| Autor: |
Pavlov, D.A., Bogatov, Aleksandr, Pavlova, E.A. |
| Zdroj: |
Diffusion and Defect Data Part B: Solid State Phenomena; October 2018, Vol. 284 Issue: 1 p557-562, 6p |
| Abstrakt: |
The paper presents the results of the experimental study of the longitudinal and transverse wall thickness variation at the ends of a oil-well tubing during reduction procedure. It is established that the greatest "contribution" to wall thickness data spread is made by the pipe facets, which is caused by the influence of the reduction regimes and the rolls calibration due to the metal flow into the tapers of groove. In the course of work, recommendations were also made that, in order to reduce the wall thickness variation of pipes, it is necessary to develop the calibration ensuring the decreasing of the intensity of metal flow into the tapers of groove, as well as decrease the reduction at the mill stands, and increase the coefficient of kinematic tension between the stands of the stretch-reducing mill. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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