A study of cold roll forming technology and peak strain behavior of asymmetric corrugated channels

Xu, Chuntian; Wei, Yifan; Pan, Tuo; Chen, JianChao

doi:10.1007/s00170-021-08206-9

Cited by 3 publications

(4 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The stress strain behavior of ACC is very complex under roll force [1], which leads to the types of the defects and their influencing factors very complicated, correspondingly. Here the simulations are performed for forming variables only including the friction coefficient, inter-station distance, bending angle, roll gap and number of forming channels.…”

Section: Forming Parametersmentioning

confidence: 99%

“…This indicates that increasing the forming angle of the first pass of groups 2, 3 and 4 can effectively ameliorate the bowing phenomenon. However, the maximum peak strain of the ACC becomes large with the bending angle, which enlarges the risk of profile fracture [1].…”

Section: Friction Coefficientmentioning

confidence: 99%

“…The asymmetric corrugated channels (ACC) under study, as this type of product, are mainly for fabricating the aluminum sleeves. Compared with traditional competitive paper sleeves used for the supports of such industrial roll products as aluminum coils, the aluminum ones have the advantages of low cost, high load capacity, low collapse, recyclability, and environmental protection and so on [1]. And thus, they can also be used as the supports of aluminum coils instead of paper sleeves and have wider promotion value and market development prospect, see Fig.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A study of transverse bowing defect in cold roll-forming asymmetric corrugated channels

Chen²,

Wei³

et al. 2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The transverse bowing greatly affects accuracy of the roll forming asymmetric corrugated channels (ACC). In order to control this defect, the paper first elucidates its mechanism of the production. Then the transverse bowing is explored by finite element method (FEM) using ABAQUS 2016 software and the effects of the forming parameters are analyzed. Also, a linear regression model is built using Minitab 19 software to evaluate their effects, of which standard values are measured by Pareto chart. It is observed that the number of forming channels has the greatest effect, followed by the roll gas and bending angle, and the friction coefficient has the least. Finally, to decrease the transverse bowing defect (TBD), the dominant forming parameters are optimized according to the evaluation results and the operating conditions. And the results of simulation and optimization are verified by experiments, respectively. This research shows that the TBD can be greatly controlled by the optimization of three dominant forming parameters including the roll gap, bending angle and inter-station distance for given ACC.

show abstract

Section: Forming Parametersmentioning

confidence: 99%

Section: Friction Coefficientmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A study of transverse bowing defect in cold roll-forming asymmetric corrugated channels

Chen²,

Wei³

et al. 2023

Int J Adv Manuf Technol

View full text Add to dashboard Cite

show abstract

“…The investigation of the cold roll forming process mainly focuses on the production of cold-formed components with symmetrical cross sections [12]. These include items like hollow square tubes [13], U-shaped steels [14,15], C-beams [16,17], V-beams [18], W-section plates [19], hat-shaped plates [20,21], and corrugated plates [22,23]. Safdarian et al [24] studied the formation process of square tubes by cold roll forming and found that the longitudinal strain of the strip edge was not substantially affected by the friction between the strip and the roll or by the rolling speed.…”

Section: Introductionmentioning

confidence: 99%

Research on Cold Roll Forming Process of Strips for Truss Rods for Space Construction

Yang,

Han,

2023

Materials

View full text Add to dashboard Cite

In this paper, a new technology for on-orbit cold forming of space truss rods is proposed. For the cold roll forming process of asymmetric cross sections of thin strips, the effects of roll gap and roll spacing on the forming of asymmetric cross sections of strips were investigated using ABAQUS simulation + experiments. The study shows the following. When forming a strip with a specific asymmetric cross section, the stresses are mainly concentrated in corners 2/4/6, with the largest strain value in corner 2. With increasing forming passes, when the roll gap is 0.3 mm, the maximum equivalent strain values are 0.09, 0.24, 0.64 sequentially. Roll gaps of 0.4 mm and 0.5 mm equivalent strain change amplitude are relatively similar, and their maximum equivalent strain values are approximately 0.07,0.15, 0.44. From the analysis of the stress–strain history of the characteristic nodes in corners 2/4/6, it can be seen that the stress and strain changes in the deformation process mainly occur at the moment of interaction between the upper and lower rollers, where the stress type of node 55786 shows two tensile types and one compressive type, the stress type of nodes 48594 and 15928 shows two compressive and one tensile type, and the strain of the three nodes is in accordance with the characteristics of plane strain. When the roll gap is about 0.4 mm, the forming of the strip is relatively good. With increased roll spacing, the strip in the longitudinal stress peak through the rollers shows a small incremental trend, but the peak stresses are 380 Mpa or so. When the roll spacing is 120 mm, the longitudinal strain fluctuation of the strip is the most serious, followed by the roll spacing at 100 mm, and the minimum at 140 mm. Combined with the fluctuation in strip edges under different roll spacings, manufacturing cost and volume and other factors, a roll spacing of 100 mm is more reasonable. It is experimentally verified that when the roll gap is 0.4 mm and the roll spacing is 100 mm, the strip is successfully prepared in accordance with the cross-section requirements. When the rolling gap is 0.3 mm, due to stress–strain concentration, the strip is prone to edge waves in forming. The top of corner 2 of the flange triangular region is susceptible to intermittent tear defects, and the crack extension mechanism is mainly based on the cleavage fracture + ductile fracture.

show abstract

Cold Roll Forming Process Design for Complex Stainless-Steel Section Based on COPRA and Orthogonal Experiment

Wang

Liu

Li³

et al. 2022

Materials

View full text Add to dashboard Cite

Cold roll forming can fabricate products with complex profiles, and its parameter optimization can achieve high quality and improved precision of products. In this paper, taking the side shield as a typical product, the cold roll forming of a complex section of stainless steel SUS301L-ST is analyzed, establishing a 3D finite element model by using the professional roll forming software COPRA. We propose a floating roll device for complex sections with asymmetry and large depth. We use an orthogonal experiment to obtain the inter-distance between rolls, friction coefficients, the diameter increments, and line velocities to investigate the effects on the maximum longitudinal strain of the edge. Results show that the diameter increment has the greatest influence on the maximum strain, and its increases can reduce the strain. The inter-distance value needs a suitable range. A small value is not conducive to the release of elastic deformation, while a large value will cause unexpected displacement and increase the cost. The friction coefficient increases; although it helps to reduce the strain, it will cause scratches and other defects on the stainless steel. The increase in velocity increases the strain. We derive the optimal parameters for the complex section, providing a theoretical basis for practical production.

show abstract

A study of cold roll forming technology and peak strain behavior of asymmetric corrugated channels

Cited by 3 publications

References 15 publications

A study of transverse bowing defect in cold roll-forming asymmetric corrugated channels

A study of transverse bowing defect in cold roll-forming asymmetric corrugated channels

Research on Cold Roll Forming Process of Strips for Truss Rods for Space Construction

Cold Roll Forming Process Design for Complex Stainless-Steel Section Based on COPRA and Orthogonal Experiment

Contact Info

Product

Resources

About