Technical requirements and standards for major overhauls of screw air compressors
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Question: Technical requirements and acceptance criteria for major overhauls of screw air compressors.
Question: Can such screw damage be repaired? Repair process? What is the impact on efficiency after the repair?
It should be possible, but dynamic balancing is required
Regarding the “technical requirements and acceptance criteria for major overhauls of screw air compressors”. You can determine it yourself based on the relevant data in the compressor’s manual. This screw can be repaired, but it may be costly. The strength of ordinary repair screws may decrease, and the surface hardness may not be sufficient.
The surface is sprayed with metal of the same material, and then polished for dynamic balance. But as shown in the picture, the wear is quite severe; the cost is likely to be high!
The wear is quite severe; laser repair is recommended.
Judging from its tooth pattern, this cutter head is of an old design, and the condition is quite poor; it’s likely not cost-effective to repair it