of heating the metal powder to a molten or semi molten state, spraying it onto the surface of the shaft neck to thicken it, and then grinding it to the tolerance range.

Welding repair: If the bending deformation of the shaft is too large to be eliminated by machining the shaft neck and parts on the shaft, preliminary straightening can be carried out on the press first, and then an electric welding machine can be used to evenly weld a layer on the surface of the bent part. Then, the lathe can be used to find the center based on the outer circle of the rotor, and the required size can be machined and checked with a dial gauge.

Embedding method: When the journal wear is significant or the deformation is severe, the journal can be turned to the appropriate size and then fitted with an interference fit. The outer circle of the sleeve can then be machined to meet the size requirements of the output shaft.

Carbon nano polymer material repair technology: Check the deformation and wear of the reducer shaft, and measure the size. Use oxygen acetylene to clean the surface oil stains on the deformed and worn parts until there are no sparks or splashes. Rough treat the area to increase the bonding area of the material. Clean the treated area with anhydrous ethanol and air dry. Mix the carbon nanopolymer material proportionally until it is uniform and color free, and then apply the mixed material evenly to the area to be repaired. Machine the material to size after solidification.