scholarly journals Numerical Analysis of Hot Polymer-Coated Steel Pipeline Joints in Bending

2018 ◽  
Author(s):  
Finian McCann ◽  
Guido Ridolfi ◽  
Erwan Karjadi ◽  
Harm Demmink ◽  
Helen Boyd
Keyword(s):  
Numerical Analysis ◽  
Coated Steel ◽  
Steel Pipeline

Estimation of Frictional Coefficient between Punch and Billet at Back-Stroke in Backward Can Extrusion Test of Steel

2018 ◽  
Vol 767 ◽  
pp. 248-255
Author(s):  
Kazuhito Asai ◽  
Kazuhiko Kitamura ◽  
Keisuke Goto ◽  
Nobukazu Hayashi
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Numerical Analysis ◽  
Frictional Coefficient ◽  
Expansion Ratio ◽  
Coated Steel ◽  
Forward Stroke ◽  
High Pressure High Temperature ◽  
The Coefficient Of Friction ◽  
Surface Expansion

A backward can extrusion test provides severe tribological conditions because high pressure, high temperature, and large surface expansion ratio affect the lubricant. During the forward stroke these conditions intensify with increasing cup depth of the extruded workpiece; additionally, the back-stroke force during retraction of the punch rises to a significant level under a poor-lubricated condition. This study estimates the coefficient of friction μp between punch and workpiece during the back-stroke by combining experiments using conventional soap-phosphate coated steel and numerical analysis by FEM. The values of μp were estimated to be 0.09 and 0.03 in case of small and large workpiece depth, respectively. Friction decreased with elevating temperature.

scholarly journals Numerical modelling of hot polymer-coated steel pipeline joints in bending

2018 ◽  
Vol 160 ◽  
pp. 354-367 ◽  
Author(s):  
Finian McCann ◽  
Guido Ridolfi ◽  
Erwan Karjadi ◽  
Harm Demmink ◽  
Helen Boyd
Keyword(s):  
Numerical Modelling ◽  
Coated Steel ◽  
Steel Pipeline
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