The repair of internal hole threads is a job that requires skill and patience. Proper repair not only extends the life
of the parts, but also saves the cost of replacing them with new ones. However, when performing repairs,
it is important to exercise caution, choose the appropriate repair method, and strictly follow the operating procedures.
Good maintenance and correct usage habits can greatly reduce the occurrence of thread damage. By mastering
these repair tips and precautions, you will be better able to deal with damaged internal hole threads and ensure
the proper operation and safe use of machinery and equipment.
Q: How can know if the inner hole thread needs to be repaired?
A: It can be judged by the following methods:
1. Visually inspect the threads for visible wear, deformation, or breakage.
2. Use a thread gauge to check whether the thread meets the standard.
3. Try to install the corresponding bolts and observe whether there is any looseness or difficulty in screwing in.
4. If the thread has been severely damaged, it may affect the function or safety of the part, and it needs to be repaired.
Q: What is the difference between internal thread repair and rework?
A: Internal hole thread repair usually refers to the repair or partial repair of damaged threads without changing
the original thread specifications. Remachining, on the other hand, is the complete removal of the original thread
and the remachining of a new thread, which may change the size of the thread. Repair is suitable for minor to
moderate damage, while rework may need to be considered when severe damage or specification changes
are required.
Q: What are the risks of repairing the internal thread by yourself?
A: There are indeed some risks associated with repairing the internal hole thread by yourself:
1. If not done properly, further damage to the threads or parts may occur.
2. The strength of the repaired thread may not be as good as the original thread.
3. If not properly repaired, it may affect the function or safety of the part.
4. For some delicate or critical parts, improper repair may lead to the degradation of the performance of the
entire equipment. Therefore, for important or delicate parts, it is advisable to seek the help of a professional
or consider replacing them with new ones.
