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Article
A systematic study on three-roll continuous straightening process for LSAW pipes
Aiming at the low efficiency and unstable accuracy of the current mold-pressing straightening for LSAW pipes, a three-roll continuous straightening process is proposed in this study, which uses the roller stra...
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Article
Analysis of three-roller continuous and synchronous calibration process of straightness and ovality for large thin-walled pipes considering the weld
Large thin-walled pipes are commonly used in the field of oil and gas pipeline transmission. In general, the straightness and ovality of pipes cannot meet the industry standard. They are required to be calibra...
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Article
Deformation mechanism analysis of three-roller continuous and synchronous calibration process of straightness and roundness for LSAW pipes
The continuous and synchronous calibration process for straightness and roundness of LSAW (longitudinally submerged arc welding, LSAW) pipes with three rollers is a bidirectional reciprocating bending process....
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Article
Process analysis of biconvex tube hydroforming based on loading path optimization by response surface method
Biconvex tube is prone to problems such as severe wall thickness reduction or wrinkling in hydroforming due to the big diameter-thickness ratio and large expansion ratio. In this paper, the segmented dies were...
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Article
Open AccessAn Iterative Compensation Algorithm for Springback Control in Plane Deformation and Its Application
In order to solve the springback problem in sheet metal forming, the trial and error method is a widely used method in the factory, which is time-consuming and costly for its non-direction and non-quantitative...
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Article
Theoretical analysis and experimental investigations on the symmetrical three-roller setting round process
In this paper, a series of problems about the three-roller setting round process are studied. The theoretical analysis of increasing the roundness by three-roller bending is carried out, which shows that every...
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Article
Open AccessCuCr2O4@rGO Nanocomposites as High-Performance Cathode Catalyst for Rechargeable Lithium–Oxygen Batteries
Rechargeable lithium–oxygen batteries have been considered as a promising energy storage technology because of their ultra-high theoretical energy densities which are comparable to gasoline. In order to improv...
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Article
Development of a cold stam** process for forming single-welded elbows
This paper presents a cold stam** process for single-welded elbows, which has advantages of no heating, no adjusting roundness and single weld. This process is particularly suitable for forming large diamete...
