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topic 8536

Achieving Superior Surface Finish in Cylinderbore Tubes


(2001)

We are the leading manufacturer of cold drawn welded (cdw)/DOM tubings in India and exporting worldwide.

We face lot of problems in achieving the surface finish of the cylinderbore tubes manufactured for automotive shock absorber application.With lot of inhouse research work finally we could now able to constantly achieve 0.5 Ra max in micro meter, but to supply tubes to some of the customers we need to achieve a finish of 3RMaxJ which currently we are unable to achieve.During our literature survey we have found that the type of acid pickling can lead to the solution what we are looking for.

The basic idea is to minimise the peak and valley creation due to pickling process.

Unfortunately we do not have a bright annealing facility for tubes hence we are forced with acid pickling process.

Can anyone help us in providing the solution?

We manufacture tubes made of SAE1010,1020,1026&ST-52-3; steel grades.

Thanks for your time ...

C.K.Sekar
- Avadi, Chennai, Tamil Nadu, India



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