Repairing process for main drive gear of producing oxygen air compressor

Abstract

The invention discloses a repair technique of a main transmission gear of an oxygen making air compressor, comprising the following technique steps: 1) the residual service life of a damaged main transmission gear to be repaired is evaluated; 2) a 40CrMo series steel bolts with high strength are embedded at the positions where the local gears are broken; 3) the original design dimension and shape of the main transmission gear are manufactured or repaired by a laser directional light prototype; 4) the gear surface and the gear shape are repaired by a contour machining, thus reaching the technical requirement of original design tolerance and geometric tolerance of the gear surface. The invention has the advantages and effective effects that the damaged main transmission gear is fully repaired by the technique method and the oxygen making air compressor gear of the invention; furthermore, the performance of the repaired main transmission gear reaches the original design technical requirement, the wearability and stress corrosion resistance are improved, and the rotation in the application operation is ensured stable and reliable; meanwhile, the service life index of the repaired main transmission gear complies with or exceeds the original design requirement.

Description

technical field [0001] The invention belongs to a gear repair process, in particular to a kind of oxygen-making air compressor which makes the service life and performance of the repaired main transmission gear meet the technical requirements of the original design, and improves the wear resistance and stress corrosion resistance. The repair process of the main drive gear. Background technique [0002] At present, the H-type air compressor is the main equipment in the air separation and oxygen production plant. During its long-term operation, due to working conditions and other reasons, the main transmission gear of the H-type air compressor bears the high rotation load of more than 10,000 revolutions per minute of the rotor, resulting in stress corrosion pitting, and even partial fracture and loss of blocks, resulting in Hitting other tooth surfaces will cause more and larger broken teeth or tooth surface crush damage, causing the unit to stop production. For the main tra...

AI Technical Summary

Problems solved by technology

During its long-term operation, due to working conditions and other reasons, the main transmission gear of the H-type air compressor bears the high rotation load of more than 10,000 revolutions per minute of the rotor, resulting in stress corrosion pitting, and even partial fracture and loss of blocks, resulting in Impact on other tooth surfaces, more and larger broken teeth or tooth surface crush damage, causing the unit to stop production

For the main transmission gear of the damaged H-type air compressor, the traditional maintenance method is to replace the main transmission gear of the compressor and replace the two-pole rotor of the compressor. The maintenance time is long and the cost is high.