نتایج جستجو برای: seamless tubes

تعداد نتایج: 36399  

Journal: :Metals 2022

Large residual stress occurs during the quenching process of hot-rolled seamless steel tubes, which results in bending, cracking, and ellipticity exceeding standards seriously affects quality tubes. In addition, generation mechanism tubes is different from that plates due to characteristics annular section. this research, finite element simulation method was used study with cooling intensities....

Journal: :Applied mechanics 2023

Mass flow inequality in the initial stage of tube processing can lead to eccentricity and micro- nano-structural changes that affect residual stress texture development. In this study, macro- micro-texture development copper tubes drawn with a tilted die was investigated using three methods: synchrotron, neutron diffraction, electron backscatter positions maximum minimum wall thickness tubes. U...

ژورنال: علوم آب و خاک 2017

Drip irrigation is one of the new irrigation methods for optimum use of water resources and increase of irrigation efficiency. The emitters' clogging is the most important problem in these systems. The physical clogging is the most important factor in reducing the discharge and emission uniformity of emitters. The emitter position on the laterals and emitter spacing are the factors that affect ...

2013
Heinz Palkowski Sebastian Brück Thilo Pirling Adele Carradò

Cold drawing is widely applied in the industrial production of seamless tubes, employed for various mechanical applications. During pre-processing, deviations in tools and their adjustment lead to inhomogeneities in the geometry of the tubes and cause a gradient in residuals. In this paper a three dimensional finite element (3D-FE)-model is presented which was developed to calculate the change ...

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